Proceedings of the United States National Museum, Volume 22Smithsonian Institution Press, 1900 - Anthropology |
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Common terms and phrases
abdomen Aguadilla antennæ apex Aphycus Basal line base Bill black blackish brown California Carapace Carneades Carpender cell Claviform Conch Conrad costa Dalman darker Docophorus dusky Encyrtus Family female female.-DALLA TORRE flagellum Forstins fuscous genus Goree Bay gray Ground color Habitat.-Europe Hist Host.-Rhynch Howard inches inner Insects Affecting Domestic interspaces Island Kellogg and Chapman line geminate Linnæus lunule male Mallophaga Mallophaga from Birds marginal vein marked maxillipeds MAYR median shade mesonotum Milne-Edwards narrow Nirmus Nitzsch oblique ocelli Orbicular ordinary spots Osborn Osorio outcurved outer pale paler patagia postmarginal vein powdery Proc Ratzeburg Reniform scutellum Secondaries septa shell smoky species specimens stigmal vein Subterminal line terminal space Thomas Island thorax tibiæ Transverse anterior line Transverse posterior line Type.-Cat U. S. Nat U. S. National Museum Ulrich Unio Utuado vestiture Vieques Island West African whitish wings yellow yellowish Zool
Popular passages
Page 614 - Shell elliptical, thin, inflated, often slightly winged posteriorly ; beak sculpture consisting of rather numerous more or less parallel ridges, usually somewhat doubly looped, and becoming slightly nodulous on the loops ; surface generally smooth, shining; hinge edentulous, reduced to a mere line, regularly curved ; muscle scars rather faint ; nacre dull.
Page 593 - ... with very faint, irregular, often broken and slightly nodulous ridges which show a tendency to fall into two loops, the posterior often open behind; epidermis dull, brownish, silky or clothlike, rarely rayed, rays indistinct; female shell but slightly inflated in the post-basal region, commonly having a shallow furrow or a flattened area at the posterior end ; pseudocardinals solid, stumpy; laterals short, club-shaped; anterior and posterior cicatrices deep and distinct; nacre bluish white or...
Page 760 - ... secondary lateral below the large one in the right valve ; cavity of the beaks deep and compressed : dorsal scars under the hinge plate ; male and female shells alike. Animal having the inner gills the larger, generally free from the abdominal sac the greater part or all of their length ; marsupium occupying all four of the gills throughout, the whole smooth and pad-like.
Page 173 - Bay, has 72 species, of which 28 are restricted to it. This fauna shows an intimate relationship with that of the Galena of Minnesota, Iowa, and Wisconsin. Fifty-seven per cent of the species of Baffin Land also occur in the Galena of the regions just mentioned. The Trenton fauna of Baffin Land shows that the corals, brachiopods, gastropods, and trilobites have wide distribution, and are therefore less sensitive to differing habitats apt to occur in widely separated regions. On the other hand, the...
Page 510 - ... sculptured ; laterals double in each valve, the inner in the right valve smaller. Animal generally having the inner gill united to the abdominal sac ; female with a heavy flap of...
Page 177 - CONRAD, TA Observations on the Eocene formation of the United States, with descriptions of species of Shells, etc., occurring in it. Amer. Jour. Sci., 2nd ser., vol. i, 1846, pp.
Page 520 - GENUS LAMPSILIS RAFINESQUE, 1820. "Shell oval to elliptical, smooth or slightly concentrically sculptured, usually without a posterior ridge ; epidermis generally smooth and shining, often brilliantly rayed ; beak sculpture, for the most part, consisting of fine, parallel ridges, which show a tendency to fall into an anterior and...
Page 520 - ... Shell oval to elliptical, smooth or slightly concentrically sculptured, usually without a posterior ridge ; epidermis generally smooth and shining, often brilliantly rayed ; beak sculpture, for the most part, consisting of fine, parallel ridges, which show a tendency to fall into an anterior and a posterior loop ; hinge with one or two pseudocardinals and one lateral in the right valve, and two pseudocardinals and two laterals in the left ; female shell having a moderate and gradual inflation...
Page 656 - ' Shell elliptic rhomboid, compressed ; beaks low, sculpture consisting of strong bars ; one pseudocardinal in the right valve and two in the left, the hinder somewhat A-shaped, cutting off the hinge plate in the right valve ; laterals generally imperfect. "Animal with the gills semicircular below, inner the larger, filling nearly the whole length from the abdominal sac ; marsupium thick, pad-like, filling the outer gills ; mantle strongly attached at pallial line ; branchial opening papillose ;...
Page 598 - Shell inflated, decidedly truncate at the posterior slope; surface slightly concentrically sculptured; posterior ridge sharp and well defined; epidermis shining, sometimes wrinkled, looped and painted with a beautiful pattern of broken or arrow-marked rays; area of the beaks flattened off in the direction of the axis of the shell, but not compressed ; beak sculpture delicate...