﻿450 i.i;r,uMi\AiA 



ward, sculptured with uiidulatini;. somewhat duuhK-looped 

 ridges; surface, conceutrically sculptured; epidermis brilliant. 

 bro\vuish-}ello\\ at the border, Hghter and grayish at the 

 bejiks; hinge witii a single obtuse, elongated tooth in each 

 valve; nacre smooth, brilliant, bluish-white. 



Length 63, height 43. diam. 24 mm. 



Lake Antioch, Syria. 

 Pscudodon chantrci Locard, Arch. Mus. L^on. \\\. 1S83, j). 



254. ])1. \i.\ bis, figs. 4-7. 

 Lcgumhiaia locardi Simpson, Syn., 1900, p. 653. 



I have never seen this shell, "tnit its semi-transparent texture, 

 its short, nearly evenly elliptical form, and the beaks, w-hich 

 are placed nearl\- in the center, Mill distinguish it from all 

 others. 



Section >*Iicroconi)YL.--ra ^'est, 1866. 



MicrocondyUca \'r.sT, \'erh. Mitth. Sieben. \'er. Nai., 1866, p. 



201. 



Shell inequilateral, elong'ate, subrhomboid or elliptical, com- 

 pressed, rather thin, with low beaks ; teeth rudimentary, much 

 compressed, a single one in each valve ; nacre bluish or pur- 

 plish-white. 



Animal, as in typical Le(!;iuninaia. 



Type, Anodortta iiniopsis Lamarck. 



Li'GUMiNAi.^ UMOi'sis (Lamarck). 



Shell oblong, sul)elliptical, obovate or subrhomboid, more or 

 less compressed, scarcely subsolid, quite inequilateral ; beaks 

 low, their sculpture a number of delicate ridges running nearly 

 parallel with the dorsal line, though sometimes slightly doubly 

 looped ; posterior ridge low, often faintly double, ending be- 

 hind at or below the median line in a feeble biangulation ; 

 anterior end narrowed, often a little angular above; surface 

 unevenly, but delicately, sculptured w^ith concentric growth 

 lines, ashy-green in front, green behind, or brownish, some- 

 times nearly black : there is generally a single low, subcom- 

 pressed, rounded tubercle in each valve, though it is some- 



