148 



Lamy ^) rightly remarked that Cardita [Glans) echinaria appears to be allied to the 

 Mediterranean species C. aculeata (Poli), but is distinguished by its quadrangular shell, which is 

 somewhat sharply truncate posteriorly, and even though rounded at its anterior lower angle, 

 its anterior margin appears almost as a straight line. Melvill & Standen's measurements of 

 the type spécimen, which is now in the British Muséum (Nat. Hist.), London are altogether 

 inaccurate ; thèse are: — Length 14.5 mm., height 13.4 mm., diameter 1 1 mm. 



Distribution : — C. {G.) echinaria was described from the Persian Gulf. 



In the "Siboga" collection the species is represented by a number of young shells and 

 a large left valve (Length 21 mm., height 18.5 mm.). The various stations from which the 

 species was collected are: — St. 49 (8° 20'. 5 S., ii9°4'.5E,, 369 mètres). St. 59 (10° 22'. 7 S., 

 i23°i6'.5E., 390 mètres), St. 65 (7°o' S., i20°34'.5E., 5 10 mètres), St. 98 (6^9' N., i20°2i'E., 

 350 m.etres), St. 105 (6°8'N., 121° 19' E., 275 mètres) and a dead left valve at Sulu. 



Family Trapeziidae. 



Genus Glossocardia Stoliczka. 



1870. Glossocardia Stoliczka, Cretaceous Pelecypoda, S. India, p. 189. 

 1887. Glossocardia Fischer, P., Man. Conchyliol., p. 1075. 

 1920. Glossocardia Lamy, Journ. Conchyliol., LXIV, p. 268. 



Stoliczka proposed the new subgenus Glossocardia in 1870 for Cypricardia obessa Reeve^), 

 the habitat of which was not known hitherto. Stoliczka however, had received spécimens of 

 the species from Mauritius. 



Stoliczka's description of Glossocardia is very complète, while the hinge has been described 

 by Fischer and Lamy. 



I consider Glossocardia to be of generic rank equal to Trapezitim Megerle, as the hinge 

 and form of the shell is so différent in the species of the two gênera. 



I. Glossocardia stoliczkana sp. nov. (Plate VIII, figs. 15 — 18). 



I associate this species with the name of the late Dr. F. Stoliczka of the Geological Survey 

 of India and author of the genus Glossocardia. 



Species of a small size, shell elongated-trapezoid, ventricose, thin, inequilateral ; narrowly 

 rounded anteriorly, angulate and obliquely subtruncated posteriorly ; ventral margin slightly 

 arcuate ; umbones prominent, tumescent ; sculpture consisting of regular, close-set, microscopic 

 concentric striae ; posterior ridge well developed ; hinge similar to that of G. obessa (Reeve) 

 except that anterior cardinal in both valves is lamellar and not "bluntly tubercular". Shell of a 

 dirty white colour. 



Measurements of Holotype : — Length 20 mm., height 1 1.8 mm., diameter 9.6 mm. 



Habitat: — The unique holotype of the species was dredged at St. 97 (5°48'.7 N., 

 ii9°49'.6E., 564 mètres). 



i) Lamy, E. — Journ. Conchyliol., LXVI, p. 254 (1922). 



2) Reeve, L. — Conch. Icon., II, Cypricardia^ pi. II, fig. 10 (1843J. 



