147 



6. Cardita ( Venericardia) cardioides Reeve. 



1843. Cardita cardioides Reeve, Conch. Icon., I, Cardita, pi. IX, figs. \<^ a — c. 



1844. Cardita cardioides Reeve, Proc. Zool. Soc. London, (vol. for 1843), p. 194. 



1845. Cardita cardioides Catlow & Reeve, Conch. Nomencl., p. 46. 



1857. Actinobolus cardioides Adams, H. & A., Gen. Rec. Moll., II, p. 487. 



1870. Actinobulus (sic) cardioides MacAndrevv, Ann. Mag. Nat. Hist., (4) VI, p. 448. 



1886. Cardita cardioides Cooke, Ann. Mag. Nat. Hist., (5) XVIII, p. lOi. 



1888. Cardita cardioides Clessin in Martini-Chemn. Conch. -Cab. (N. F.), X(i), Carditacea p. 31, 



PI. XII, figs. 1-3. 



1890. Cardita cardioides Paetel, Cat. Conch. Samm , III, p. 140. 



1896. Cardita cardioides Casto de Elera, Cat. Sist. Filip., p. 786. 



1905. Venericardia cardioides Hidalgo, Cat. Filip., p, 360. 



1909. Cardita cardioides Hediey, Austral. Ass. Adv. Sci., XII, p. 347. 



'' 1922. Venericardia {Cardites) cardioides Lamy, Journ. Conchyliol., LXVI, p. 329. 



1928. Cardita cardioides Faustino, Summary Philippine Mar. Freshw. Moll. p. 50. 



Smitei ^) united Cardita canaliciclata Reeve, C. cardioides Reeve and C. cumingi Deshayes 

 under the name C. canalicitlata. Lamy, while regarding C. cumingi as a synonym of C. ( K) canali- 

 culata^ considers C. (V.) cardioides Reeve as distinct. He distinguishes this species by "sa forme plus 

 globuleuse et par ses côtes crénelées plutôt convexes, séparées par des intervalles à fond arrondi". 



Distribution : — C ( F!) cardioides was described from the Philippines. 



The "Siboga" expédition collected mostly dead shells from the Bay of Bima (St. 47), 

 Macassar (St. 71), Anchorage off the south point of Kabaëna Island (St. 209) and Banda 

 Anchorage (St. 240). 



7. Cardita [Venericardia) pelseneeri sp. nov. (Plate V, figs. i, 2). 



This new species, which I associate with the name of the distinguished malacologist, 

 Dr. P. Pelseneer of Brussels, is closely allied to Cardita ( Venericardia) cardioides Reeve. It 

 is, hovirever, easily distinguished from the latter species by its thinner, lighter and more quadrate 

 shell; which is much less inflated, and has the umbones neither so tumid nor so prominent. 

 The ridges on the shell are much finer, more regular and finely eut, and the beads on the 

 ridges are more uniform and more numerous. The hinge is also more délicate. The shell is of 

 a light yellowr colour, with two or three transverse bars of a brownish tinge and a few splashes 

 of the same colour in the umbonal reo-ion. 



Measurements of Holotype : — Length 14 mm., height 14.5 mm., diameter 11.8 mm. 



Habitat: — The Holotype was dredged by the "Siboga" Expédition at St. 260 (5° 36^5 S. 

 i32°55'.2E., 90 mètres), while six other shells were collected on West side of Kwandang Bay 

 Entrance (St. 116), Anchorage off Sawan, Siau Island (St. 125), St. 260 (5° 36.^5 S., 132° 55^2 E., 

 90 mètres). St. 310 (8° 30' S., ii9°7'.5E., 73 mètres) and St. 321 (6°5'.5 S., 1 13°30^ E., 82 mètres). 



8. Cardita [Glans"")) echinaria Mellvill & Standen. 



191 1. Cardita echinaria Melvill & Standen, Proc. Zool. Soc. London, p. 813, pi. LVI, fig. 8. 

 191 1. Cardita echinaria Pelseneer, "Siboga" Lamellibranches (Anat.), p. 38. 



i) Smith, E. A. — "Challenger" Lamellibranchia, p. 211 (1885). 



2) For définition etc. of Glans Megerle see Cox, L. R. — Rept. Palaeontol. Zanzibar, p. 51 (1927), the génotype is Cardi/a 

 {Glans) irapezia (Einn.). 



