68 SMITH : RECENT SPECIES OF THE GENUS PIRULA, LAMARCK. 



Pyrida Dussu7nieri, Tryon. Man. Conch., vol. vii., p. 266, pi. v., f. 30. 



Ficula Dussu/nieri, Reeve. Conch. Icon., f. 2. 



Ficula Dussumieri, Sowerby. Thes. Conch., vol. iv., p. no, 



pl- 423, f- 5- 

 Ficula Dusswnieri, Kobelt. Conch. Cab., ed. 2, p. 10, pl. i., f. i. 

 Ficus Dussumieri, Rousseau in Chenu's 111. Conch., pl. i., fig. 2a 

 (annual). 

 Hab. : China Sea (Kiener, &c.) ; Bay of Bengal in 65 fms. 

 ("Investigator" Coll. in India Mas.). 



P. testa clongaio ficifori/ii, tenui, albida, brunnconebulosa., 



striis, longitudinalibus e.xi/issimis, tratisversis einineiitwribuSy 



planulatis ; aperturd ifitus bniunea, labia externa albido ; long. 



4y*o nnc. lat. 2^^ uric. 



Obs. A shell of more slender proportions than the other Figs., 



and apparently very distinguishable by the characters given above. 



There are several specimens in this collection, but the locality has 



not been preserved with any of them." 



Such is the description given by Sowerby of his P. gracilis, and 

 it seems to me that it can only apply to the species commonly 

 known as P. Dussiunieri. It is catalogued by M. Petit (J. de 

 Conch., 1852, p. 149) as a distinct species with the localTty " Golfe 

 du Mexique." The only species at present known from that locality 

 is P. papyracea, and Sowerby 's description does not suit that shell. 

 The term " brunneo-nebulosa '' and the flattened ridges are charac- 

 teristeric of Dussumieri and not of papyracea, the only form with 

 which it could possibly be confounded. 



The P. elongata of Gray described a year previous to the 

 publication of P. Dussumieri, is evidently the same species, for 

 the description in Beechey's Voyage, although brief, is applicable to 

 that form only. 



5. Pirula ventricosa, Sowerby. 



Pirula ventricosa, Sowerby. Tankerville Cat. Appendix, p. xvi. (1S25). 

 Bulla decussata. Wood. Index test, supp., p. 9, pl. iii., f. 3 (1828). 

 Pyrula ventricosa, Kiener. Icon. Coq. Viv., p. 27, pl. xii., f. 2. 

 Ficula decussata. Reeve. Con. Icon., f 3. 



Ficula decussata, Kobelt. Con. Cab., ed. 2, p. 10, pl. xxiv., f. 3. 

 Ficula reticulata, Sowerby. Thes. Con., vol. iv., p. 1 10, pl. 423, f 6, 7. 

 Pyrula decussata, Tryon. Man. Conch., vol. vii., p. 266, pl. vi., f 34. 

 Ficus decussatus, Chenu. Man. Conch., vol. i., p. 211, f. 1151. 



Hab. : Gulf of California, Panama, and other localities on the 

 west coast of Central America. 



