1878. Verticordia Deshayesiana Kobelt, Illustr. Conchylienbuch, p. 374, pi. C, fig. 22. 



1885. Verticordia deshayesiana Smith (ex parte), "Challenger" Lamellibranchia, p. 167. 



1887. Verticordia Deshayesiana Fischer, P., Man. ConchylioL, p. 1161. 



1890. Verticordia Deshayesiana Paetel, Cat. Conch. Samm., III, p. 210. 



1909. Verticordia deshayesiana Melvill, Trans. Linn. Soc. London (Zool.), XIII, p. 136. 



19 10. Verticordia Deshayesiana Hedley, Austral. Ass. Adv. Sci., XII, p. 349. 



I agrée with Smith that V. Japonica A. Adams is a synonym of V. ( V.) deshayesiatia, 

 but I consider the spécimens from Pernambuco, which he assigned to this species to be distinct. 



The "Siboga" shells, which I refer to V. {V.) deshayesiana agrée in ail respects with 

 Fischer's description and figures, and also with some Japanese spécimens of the species in the 

 British Muséum Collection. 



Distribution: — V. (K) deshayesiana appears to hâve a wide range in the Pacific Océan. 



In the "Siboga" collection the species is represented by dead valves dredged at St. 95 

 (5° 43-5 N-' ii9°4o' E., 522 mètres), west of Kwandang Bay Entrance (St. 116) and St. 159 

 (o°59'. 1 S., 129° 48^8 E., 411 mètres). 



2. Verticordia [Verticordia) crebrilirata sp. nov. (Plate VII, figs. 19, 20). 



The following is a description of this new species : — Shell small, cardiform, rather 

 inflated, umbones strongly prosogyrate, curved forwards and downwards; lunule deeply impressed-, 

 anterior margin subtruncate, posterior slightly convex; surface sculpture consisting of 25^ — 26 

 somewhat sharp, low, radial, transversely but feebly ridged ribs ; ligament internai ; right valve 

 with a strông subumbonal tooth, inner edge of left valve in corresponding position thickened; 

 ventral margin of valves slightly fluted. The shell is of a dirty white colour. 



Measurements of Holotype: — Length 4.3 mm., height 4.6 mm., diameter 3.7 mm. 



Locality: — The unique Holotype was dredged at St. 97 (5° 48^.7 N., 119° 49^.6 E., 

 564 mètres). 



Remarks : — F. ( F.) crebrilirata is closely allied to V. ( F.) deshayesiana P. Fischer, 

 but is distinguished by the form of the shell, the much larger number of ridges and a generally 

 différent type of sculpture. 



3. Verticordia} expansa sp. nov. (Plate VII, figs. 21, 22). 



This new species of the genus Verticordia is very closely allied to V. woodi Smith '), 

 but is larger than high, much less ventricose, with the preumbonal area much shorter, the 

 umbones more acute, the posterior margin in the upper part more truncate, and the sculpture 

 consisting of irregularly scattered but close set granules. The shell is of a yellowish brown colour, 

 and the nacre is pearly white. 



Measurements of Holotype: — Length 8 mm., height 7.8mm., diameter 5 mm. 



Locality: — The unique Holotype was brought up in a deep-sea trawl at St. 178 (2° 40' S., 

 i28°37'.5 E., 835 mètres). 



Remarks : — As noted above, V. expansa resembles V. woodi from off Pernambuco 



1) Smith, E. A. — "Challenger" Lamellibranchia, p. i68, pi. XXV, fig. 7, -ja^b (1885). 



