331 



Measurements of Holotype : — Length 8 mm., height 5.9 mm., diameter 4.5 mm., length 

 of rostrum 2.2 mm., depth of rostrum 2 mm. 



Habitat: — The unique Holotye of C. (C) solidnla was dredged at St. 95 (5°43'.4N., 

 ii9°4o'E., 522 mètres), 



8. Ctispidaria [Cardiouiya) gouidiana (Hinds). 



1843. Neaera Gouidiana Hinds, Proc. Zool. Soc. London, p. fj. 



1844. Neaera Goiddiana Hinds, Ann. Mag. Nat. Hist., (i) XIII, p. 308. 



1844. Neaera Goiddiana Hinds, Zool. Voy. "Sulphur", p. 70, pi. XX, fig. 17. 



1845. Neaera Gouidiana Catlow & Reeve, Conch. Nomencl., p. 10. 

 1856. Neaera Goiddiana Adams, H. & A., Gen. Rec. MolL, II, p. 369. 

 1860. Neaera Gouidiana Reeve, Elem. Conch., IL p. 155. 



1862. Neaera Gouidiana Chenu, Man. Conchyliol., II, p. 50, fig. 208. 



1864. Cardiouiya Gouidiana Adams, A., Ann. Mag. Nat. Hist., (3) XIII, p. 208. 



1868. Neaera [Cardiornya) Gouidiana Conrad, Amer. Journ. Conch., IV, p. 58. 



1868. Neaera [Cardiornya) Gouidiana Adams, A., Ann. Mag. Nat. Hist., (4) II, p. ^ôj. 



1878. Neaera Gouidiana Kobelt, Illustr. Conchylienbuch, p. 322, pi. XCIII, fig. 7. 



1882. Neaera [Cardiomya] gouldina (sic), Dunker, Ind. Moll. Mar. Japon., p. 180. 



1884. Neaera {Cardiornya) Gouidiana Tryon, Struct. Syst. Conch., III, p. 141. 



1884. Neaera Gouidiana Grasset, Ind. Test. Viv., p. 245. 



1885. Neaera Gouidiana Smith, "Challenger" Lamellibranchia, p. 36. 



1887. Cuspidaria [Cardiomya) Gouidiana, Fischer, P., Man. Conchyliol., p. 1155. 



1890. Neaera Gouidiana Paetel, Cat. Conch. Samm., III, p. 27. 



1903. Neaera Gouidiana Hidalgo, Obras Malacol., II, p. 43. 



1905. Neaera Gouidiana Hidalgo, Cat. Filip., p. 297. 



1906. Cuspidaria Goiddiana Owston, Japan. Loochooan Shells, p. 41. 



1928. Cuspidaria gouidiana Faustino, Summary Philippine Mar. Freshw. Moll., p. 45. 



C. (C) goiddiana is closely allied to C. (C) smgaporensis (Hinds) and N. (C) pulchella 

 (H. Adams), but the shell of this species is much thinner and the ridges liner and not so 

 broad as in the other two species. 



Distribution : — C. (C) gouidiana is confined to the Pacific Océan. 



In the "Siboga" collection the species is represented from St. 306 (8° 27' S., 122° 54^.5 E., 

 247 mètres). 



9. Cuspidaria [Cardiomya^ sibogai sp. iiov. (Plate IX, figs. 18, 19). 



C. (C) sibogai belongs to the gotildiana-groM'Ç) of species of the subgenus Cardiomya^ 

 but the shell of this new species is very large, very tumid, globose, and the narrow tubular 

 rostrum is about half the length of the shell. The sculpture consists of very fine and regular 

 concentric striae and about 35 compressed, raised, hollow ridges running from the umbones 

 downwards and outwards. The concentric striae are continued as parallel striae on the rostrum, 

 somewhat curved, but a few of them turn upwards next to the oblique ridge and form trans- 

 verse rugae. The shell is of a straw colour, the nacre being dull white. 



Measurements of Holotype: — Length 25.6 mm., height 12.7 mm., diameter 10.8 mm. 



Habitat : — The unique Holotype of this beautiful species was brought up in a deep-sea 

 trawl at St. 48 (8°4'.7S., 1 18''44'.3 E., 2060 mètres). Unfortunately the left valve is damaged. 



