112 THE VOYAGE OF H.M.S. CHALLENGER. 



3. Stomatella (Gena) nigra, Quoy and Gaimard. 



Stomatella nigra, Quoy and Gaimard, Voy. Astrol., vol. iii. p. 307, pi. lxvi. bis, figs. 10-12. 



„ ,, Lamarck, Anim. s. vert. (ed. Desk), vol. ix. p. 18, 1 sp. 6. 



Gena nigra, A. Adams, Proe. Zool. Soc. Lond., 1850, p. 37. 



Stomatella nigra, A. Adams in Sowerby, Tb.es. Conch., pt. 15, vol. ii. p. 829, sp. 4, pi. clxxiii. figs. 

 14-16. 



„ ,, Eeeve, Concb. Icon., vol. xix. pi. ii. fig. 11. 



? Station 11 3a. September 1, 1873. Lat. 3° 47' S., long. 32° 24' 30" W. Anchorage, 

 Fernando Noronha. 25 fathoms. Volcanic sand and gravel. 



April 17, 1874. Port Jackson, Sydney. 2 to 10 fathoms. 



Habitat. — Tongatabu and Sandwich Islands (Quoy and Gaimard), Princes Island in 

 the Bight of Biafra, West Africa (British Museum). 



The specimen of this shell from Station 113a which I have had to identify is very young, and I 

 could not have attributed it to this species, even with an expression of doubt, but for the fact that 

 it does seem specially to agree with the British Museum specimens from the West Coast of Africa, 

 a fact which brings the species within a possible distance of Fernando Noronha. At the same time, 

 one cannot but feel that there is a mistake somewhere. I think that mistake does not lie in my 

 identification : I am sure it does not in the Challenger register of localities. 



As to the specimens from Port Jackson, I am indebted to Mr E. A. Smith for identifying them 

 for me. They are very young, and had been overlooked at the proper time for identification, and 

 turned up in a bottle with some larger mollusks. I had thought they were probably Gena strigosa, A. 

 Ad. ; but Mr Smith says, " I cannot separate this from Gena nigra, Q. and G., var. of the Cumingian 

 collection named by A. Adams." This remark of Mr Smith's strengthens a doubt I had already felt 

 of the distinctness of these two species. Mr Angas does not give Gena nigra, but only Gena strigosa 

 in his list of Port Jackson Mollusca (Proc. Zool. Soc. Lond., 1867, p. 218). 



7. Scissurella, D'Orbigny, 1823. 



Species. 



1. Scissurella crispata, Flem. 4. Scissurella coronata, n. sp. 



2. Scissurella alia, n. sp. 5. Scissurella declinans, n. sp. 



3. Scissurella aedonia, n. sp. 6. Scissurella obliqua, n. sp. 



1. Scissurella crispata, Fleming. 



Scissurella crispata, Fleming, Mem. Wern. Soc, vol. vi. p. 385, pi. vi. fig. 3. 



„ „ Forbes and Hanley, Brit. Moll., vol. ii. p. 544, pi. lxiii. fig. 6. 



„ Loven, Ind. Moll. Skand., Ofversigt Vetensk. Akad. Forh., 1846, p. 152, No. 151. 

 „ striatula, Philippi, Enum., vol. ii. p. 160, No. 2, pi. xxv. fig. 33. 

 ,, aspera, Philippi, Enum., vol. ii. p. 160, fossil, pi. xxv. fig. 17. 



This page in Lamarck is by mistake numbered 28. 



