132 DR JAMES COSMO MELVILL AND MR ROBERT STANDEN ON THE 



dredged either from the same or neighbouring localities, but none in a condition to 

 examine seriously. 



Sub-order PTEROPODA. 



Section Thecosomata, de Blainville. 



Cavolinia tridentata (Forskal). 



1773. Anomia trident ata, Forskal, Descriptions aniinalimn qux in itinere orientali observavit, 



p. 124. 

 1791. Cavolinia natans, Abildgaard, "Nyere Effcerretning om dot Skaldyr som Forskal har 



beskrevet under Navnet Anomia tridentata," Skrie. naturhist. Selsk., Bd. i., Heft 2, 



pi. x. 



1801. Hijalsea cornea, Lamarck, Systhne ties animaux sans vertbbres, p. 140. 

 1804. Hyalxa papi/ioiiacea, Bary de St Vincent, Voyage dans les quatre principals lies des 



mers d'Afrique, t. i. p. 137, pi. v. fig. 1. 

 1810. Hi/ale teniobranche, Peron et Lesueur, " Histoire de la fatnille des Mollusques 



Pteropodes," Ann. Mus. Hist. Nat. Paris, t. xv., pi. ii. fig. 13. 

 1813. Hyalxa peroni, Lesueur, "Memoire sur quelques animaux mollusques, etc.," Nouv. 



Bull. Soc. Philom., t. iii. p. 284. 

 1813. Hyalxa chemnitziana, Lesueur, ibid., p. 284. 

 1816. Hyalxa australis, Peron, Voyage de decouve.rtes aux terres australes, t. i , pi. xxxi. fig. 5 



(sine descriptione). 

 1821. Hyalxa forskahlii, Lesueur, MS., in de Blainville, "Hyale," Diet. d. Sci. Nat., t. xxii. 



p. 79. 

 1836. Hyalxa affinis, d'Orbigny, Voyage dans I'Amerique meridionals, t. v. p. 91, pi. v. 



figs. 6-10. 

 1848. Hyalxa truncata, Krauss, Siid-africanisc/te Mollusken, p. 34, pi. ii. fig. 12 (non 



Lesueur). 

 1859. Cavolinia telemtts, A. Adams, "On the Synonyms and Habits of Cavolinia, Diacria, and 



Pleuropus," Ann. and Mag. Nat. Hist., ser. 3, t. iii. p. 44. 

 1877. Hyalxa aimingii, Sowerby, in Reeve, Conchologia iconica, t. xx., Pteropoda, fig. 5. 



Hal. Lai. 39 58' S., long. 8 36' W., tow-net, surface, temp. 55"'2. 

 Many living specimens, large and fine. Between Stations 470 and 471. 



Class SCAPHOPODA. 



Dentalium eupatrides, M. and St. 



Dentalium eupatrides, Melvill and Standen, Trans. Roy. Soc. Edin., vol. xlvi., part i., p. 142, 

 pi. fig. 12(1907). 



Hal). The original locality of this fine smooth abyssal species was accidentally 

 omitted in our first paper. It occurred, with the other species chronicled, 

 D. megathyris, Ball, in lat. 71 '22' S., long. 16 C 34' W., at 1410 fathoms, 

 Station 417. Many fragmentary portions of probably the same shells have been 

 dredged up from Station 420, at 2620 fathoms. 



(ROY. soc. EDIN. TRANS., VOL. XLVIII., 358.) 



