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 tridentata, Forskal, Descriptiones animalium quse in itinere orientali observavit, 



p. 124. 

 1791. Cavolinia natans, Abildgaard, "Nyere Efterretning om det Skaldyr som Forskal bar 



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



pi. x. 



1801. Hyalxa cornea, Lamarck, Systems des animatix sans vertebres, p. 140. 

 1804. Hyalxa papilionaeea, Bary de St Vincent, Voyage dans les quatre principales Ues des 



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

 1810. Hyale teniobranche, Peron et Lesueur, " Histoire de la famille des Mollusques 



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

 1813. Hyalxa peroni, Lesueur, "M&noire sur quelques animaux mollusques, etc.," Nouv. 



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

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

 1816. Hyalxa australis, Pe'ron, 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-africanisdie Mollusken, p. 34, pi. ii. fig. 12 (non 



Lesueur). 

 1859. Cavolinia, telemus, 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 cumingii, Sowerby, in Reeve, Conchologia iconica, t. xx., Pteropoda, fig. 5. 



Hab.L&i, 39 58' S., long. 8 36' AV., 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). 



Hob. 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, Dall, in lat. 71 '22' S., long. 16 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.) 



