100 



DR WILLIAM EVANS HOYLE ON THE 



A drawing of the radula is given in fig. 9, as its form differs in a few details from 

 that shown by SMITH.* 



FIG. 9. Radula of Onychoteuihis ingens [H 925]. x 25. 

 HlSTIOTEUTHID^E. 



Histioteuthis sp. juv. 



Locality. Station 468, South Atlantic. Lat. 39 48' S., long. 2 33' E. 29th 

 April 1904. 2645 fathoms. One specimen [H 940]. 



The specimen is somewhat damaged. The interbrachial membrane is slightly devel- 

 oped. One arm shows the pigmented organ at the extremity, which, so far as I am aware, 

 is characteristic (in this family) of the genus Histioteuthis, although it is not alluded 

 to in the diagnosis either of PFEFFER or CHUN. In many respects it resembles the 

 Challenger specimen called Histiopsis atlantica, which was also from the same region, 

 but is pale and semi-transparent, whilst that was opaque and dull reddish in colour. 



BATHYTEUTHID^E. 



Bathyteuthis abyssicola, Hoyle, 1885. 

 Bentlwteuthis megalops, Chuu, " Cephalopoden," Wiss. Ergebn. deutsch. Tie/see Exped., p. 185, pis. xxiv.-xxvii. 



Locality. Station 416, off Coats Land. Lat. 71 22' S., long. 18 15' W. 

 Surface to 2300 fathoms. 17th March 1904. One specimen [H 938]. 



Previous Records. Southern Ocean, lat. 46 16' S., long. 48 27' E. ; off 

 Martha's Vineyard, U.S.A.; off Cape Mala, Gulf of Panama; off Cape Agulhas; 

 Equatorial Indian Ocean. 



Professor CHUN has adopted VERRILL'S name Benthoteuthis megalops for this 

 species, on the ground that "sheet 50 of the Trans. Connect. Acad., vol. vi., in 

 which VERRILL'S description is contained, bears (p. 399) the note 'April 1885.'' 

 If my friend is content to accept this method of determining dates of publication, 

 he may turn to sheet 34 of the Narrative of the Challenger Expedition, vol. i., 

 first part, in which HOYLE'S description is contained, and he will find that it bears 



* Proc. Zaol. Soc,, 1881, pi. iii., fig. 1 b. 

 (ROY. soc. EDIN. TRANS., VOL. XLVIII., 282.) 



