160 DR. W. E. HOYLE— BISCATAN PLANKTON : 



the previously recorded localities have been as follows : — North of New Guinea (' Chal- 

 lenger,' Station 220) ; off the Marshall Islands (' Albatross,' Station 220, 1900) ; in the 

 Gulf of Panama (' Albatross,' Stations 3366, 3415, and 3420, 1891) ; off the New England 

 Coast (' Albatross,' Station 2099, 1883). 



Chun (Verb, deutsch. zool. Ges. vol. xii. pp. 162-182, 1902) has expressed the opinion 

 that Eledonella and Bolitcena are synonymous, but, so far as I am aware, he has not 

 published the grounds for this view. 



Ontchoteuthis sp. 



Locality: Z\b, July 20; lat. 47° 15' N., long. T 41' W. ; depth, surface to 

 50 fathoms; temperature, 52° to 64° E. ; two specimens [II1064, 1065J. 



The appearance of the larger of these two specimens, which measures a little over 

 5 mm. in length, is shown in the accompanying figure (fig. 2). Of special interest is 



Fis. 2. 



the small size of the fin in these immature stages, to which attention has already been 

 called by Pfeffer (" Synopsis oegopsid. Ceph.," Mitt, naturhist. Mus. Hamburg, vol. xvii. 

 p. 159, 1900). The tentacles also are seen to be present only as minute rudiments, 

 contrasting strongly with the more developed arms. 



Teleotetjthis caribb^a (Lesueur). 



Locality : 30 1, July 19 ; lat. 47° 14' N., long. 7° 58' W. ; depth, surface to 

 50 fathoms; temperature, 52° to 64° E. ; two specimens [H1062, 1063]. 



This species appears to be one of the commonest and most widely distributed of all 

 pelagic forms. It has been found pretty frequently both in the Atlantic and Pacific 

 Oceans, but the records from the Mediterranean require confirmation. 



A character often noticeable in the young stages is a pair of conspicuous chromato- 

 phores, which appear as elongated spots in a latero-ventral position halfway along the 

 fin. These are not seen, however, in either of the examples now under notice ; they are 

 both very dark in colour, and perhaps the spots have been masked by a rearrangement 

 of the chromatophores. 



