FISHES. — MCCULLOCH. 91 



Gentriscops obliquus, Waite, Rec. Cantb. Mus., i„ pt 4 1912 

 p. 318. 



Gentriscus (Limiculina) humerosus, Fowler, Proc. Acad Nat 

 Sci. Philad., 1907 (1908), p. 426. 



(Not Gentriscops humerosus, McCulloch, Zool. Results 

 "Endeavour," i., pt. 1, 1911, p. 21, fig. 9, and pi. v. 

 Id., Waite, Rec. Cantb. Mus., i., pt. 3, 1911, p. 169, 

 = Notopogon lilliei, Regan.) 



The collection includes thirty- three specimens, 152-245 mm. 

 long from the end of the snout to the tips of the middle caudal 

 rays. The smallest agree perfectly with Richardson's figure, 

 while the largest are well represented by Waite's plate of 

 G. obliquus. The form of the body is very variable, but the 

 dorsal hump is always much more pronounced in old than in 

 young specimens. The ventral profile may form either a very 

 deep carve or only a shallow one, and the slope from the vent to 

 the caudal peduncle, together with that from the dorsal spine, is 

 much more abrupt in some than in others. The dorsal spine is 

 always much shorter in adults, and the snout is a little variable 

 in length. The eye increases in size with age, and becomes 

 surrounded with more or less numerous spinules. 



All the specimens had the oblique bands shown in Waite's 

 figure, but they have become indistinct or have been lost during 

 preservation. When first received, some retained patches of a 

 deep rose-pink colour and the oblique bars were yellowish ; the 

 pink was broken up into an angular network on the head and in 

 front of the pectorals. 



The principal difference between C. obliquus and C. humerosus 

 lies in the presence or absence of the oblique colour-bands, but I 

 regard this as entirely due to the state of preservation of the two 

 type specimens. All the differences in form between them are 

 fully accounted for by the changes which this species undergoes 

 with growth. 



Locs. — Great Australian Bight, Long 129°28'E., 350-450 

 fathoms ; 14th May, 1913. 



Great Australian Bight, Long. 126°45i'E., 130-320 fathoms. 



Genus Notopogon, Began. 



Notopogon lilliei, Regan. 



Notopogon lilliei, Regan, Ann. Mag, Nat. Hist. (8), xiii., 1914 

 pp. 14, 20. 



