Pisces. 



179 



4. Tl'tEMATOMUS BORCHGREVINKI, Sp. 11. 

 (Plate XII.) 



Depth of body 4 to 5 times in total length, length of head 3 J- to 

 41 times. Diameter of eye 3 (young) to 4|- times in length of head, 

 interorbital width 3 to 3^ times ; maxillary extending to below 

 anterior Ijorder or anterior third of eye ; lower jaw projecting beyond 

 the upper ; upper surface of head naked ; small patches of scales on 

 cheek and on upper part of opercle ; openings of sensory canals on 

 head very large. Grill-rakers moderately long, 18 to 20 on lower 

 part of anterior arch. Dorsal V-VI, 34-37; longest rays \ to f 

 length of head. Anal 31-33 ; longest rays | to -^- length of head. 

 Pectoral somewhat truncate behind, f or | length of head (nearly as 

 long as head in the young). Caudal rounded. Caudal peduncle as 

 long as deep or a little deeper than long. Scales 97-110; lateral 

 line very indistinct, reduced to mere pits, tubular scales entirely 

 absent or very few. Yellowish, with more or less indistinct dusky 

 spots, forming vertical bars on the sides ; a spot above the shoulder 

 and another at the base of the pectoral fin ; fins whitish, the dorsal 

 usually with rather indistinct dark streaks. 



Six specimens measuring up to 275 mm. from Duke of York 

 Island, on the surface among the ice floes, and 6 from Cape Adare, 

 caught near the surface. One of these has been figured in Bernacchi's 

 ' South Polar Ptegions,' p. 98. 



Measurements and numbers of fin-rays and scales : — 



N 2 



