CHAENICHTHYIDAE 8i 



and with 5 blackish cross-bars on the body; sometimes some additional blotches or 

 bars between the cross-bars ; a large black spot on the spinous dorsal ; other fins more 

 or less dusky. 



Hab. Mac-Robertson Land ; South Victoria Land. 



The type of the species, 250 mm. in total length, is from McMurdo Sound, 187 to 

 375 metres ; the type of C. fasciatus, 92 mm. in total length, is from McMurdo Sound 

 (77° 13' S, 164° 18' E), 380 metres. I have elsewhere given reasons for regarding these 

 species as probably identical. A number of specimens, 205 to 268 mm. in total length, 

 collected by the B.A.N. Z. Antarctic Research Expedition, are included in the above 

 description. 



ZOARCIDAE 



Key to the Antarctic Genera^ 



I. Pelvic fins present; gill-opening cleft downward at least to middle of base of pectoral. 



A. Origin of dorsal well behind base of pectoral ... ... ... i. Lycenchelys 



B. Origin of dorsal above base or anterior part of pectoral 



1. Mouth large, with wide lateral cleft; anterior canines in upper jaw and lateral 

 canines in lower; palate toothless 2. Lycodichthys. 



2. Mouth moderate, with short lateral cleft; no well-marked canines; teeth on palate. 



3. AUSTROLYCICHTHYS. 



II. No pelvic fins; gill-opening small, above base of pectoral ... ... 4. Melanostigma. 



Genus LYCENCHELYS 



Lycenchelys, Gill, 1884, Proc. Acad. N.S. Philad., p. no; Regan, 1913, Trans. R. Soc. Edin- 

 burgh, XLix, p. 242. Type Lycodes muraena, Collett. 



Form elongate, with the tail long and slender, body naked. Upper jaw projecting; 

 teeth in jaws slender, uni- or bi-serial; teeth on vomer; palatine teeth uniserial. Gill- 

 opening rather wide, cleft downward to lower end of base of pectoral. Origin of dorsal 

 fin well behind base of pectoral ; pelvic fins present. 



Several species from deep water north of the Equator ; one species from the Antarctic. 



Lycenchelys antarcticus, Regan. 



Lycenchelys antarcticus, Regan, 1913, t.c, p. 242, pi. ix, fig. 3. 

 Depth of body 16 in the length, length of head 6. Head as broad as deep, its breadth 

 a little more than \ its length. Snout twice as long as eye, diameter of which is 6 in 



^ In 1885, Fischer [Jahrb. Hamburg. Wiss. Anst., u, p. 60, pi. ii, fig. 9) described and figured a new 

 genus and species of Zoarcid fish, Gymnelichthys antarcticus. The description was based upon 4 specimens, 

 no to 220 mm. in total length, said to be from South Georgia. Through the kindness of Miss Erna Mohr, 

 I have been able to examine three of these types, now preserved in the Hamburgisches Zoologisches Museum 

 und Institut: No. 3902, 2 specimens, no and 120 mm.; No. 3942, i specimen, 183 mm. 



As was the case with Fischer's genus of Cottidae, Sclerocottus schraderi (see Norman, 1935, Copeia, 

 No. 3, p. 141), it seems likely that the type locality is incorrect, and that the fish were never collected at 

 South Georgia. Comparison of these type specimens with material in the British Museum shows that they 

 are referable to a species of Zoarcid common in Arctic seas, namely, Gymnelis viridis (Fabricius). 



