8o 



DISCOVERY REPORTS 



Rendahl, I have been able to examine this specimen, and to compare it with examples 

 of C. kathleenae of similar size. Two damaged specimens, 125 and 135 mm. in total 

 length, from Deception Island, South Shetlands (taken from the stomach of a Blue 

 Whale) ; and two others, 67 and 69 mm. in total length, from the stomach of a Fin 

 Whale, captured in the Weddell Sea (65° 04' S, 54° 12' W), appear to belong to this 

 species. As in the young of C. kathleenae, the eye is proportionately smaller in these 

 small examples, the diameter being about 5 in the length of the head in specimens of 

 67 and 69 mm. The pelvic fin-rays are simple, and the pelvic fins are entirely pale. 



Genus CHAENODRACO 



Chaenodraco, Regan, 1914, Ann. Mag. Nat. Hist., (8) xiii, p. 13; 1914, Rep. Brit. Antarct. 

 {'Terra Nova') Exped. 1910, Zool. i (i), p. 12. Type Chaenodraco wilsoni, Regan. 



Closely related to Chionodraco, but the supraorbital ridges are not crenulated, the 

 gill-rakers are developed as dentigerous prominences, and the pelvic fins are each 

 formed of a spine and only four rays. 



A single species. 



Coasts of the Antarctic Continent. 



Chaenodraco wilsoni, Regan. 



Chaenodraco wilsoni, Regan, 1914, t.c, p. 13; 1914, t.c, p. 12, pi. ix, fig. i; Norman, 1937, 

 t.c, p. 79. 



? Chaenodraco fasciatus, Regan, 1914, t.c, p. 14; 1914, t.c, p. 13, pi. ix, fig. 2. 



Fig- 51- 



Chaenodraco wilsoni. x \. 



Depth of body 6 to 7 in the length, length of head z\ to 3^. Snout less than \ length 

 of head; diameter of eye 4 (young) to 4^, interorbital width 3f to 4I in length of head. 

 Rostral spine antrorse. Jaws equal anteriorly or lower a little projecting; maxillary 

 extending to below anterior J or ^ of eye. Operculum with a group of 4 or 5 spines, the 

 uppermost bi- or tri-fid; 12 to 14 gill-rakers on lower part of anterior arch. Dorsal 

 VI-VIII, 38-42; spinous dorsal separated from soft dorsal by a narrow interspace 

 (young), or continuous with it at the base (adult). Anal 32-35. Pectoral with 22 to 

 24 rays, f to nearly | length of head, extending to above anterior rays of anal ; pelvics 

 I 4, as long as or nearly as long as head, extending to anterior part of anal or beyond. 

 Caudal subtruncate or a little rounded. Pale brownish, with dark spots on the head 



