62 



DISCOVERY REPORTS 



lateral line, which ends below anterior part of dorsal fin. Dorsal 34-38. Anal 29-33. 

 Pectoral with 21 or 22 rays, f to f length of head, extending to above anterior rays of 

 anal; pelvics shorter, not reaching vent. Caudal rounded or subtruncate. Head and 

 body with numerous dark spots ; usually a well-defined lateral series of large oblong or 

 squarish spots ; a deep black spot on base of anterior part of dorsal fin and sometimes 

 2 or 3 smaller spots more posteriorly ; some small spots on the rays of the dorsal fin ; 

 caudal and pectorals with spots or irregular cross-bars; anal generally with a dark 

 longitudinal band along its margin, becoming narrower posteriorly, the rays tipped 

 with white ; pelvics pale or more or less dusky. 



Fig. 37. Prionodraco evansii. x 



Hab. South Orkneys; Mac-Robertson Land; Queen Mary Land; South Victoria 

 Land. 



The types of the species, 11 specimens, measuring up to 132 mm. in total length, 

 are from the Ross Sea (74° 25' S, 179° 3' E), 290 metres ; and the entrance to McMurdo 

 Sound (76° 56' S, 164° 12' E and 77° 13' S, 164° 18' E), 300 and 380 metres. In 

 addition to the types and the examples obtained by the Discovery Committee, the 

 above description includes a number of specimens, up to 145 mm. in total length, 

 collected by the B.A.N. Z. Antarctic Research Expedition. 



Genus CYGNODRACO 



Cygnodraco, Waite, 1916, Austral. Antarct. Exped. Set. Rep., Ser. C, in (i), Fishes, p. 32. Type 

 Cygnodraeo mawsoni, Waite. 



Body elongate, compressed, naked; two lateral lines, the upper terminating below 

 posterior part of dorsal fin, the lower represented by a broken series of depressed, non- 

 perforate scales, running along middle of hinder part of body. Head scarcely depressed ; 

 snout produced, spatulate; interorbital region narrow; jaws with bands of small, 

 villiform teeth. Operculum with upper edge concave, armed with divergent ridges 

 ending in spinous points; gill-rakers represented by very small, flat, dentigerous 

 knobs; gill-membranes free from the isthmus but slightly united anteriorly. Dorsal 

 with 61 to 66 rays; anal with 35 to 38 rays. Pelvics rather long and narrow, as long as 

 or longer than the pectorals. 



A single species. 



Coasts of the Antarctic Continent. 



