RAJIDAE 10 



St. WS 91. 8. iv. 27. 52 53' 45" S, 64° 37' 30" W. Commercial otter trawl, 191-205 m.: 1 male- 

 specimen, 165 mm. (width of disc 105 mm.). 



St. WS 92. 8. iv. 27. 51 58' 30" S, 6501'W. Commercial otter trawl, 145-143 m.: 1 male 

 specimen, 185 mm. (width of disc 125 mm.), 1 female, 410 mm. (width of disc 275 mm.). 



St. WS 94. 16. iv. 27. 50 ' 00' 15" S, 64 57' 45" W. Commercial otter trawl, 1 10-126 m. : 3 male 

 specimens, 445-450 mm. (width of disc 300-310 mm.). 



St. WS 95. 17. iv. 27. 48 58' 15" S, 64 45' W. Commercial otter trawl, 109-108 m. : 1 male 

 specimen, 300 mm. (width of disc 205 mm.), 3 females, 155-490 mm. (width of disc 105-340 mm.). 



St. WS 96. 17. iv. 27. 48° 00' 45" S, 64 58' W. Commercial otter trawl, 96 m. : 1 male specimen, 

 140 mm. (width of disc 90 mm.). 



St. WS108. 25. iv. 27. 48° 30' 45" S, 63 33' 45" W. Commercial otter trawl, 1 18-120 m.: 1 male 

 specimen, 280 mm. (width of disc 190 mm.), 1 female, 255 mm. (width of disc 170 mm.). 



St. WS 109. 26. iv. 27. 50 18' 48" S, 58 28' 30" W. Commercial otter trawl, 145 m.: 1 male 

 specimen, 445 mm. (width of disc 300 mm.). 



St. WS 223. 8. vi. 28. 49° 13' S, 64 52' W. Commercial otter trawl, 114 m.: 1 female specimen, 

 260 mm. (width of disc 175 mm.). 



St. WS 245. 18. vii. 28. 52 36' S, 6340'W. Commercial otter trawl, 304-290 m.: 1 female 

 specimen, 360 mm. (width of disc 245 mm.). 



St. WS 246. 19. vii. 28. 52 25' S, 61 ' 00' W. Commercial otter trawl, 267-208 m.: 1 male 

 specimen, 365 mm. (width of disc 260 mm.). 



Disc a little broader than long, its width § to nearly f of the total length ; anterior 

 margins more or less undulated, not emarginate ; outer angles rounded. Vent a little nearer 

 to end of tail than to tip of snout. Snout scarcely projecting, but with a short, obtuse, 

 triangular projection in the young, its length about \ width of disc; interorbital width 

 a little less than length of eye + spiracle, which is if to z\ in that of snout. Internasal 

 width about | praeoral length of snout. Mouth nearly straight ; teeth rather large, with 

 pointed crowns, which may be worn down so that the teeth appear flat ; 26 to 30 rows 

 in the upper jaw. Upper surface of disc mainly smooth, but with a broad area on the 

 anterior margin of each pectoral fin covered with small scattered spines ; adults often 

 with a small patch of similar spines on the posterior part of the pectoral, or with the 

 anterior group extending posteriorly to the hinder part of the fin ; usually a number 

 of spines on the snout and round the eyes ; 1 fairly strong praeocular and 1 similar 

 postocular spine ; generally 2 scapular spines, but the outer one may be absent ; a median 

 series of 26 to 30 stronger spines, extending from the nuchal region to the first dorsal 

 fin ; a strip of small asperities on either side of the median series of spines ; mature 

 males with 1 or 2 series of alar spines. Lower surface quite smooth. Dorsal fins close 

 to end of tail, generally separated by a spine. Brownish or greyish, with a number of 

 dark, undulating lines, sometimes broken up into spots, 1 many of them enclosing circular 

 or oval areas of paler ground colour; always a large and more distinct oval pale area, 

 margined with dark brown or black and partially divided into two by a dark line, on 

 posterior part of each pectoral base ; lower surface uniformly yellow or white. 



Hab. Patagonian-Falklands region; Straits of Magellan. 



The specimens listed above agree closely with Steindachner's original description 

 except in the matter of the scapular spines, which are said to be three in number on 

 1 This appears to be the case in the specimens taken in deeper water. 



3-2 



