RAJIDAE 23 



the anterior spines of the series on the disc are wanting ; mature males with 3 or 4 series 

 of alar spines. Lower surface quite smooth. Dorsal fins close to end of tail, with or 

 without a spine between them. Brownish or greyish, with a number of small, scattered, 

 rounded white spots, sometimes margined with dark brown ; pelvics narrowly edged with 

 white ; lower surface uniformly white. 



Hab. Patagonian-Falklands region. 



This species appears to be most nearly related to R. brachyurops, but may be at once 

 recognized by the stronger median spines and different coloration, as well as by the 

 form of the mixopterygia. 



Raja brachyurops, Fowler. 



Rata brachyura (non Lafont), Gunther, 1880, Shore Fish. 'Challenger', p. 20, pi. vi; Berg, 1895, 

 Anal. Mus. Nac. B. Aires, iv, p. 14; Delfin, 1901, Cat. Peces Chile, p. 24; Lahille, 1921, 

 Physis, v, p. 63. 



? Raia brachyura, Vaillant, 1888, Miss. Sci. Cap Horn, vi. Zool., Poiss., p. 14, pi. ii, figs. 1, lb. 



Raia brachyurops, Fowler, 1910, Proc. Acad. N.S. Philad., lxii, p. 468; Garman, 1913, Mem. 

 Mus. Comp. Zool., xxxvi, p. 360. 



? Raia aguja, Marini, 1928, Physis, IX, p. 274, figs. 1, 2. 



? Raia gallardoi, Marini, 1933, Physis, xi, p. 331. 



St. 48. 3.V. 26. 8-3 miles N 53° E of William Point Beacon, Port William, Falkland Islands. 

 Large otter trawl, 105-115 m.: 1 egg-capsule, 1 embryo. 



St. 51. 4. v. 26. Off Eddystone Rock, East Falkland Island. Large dredge, 115 m.: 1 male 

 specimen, 130 mm. (width of disc 78 mm.), 1 female, 145 mm. (width of disc 75 mm.). Large otter 

 trawl, I05-H5m.: 3 male specimens, 140-150 mm. (width of disc 85-110 mm.), 3 females, 135- 

 170 mm. (width of disc 85-110 mm.), and 4 very small embryos. 



St. WS 73. 6. iii. 27. 51° 01' S, 58" 54' W. Commercial otter trawl, 121 m.: 2 male specimens, 

 240, 400 mm. (width of disc 175, 300 mm.), 2 females, 230, 315 mm. (width of disc 160, 220 mm.). 



St. WS 77. 12. iii. 27. 51 01' S, 66° 31' 30" W. Commercial otter trawl, 110-113 m.: 1 female 

 specimen, 440 mm. (width of disc 320 mm.). 



St. WS 78. 13. iii. 27. 51 01' S, 68° 02' W. Commercial otter trawl, 95-91 m.: 1 male specimen, 

 420 mm. (width of disc 310 mm.), 1 female, 460 mm. (width of disc 330 mm.). 



St. WS 79. 13. iii. 27. 51° 01' 30" S, 64 59' 30" W. Commercial otter trawl, 132-131 m.: 8 male 

 specimens, 305-550 mm. (width of disc 210-410 mm.), 13 females, 235-530 mm. (width of disc 



1 75-4°5 mm -)- 

 St. WS 80. 14. iii. 27. 50 57' S, 63 37' 30" W. Commercial otter trawl, 152-151 m.: 1 female 



specimen, 320 mm. (width of disc 230 mm.). 



St. WS 87. 3. iv. 27. 54 07' 30" S, 58°i6'W. Commercial otter trawl, 96-127 m.: 2 male 

 specimens, 215, 240 mm. (width of disc 150, 180 mm.). 



St. WS 90. 7. iv. 27. 13 miles N 83 E of Cape Virgins Light, Argentine Republic. Commercial 

 otter trawl, 82-81 m. : 1 male specimen, 240 mm. (width of disc 160 mm.), 1 female, 180 mm. (width 

 of disc 120 mm.). 



St. WS 92. 8. iv. 27. 51 58' 30" S, 65°oi'W. Commercial otter trawl, 145-143 m.: 1 male 

 specimen, 150 mm. (width of disc 105 mm.). 



St. WS 94. 16. iv. 27. 50 00' 15" S, 64° 57' 45" W. Commercial otter trawl, 1 10-126 m. : 2 male 

 specimens, 150, 350 mm. (width of disc 98, 250 mm.). 



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

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



