RAIA Ql'ADRIMACULATA. 323 



Type, nearly 8 inches in length, from Davis Straits. 



In his later publication Lutken figures an adult male which differs so much 

 from the foregoing as to call for a separate description. Of a specimen 21 inches 

 in total length the outlines bear a considerable resemblance to those of 

 Malacorhina mira on Plate 27, fig. 3, in that the anterior margins are somewhat 

 deeply notched opposite the spiracles. Near the rostral cartilage the outline 

 is concave. The portion of the pectorals opposite the head is narrow while 

 the remainder behind it is very broad and rounded. The snout is short and is 

 produced in a right angle. Back rough along the anterior margins, spines 

 larger opposite the head on the pectorals and on the rostral cartilages; strong 

 spines occur on the orbital ridges and above the spiracles, in a triangular group 

 from the shoulder girdle forward and in a broad band of four or five somewhat 

 irregular series from the girdle backward along the middle of the body and on 

 the top of the tail; smooth below. Teeth in 34 rows. Tenacula of the male 

 numerous and strong. 



Back light greyish brown; below brownish. 



Apparently a close ally of R. erinacea. 



Raia qtjadrimaculata. 



Raia quadrimaculata Risso, 1826, Hist, nat., 3, Poissons, p. 150; Bonaparte, 1841, Icon. Fauna Ital., 



Pesci, pi. 65, f. 2; Pietschmann, 1906, Ann. k. k. nat. Hofmuseums, 21, p. 125, pi. 6. 

 Raia aslerias Couch, 1S3S, Mag. nat. hist., 2, p. 72, fig. 

 Sandy ray Couch, 1838, Mag. nat. hist., 2, p. 71; fig.; Yarrell, 1839, Brit, fishes. Suppl., p. 69; Couch, 



1807, Brit, fishes, 1, p. 115, pi. 28. 

 Raia radula Yarrell, 1839, Brit, fishes., Suppl., p. 69; Thompson, 1856, Nat. hist. Ireland, 4, p. 262. 

 Raia falsavela Bonaparte, 1841, Icon. Fauna Ital., Pesci, p. 489, pi. 65, f. 1; Dumeril, 1S65, Elasm., p. 



549; Doderlein, 1884, Man. ittiol. Medit., 3, p. 202. 

 Raia spinosa Yarrell, 1841, Brit, fishes, ed. 2, 2, p. 574. 

 Raia sp. McCoy, 1841, Ann. mag. nat. hist., 6, p. 405. 

 Raia circularis Malm, 1857, Ofvers. Vet. akad. Forhl., p. 187; Dumeril, 1865, Elasm., p. 536; Collett, 



1875, Norges fiske, p. 214; Gunth., 1870, Cat. fishes Brit, mus., 8, p. 462; Day, 1884, Brit, fishes, 



2, p. 34S, pi. 174. 

 Amblyraia circularis Malm, 1877, Goteb. och Bohus fauna, p. 608. 



The outlines of this species resemble those of R. diaphanes Plate 22, fig. 1; 

 there is also a considerable resemblance to the small species, R. naevus, but the 

 snout is sharper and more projected and the tail is shorter. All of the angles 

 are rounded and the anterior margins are waved. Interorbital width and length 

 of orbit equal. Teeth pointed, in about 80 rows. Back covered with small 

 spines; a series of small tubercles around each orbital ridge. Three to five rows 

 of small tubercles in front of the shoulder girdle, in the middle, the median row 

 of which is continued backward by scattered thorns; the lateral series also are 



