DASYIJATUS BENNETTI. 383 



Dasybatus latus. 

 Plate 32, fig. 1-2. 



Trygon lata Garman, 1880, Bull. M. C. Z., 6, p. 170. 



Dasibalis lata Garman, 1882, Bull. 16, U. S. nat. mus., p. 67. 



Dasyatis thetidis Waite, 1899, Mem. Austr. mus., 4, p. 46. 



Dasyatis sdera Jenkins, 1904, Bull. U. S. fish, comm., 22, p. 421, pi. 1, f. 2; Jord. & Everm., 1905, 



Bull. U. S. fish comm., 23, p. 47, pi. 4, f. 2. 

 Dasyatis lata Jord. & Everm., 1905, Bull. U. S. fish, comm., 23, p. 47. 

 Trygon lata Gunther, 1910, Siidsee fische, p. 493. 



Disk subquadrangular, one fourth wider than long, very blunt angled at the 

 end of the snout which is produced in a rounded prominence. A line crossing 

 the widest portion of the disk passes nearer to the head than to the shoulders. 

 Mouth somewhat curved, with six (5-6) papillae. Ventrals short, subtruncate. 



Tail more than twice the length of the body, without fold or keel above, 

 with a long narrow fold below, terminating in a keel extending to the end, with 

 top and sides armed with small tubercles and an irregular series of broad-based 

 tubercles along each side. A pair of large erect compressed tubercles in front 

 of the caudal spine, a single tubercle above the middle of the pelvic arch, three 

 larger, elongated tubercles the points of which extend backward above the 

 middle of the shoulder girdle. Differs from D. marinus in the prominent snout, 

 in narrowness of hinder part of disk and in shape of the vertebral tubercles. 



Length of body 16, of tail 35.3, and width of disk 20.5 inches. 



Light olive-brown on the back; white beneath. 



Collected by Andrew Garrett at the Hawaiian Islands. 



Dasybatus bennetti. 



Trygon bennetti Muller & Henle, 1841, Plagios., p. 160, pi. 53; Dumeril, 1865, Elasm. 595; Gunth., 



1870, Cat. fishes Brit, mus., 8, p. 480. 

 Trygon carnea Richardson, 1846, Rept. Brit, assoc. adv. sci. for 1845, p. 197. 



Disk subrhomboid, nearly as broad as long, anterior margins nearly straight, 

 until near the tip of the snout which is produced in an angle of less than 90°, 

 outer angles and hind margins broadly rounded, hinder angles more narrowlj^ 

 rounded, mouth waved; teeth of male flat. Eyes and spiracles moderate. Tail 

 three times as long as the body, with a serrated spine at the end of the anterior 

 sixth of its length, and with a narrow fold below of less than one sixth of the caudal 

 length. Skin smooth in young, on large individuals rough with a pavement of 

 scales and tubercles on the middle of back and tail. Spines less closely set 



