AETOMYLAEUS MILVUS. 435 



disk twice as broad as long 



blue cross-bands, ca. .">, disappearing with age nichofii (page 436) 

 Origin of dorsal behind ends of ventral bases 

 back smooth 



disk less than twice as broad as long 



brownish with a net-work of black, anteriorly in bands 



vespertilio (page 437) 



Aetomylaeus maculatus. 

 Plate 36, fig. 1-3; Plate 73, fig. 3 (skeleton). 



Mylipbatis maculatus Gray & Hardwicke, 1834, 111. Ind. zool., 2, pi. 101; Muller & Henle, 1841, 

 Plagios., ]). 17S; Bleeker, 1852, Verh. Bat. gen., 24, Plagios., p. 84; Dume-ril, 1865, Elasm., p. 

 639; Gunth., 1870, Cat. fishes Brit, mus., 8, p. 490; Annandale, 1909, Mem. Ind. mus., 2, p. 53. 



Aetomylaeus maculatus Garman, 1908, Bull. M. C. Z., 51, p. 252. 



Width of disk about twice the distance from snout to vent. Pectorals 

 as long as wide, outer ends curved, acute, anterior margin convex, posterior 

 concave. Head broad, convex transversely, angles rounded, concave in front 

 of the fontanel. Fontanel broad, wide and rounded at the hinder end. Snout 

 (rostral fins) bluntly pointed, narrower than the skull, not connected by rays 

 along the side of the head with the pectorals. Eye moderate, pupil erect. 

 Spiracles large, hardly visible from above. Teeth in the median row five to 

 six times as broad as long. Ventrals longer than broad, inner margin short, 

 hinder oblique, angles rounded. Dorsal small, rounded above, hind margin 

 nearly vertical, a short free margin behind the base ends in a right angle, origin 

 little behind the ends of the bases of the ventrals. Tail more than four times as 

 long as the body. A specimen of about twenty-seven inches in length measures 

 82 in width, 4| from snout to vent and 22^ inches from vent to end of tail. 

 Skin rough with small tubercles or spines, in a dorsal area on the young. No 

 horn on the orbit. No caudal spine. 



Back brown with dark-edged rounded spots of whitish posteriorly ; white 

 below; tail indistinctly banded with brown and darker. 



Indian Seas; East Indies; Penang. 



Aetomylaeus milvus. 



Myliobatis milvus Muller & Henle, 1841, Plagios., p. 178; Bleeker, 1852, Verh. Bat. gen., 24, Plagios., 



p. 87; Dumeril, 1865, Elasm., p. 638; Gunth., 1870, Cat. fishes Brit, mus., 8, p. 491. 

 Myliobatis vultur Muller & Henle, 1841, Plagios., p. 179; Dumeril, 1865, Elasm., p. 640. 

 Myliobatis oculeus Richardson, 1846, Rept. Brit, assoc. adv. sci. for 1845, p. 198. 

 Aetomylaeus milvus Garman, 1908, Bull. M. C. Z., 61, p. 253. 



