400 THE PLAGIOSTOMIA. 



Taenium lymma Muller & Henle, 1841, Plagios., p. 171, pi. 55, f. 3; Dum6ril, 18G5, Elasm., p. G19; 



GtJNTH., 1870, Cat. fishes Brit, mus., 8, p. 483; Klunzinoer, 1871, Syn. fishe, 2, p. 241; Gunther, 



1910, Siidsee fische, 2, p. 495. 

 Taeniura lymna T. Cantor, 1849, Malay, fishes, p. 430. 

 Discobatis marginipinnis Maclay & Macleay, 1880, Proc. Linn. soc. N. S. W., 10, p. 670, pi. 46, f. 7-15; 



JoRD. & Seale, 1906, Bull. U. S. fish, comm., 25, p. 183. 

 Discotrijgon marginipinnis Fowler, 1910, Proc. Acad. nat. sci. Phil., 62, p. 462. 



Disk subcircular, snout not produced. Mouth small, width about one 

 third of the distance from the end of the snout, with a fringed velum and two 

 papillae at the bottom. Teeth small, unequal, tessellate, with transverse ridges, 

 or sharp cusps on males. Chin papillose. Cranium prominent convex longi- 

 tudinally, descending sharply forward; foramen in front broad and rounded, 

 narrow or closed between the orbits on the crown. Pectorals angled posteriorly. 

 Ventrals elongate, subtriangular, anterior rays much longer than posterior, 

 angles rounded. Tail longer than body, spine about mid length, supracaudal 

 fin absent, or rudimentary, origin of subcaudal shghtly in front of spine, depth 

 greater than that of the muscles above it. Skin smooth. 



Greyish brown with rounded spots of blue irregularly scattered over back 



and fins. 



Total length I65, body to pores 62, and greatest width 7 inches. 



Red Sea; Singapore; Mauritius; Fiji Islands. 



Taeniura melanospila. 



Taeniura melanospilos Bleeker, 1853, Nat. tijds. Ned. Ind., 4, p. 513; Dum6ril, 1865, Elasm., p. 620. 

 Taeniura melanospila Gunth., 1870, Cat. fi.shes Brit, mus., 8, p. 484; Klitnzinger, 1871, Syn. fische, 2, 

 p. 242. 



Disk broader than long, obtuse in front. Snout length six times in the 

 greatest width of the disk. Mouth curved, two papillae at the bottom. Skin 

 rough, a dorsal series of tubercles. Tail rough, depressed in the basal portion, 

 little longer than the disk. Spine inserted little behind the first third of the 

 tail, subcaudal fin deeper, extending from below the insertion of the spine to 

 the end of the tail. 



Back greenish grey, with numerous rounded spots of blackish. 



Batavia. 



Taeniura meyeni. 



Taeniura meyeni MOller & HenlE; 1841, Plagios., p. 172; Dum^ril, 1865, Elasm., p. 620; GtJNTH., 

 1870, Cat. fishes Brit, mus., 8, p. 483. 



Disk a little broader than long; margins and fins rounded. Upper eyeUd 

 shghtly produced. Mouth straight; teeth with transverse groove as in Dasy- 



