85 
Body ovoid, well compressed. Head moderate, compressed. Snout short. 
Eye large. Teeth minute, in jaws and on vomer. Left gill cover overlaps right 
and with extra or seventh small branchiostegal.(6 onright side). Scales small, 
* 
smooth. Lower ends of clavicles form together single bony spine. Small tubular 
papilla, with an apical pore, close behind opercle and level with eye center. 
X 
Lorsal and anal each with 23 rays. Pectoral rays 28. Ventral rays 5, fin 
inserted close before dorsal origin. 
Closely resembles Platytr octes but differs in the presence of ventral fins, 
flat cranium, smooth scales, single clavicular* spine and longer dorsal and anal 
fins. 
Platytroctegen mirus Lloyd 
Platytroctegen mirus LLOYD, Mem. Indian Mus., vol.2. No.3, Aug. 1909, p.145, 
pi.44, figs. 1 - 1 a. Bay of Bengal, 500 fathoms. 
Depth 2 3/4; head 3 1/4, width 1 4/5. Snout 4 3/4 in head from snout tipj 
eye 3, greater than snout; maxillary would reach l/3 (?) in eye, expansion 
2 l/4 in eye, length 2 3/5 in head from snout tip; teeth minute, uniserial, on 
✓ 
premaxillaries, maxillaries and dentaries; few small teeth on vomer, none on 
palatines; interorbital low, nearly flat. Sill rakers long as gill filaments, 
l/3 of eye. 
Scales very small, smooth. 
D. 23, inserted little before anal origin, fin heigth 2 l/2 in total head 
length; A. 23, fin height 4; caudal 1 9/l0, deeply forked, slender lobes 
pointed; least depth of caudal peduncle 5 l/8; pectoral 4 l/5; ventral 5. 
CBlack. Length 130 mm. (Lloyd.) 
Indian Ocean. 
