^81 
f 
Calloptilum RICHARDSON, Zool. Voy. Sulphur , Ichth., p, 94, 
1844. (Type Calloptilum mirum RICHARDSON, monotypio.) 
Asthemirus TICKELL, Journ. Asiatic Soc. Bengal, vol. 34, p. 
32,1865. (Type Asthenurus atripinnis TICKELL, monotypic.) 
'‘'IT T r T " T "" 1 ' ' ' 
Body moderately long, fusiform, compressed posteriorly. Head 
small, somewhat compressed. Snout short. Eyes lateral. Mouth small 
oblique, terminal, jaws subequal. Teeth movable, minute, in jaws and 
on vomer, none on palatines. Gill openings very wi.de, membfanes united 
below throat, not joined to interorbital. No pseudobranchiae. 
Branchiostegals 7. Air bladder large. Two wide pyloric coeca. Scales 
cycloid, deciduous, moderate. No lateral line. Fins without spines. 
Two dorsals; first of single long occipital ray; second long, begins 
opposite anus at about end of first third in body length, formed of, front 
and hind elevated portion connected by series of low short detached spines. 
With age both dorsal and anal more depressed medially or middle ray obsolete. 
Anal similar. Caudal more or less emarginate, well separated from vertical 
fins. Pectorals small, midway in body height. Ventrals jugular, their 
origins apposed, of 5 rays with outer extremely elongate. 
Small tropical coast fishes, also living in the open sea, from 
the surface to 500 meters depth. 
