1279 * 
Genus Chascanopsatta Alcock 
Chasoanopsetta Alcock ^ Journ# Asiatic Soc« Bengal, vol* 63, pt# 2, p. 14, 
1894. ('I^ype Ch asoanopsetta lugubris Alcock , monotypic.) 
Pelecanichthys Gilbert and Cramer, Proo* U. S. Nat. Mus., vol# 19, p. 432, 
1897# (Type Pelecanichthys orumenalis Gilbert and CraiTiOr , monotypic.) 
Trachypterophrys Fran^i, Abhandl* Kon. Bayer. Akad. Wiss., vol. 4, Suppl. 
Band 1, p. 60, 1910. (Type Trachypterophrys raptator Franz , monotypic.) 
Body elongate, slender, excessively compressed, tapers gradually 
to caudal. Head large, oblique. Snout short, pointed. Eyes elliptical, 
upper advanced. Maxillary, premaxillary and palatopterygoid 3 very slend¬ 
er bony rods, parallel and closely juxtaposed greater part of length. 
Mandible extended forward far beyond snout tip, rami very slender and 
flexible, rotate inward so teeth of 2 rami meet and interlock in closed 
mouth. Mandibular membranes volminous, fcrra gular pouch. Angular bone 
forms slender extension beyond mandibular articulation and hind edge of 
opercle. Teeth minute, uniform. Preopercle edge free. No gill rakers. 
Scales exceedingly minute. Lateral line axial, conspicuous, continuous, 
with low, short anterior arch. Dorsal and anal long, former beginning on 
snout. Caudal lanceolate. Caudal peduncle short. Paired fins small. 
