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PROCEEDINGS OF THE NATIONAL MUSEUM. 



Family 8ILURID.E. 



9. GLANIS ASOTUS (Linnaeus). 



Anal tin united to tlie ciuidul. 



Head 5; depth 5.25; snout 3.3 in head; eye 3 in .snout; interorbital 2.5 

 in head. D. 4; A. 81; P. 1, 12; V. 11; C. 16. Body spindle-shaped, 

 anteriorly depressed and posteriorly compressed; body deepest a little 

 posterior to dorsal, from which point it slopes obliquely down to the 

 broad depressed snout; mandible depressed like the snout, projecting; 

 body posteriorly depressed and tapering gradually to the tail; inter- 

 orbital space flat; a well-marked median dorsal groove from occiput to 

 middle of anal. 



Teeth in broad A'illiform bands in both jaws and in a broad continu- 

 ous band on vomer; maxillary barbels long, reaching past end of ven- 

 tral spine; mandibidar tentacles short, equaling interorl)ital width; 

 eye small, diameter -1 times in interorbital width; snout short, rounded, 

 3.3 in head; lateral line following outline of back, continuous from 

 above oi)ercle to base of caudal. 



Fig. 3.— Glanis asotus. 



Dorsal short, of ■4 rnj^, placed about midway ])etween insertion of 

 pectorals and ventrals, height aliout 3 in head; pectoral inserted below 

 angle of opercle, the longest rays reaching slightly past vertical from 

 (lor.sal; pectoral spine strong, serrated on outer edge, length equal to 

 height of dorsal; ventrals situated before anus, obtusely pointed, long- 

 est rays exceeding pectoral spine; anal long, beginning at anus and 

 extending to the caudal to which it is united, height equal to that of 

 dor.sal; caudal 2 in head, truncate. 



Coloration above, brownish-olive; tins, the same; below, yellowish- 

 white, the mandible, sides below pectoral, and breast along gill-open- 

 ings tinely brown-.spotted. 



One specimen, 12 inches long, from Formosa, without indication of 

 locality, but doubtless from the Tan Sin River at the capital, Taihoku. 

 The generic name GJcmis Agassiz is equivalent to l\irasilurus Bleeker. 



10. PLOTOSUS ANGUILLARIS (Bloch). 

 One specimen, No. 12U71, from Giran. 



