488 PROCEEDINGS OF THE ACADEMY OF [July, 



tal, membrane forming a rather broad fold across isthmus. Rakers 

 very short, about 25? hard denticles, much shorter than filaments. 

 Filaments h of orbit. Isthmus compressed narrowly and rounded. 

 Three branchiostegal rays. 



Scales small, cycloid, in series directed obliquely forward on middle 

 of side above and below lateral line. Scales on back and on ventral 

 region very much smaller and crowded. Ventral region of body 

 strongly compressed and forming a cutaneous keel. Head naked ex- 

 cept occiput, scaly region beginning over middle of orbit and much 

 smaller than on rest of body. Fins naked, except iDase of caudal which 

 is scaly. Lateral line of rather large simple tubes, continuous, sloping 

 down till over ventral, then more or less straight to base of caudal. 



Dorsal fin small, posterior, and its origin about last if in space be- 

 tween front end of mandible and base of caudal or a trifle posterior to 

 origin of anal. Anal with anterior rays elevated and base elongate, 

 last ray reaching nearly half way to base of caudal. Caudal damaged. 

 Pectoral inferior, upper rays enlarged, and first developed ray longest 

 and reaching nearly to origin of ventral, other rays graduated down. 

 Origin of ventral about opposite posterior margin of opercle. Ventral 

 about midway in its insertion between anterior margin of eye and base 

 of caudal, and reaching about half way to origin of anal. 



Color in alcohol with more or less silvery everywhere, and back pale 

 brownish. Snout dusky. Iris brassy. A dusky blotch at base of 

 caudal. An interorbital band of deeper brown than body color, with 

 two lines of deeper color. Also a similar postocular band extending 

 down till close to posterior rim of orbit where it ends abruptly. Fins 

 pale brownish-white, dorsal and caudal a shade darker than others. 

 Pectoral axil dusky. 



Length 6H inches. 



Type No. 13,931, W. I. A. P. Borneo. 1898. Dr. W. H. Furncss. 



Only the type is known to me. 



This species is closely related to Macrochirichthys macrochir (Valen- 

 ciennes), but differs at once in the postocular transverse dark cranial 

 bands. Macrochirichthys uranoscopus Bleeker has been united with M. 

 macrochir, and it also lacks these bands. 



(Named for my friend Prof. John 0. Snyder, of tlie Iceland Stanford 

 Junior University, well known as a writer on Japanese fishes.) 



MONOPTERID^. 

 43. Monopterus albus (Zuiew). 

 ("Lunong" of the Dyaks.) 

 Six examples from Marudi, a swamp at the mouth of the Baram, 



