56 CALIFORNIA ACADEMY OF SCIENCES. 



a free margin. Maxillary barbels two; mouth inferior. 

 Each jaw with several series of strong teeth. Opercle and 

 preopercle with numerous strong spines. Caudal rounded. 



34. Miuroglanis platycephalus sp. nov. 



Type, No. 8172; oue specimen .017 m. Jutaby. James, Thayer & 

 Talisman. 



Body short, compressed and rather deep. Head greatly 

 depressed, wider than long. Eye large, lateral, placed 

 behind the angle of the mouth. 



Mouth sub-inferior, the upper jaw projecting slightly. 



Upper maxillary barbel scarcely extending to the gill 

 opening; no nasal or mental barbels. 



Opercular and preopercular patches of spines united. 



Origin of the dorsal little behind that of the anal; its 

 distance from the tip of the snout somewhat less than twice 

 its distance from the tip of the caudal. 



Head 51; D. 10; A. 15. 



SUMMARY. 



S]iecies. Varieties. 



Silurida3 232 13 



Argiida? 7 



CailichthyidcB 25 



Loricariidse 150 3 



Bunocephalida; 15 



Pygididse 34 1 



Total 463 17 



