228 CALIFORNIA ACADEMY OF SCIENCES. 



Over forty specimens .16-. 30 m. long. Para. Agas- 

 siz and Bourget. 



162. Doras urauoscopus. 



Doras uranoscopus Eigeuru. & Eigenm. Proc. Cal. Acad. 2d Ser. 



i, 159, 1888 (L. Hyanuary). 

 Habitat: Lake Hyanuary. 



Body rather heavy, depressed, depth below the dorsal 

 spine f as great as the width; caudal peduncle rather 

 slender, wider than high. Width of the head 1^ in its 

 length; top of the head to near tip of snout, opercle, 

 preopercle, suborbital and prenasal bones striate, the 

 striae becoming broken up into granules in places, which 

 on the dorsal plate are spine-like, similar to those on 

 the lateral scutes. Dorsal plate not continued behind 

 the anterior margin of the dorsal spine; with a down- 

 ward directed process. Interorbital area flattish; poste- 

 rior portion of the head obtusely keeled. Fontanel 

 clavate, not extending to the posterior margin of the 

 eye ; an elongate diamond-shaped depressed area behind it. 



Eye 3i-4 in the snout, 8i in the head, 3 in the inter- 

 orbital; eye looking upward more than sideward. 



Maxillary barbels extending to posterior 4th of hu- 

 meral process; postmentals to opposite the insertion of 

 the inner pectoral ray; mentals about f as long as the 

 postmentals. 



Snout pointed, its width at the rictus 2i in the head. 

 Upper jaw projecting; teeth villiform, the intermaxillary 

 band about 6 times as wide as deep. 



Gill-opening extending to a point midway between 

 upper angle of preopercle and the eye. 



Lateral scutes high, the 3rd hook-bearing one the 

 highest, If in the length of the head, the scutes de- 

 creasing in height to the last, the median hooks increas- 

 ing in size to the caudal peduncle, the exposed surface 

 of those in front of the peduncle thickly set with small 



