40 Description of a New Genus of 



Head conical in profile, compressed, with the sides posteriorly 

 sloping slightly outwards; the supra-occipital (interparietal Cuv.) 

 is extended backwards in a triangular prolongation, whose apex 

 is emarginated, and receives the point of a hastate buckler 

 extending from the dorsal fin ; the bones of the head are 

 covered by a smooth skin through which the wrinkles of the 

 skull are apparent. 



^t/es large, and almost entirely lateral. 



£arhles eight, consisting of two nasal, two maxillary,* and 

 two pairs behind the lower jaw. 



JBranchial apertures large and continuous under the throat. 



Mouth moderate, with the gape subquadrate : lower jaw 

 shorter than the upper. 



Teeth villiform, in a broad band on both the intermaxillaries 

 and dentary. 



Tongue large, attached by the edges to the floor of the 

 mouth. 



Lateral line straight, extending to the caudal. 



Dorsal subquadrate, higher than long. 



Adipose fin rather small, above posterior portion of anal. 



Anal rather long, decreasing posteriorly. 



Pectorals triangular, with the first ray a stout spine. 



Caudal forked or lunate, with the lobes equal and pointed 



Synecho^lanis Beacllei, Gill. 



' The dorsal outline declines very gradually to the adipose, and 

 from thence rather more rapidly to the region of the caudal 

 peduncle behind the anal fin; the peduncle is consequently 

 quite slender. 



The head is conical in profile, and of small size ; it 

 forms between a fourth and fifth of the total length from the 

 snout to the concavity of the caudal fin ; its greatest breadth is 

 less than three quarters of its length. The eyes are large and 

 oval, and the diameter of the orbit is little less than a third of 

 the length of the head. The distance from the snout is nearly 



