PLATE VIII. 



NOTURUS OCCIDENTALIS Gill. 



Fig. 1. Side view of iisli, sliowing the peculiar lorm of the adipose, dorsal, and caudiil tins. 

 Fig. 2. View of the dorsal surface, sbowiujj the broad head with its T-shaped depressiou. 

 Fig. 3. View of the inferior surface of the head. 



Fig. 4. The open mouth ; the teeth are robust. The lateral ex.teusiou of the intermaxillary baud of teeth is uot a 

 generic character. 



