NATURAL SCIENCES OF PHILADELPHIA. 167 



11. Blenmcottus globiceps. 



Syn. Oligocottus globiceps Girard. 



XIV. Ceratocottus Gill. 



One of the characters assigned to this genus in the original remarks on it 

 was the absence of vomerine teeth. On subsequent observation, they were 

 detected. The diagnosis must be consequently modified. It is much regret- 

 ted that such an error should have occurred. 



AGONOIDS* 



XV. Anoplagonus Gill. 



This genus is allied to Aspidophoroides, but is readily distinguished by the 

 presence of vomerine and palatine teeth. 



12. Anoplagonus htebmis. 



Syn. Aspidophoroides inermis Giinther. 



* The family of Agonoids maybe divided into four groups, the Podotheci, Hypsagoni, 

 Agoni and Anaplogoni. It may be further divided as follows: 



Group I. PODOTHECI. 

 Genus Podothecus Gill. 



Group II. HYPSAGONT. 



Hvpsagonus Gill. 

 Typt*. Hypsagonus quadricornis Gill. 

 Syn. Aspidophorus quadricornis Cuv. et Yal. 



Group III. AGONI. 

 Hippocephalus Swainson. 

 Type. Hippocephalus Japonicus Gill. 

 Syn. Cottus Japonicus Pallas. 



Agonus stegophthalmus Tilesiug. 



Agoxus Bloch. 

 Type. Agonus cataphractus Bloch. 



Paragonus Gill. 

 Type. Paragonus acipenserinus. 

 Syn. Agonus acipenserinus Tilesius. 



Agonopsis Gill. 

 Type. Agonopsis chiloensis Gill. 

 Syn. Aspidophorus chiloensis Kroyer. 



Leptagonus Gill. 

 Type. Leptagonus spinosissimus Gill. 

 Syn. Aspidophorus spinosissimus Kroyer. 



Brachvopsis Gill. 

 Type. Brachyopsis rostratus Gill. 

 Syn. Agonus rostratus Tilesius. 



Group IV. ANOPLAGONI. 

 Anoplagonus Gill. 

 Type. Anoplagonus inermis Gill. 

 Syn. Aspidophoroides inermis Giinther. 



Aspidophoroides Lac. 

 Type. Aspidophoroides monopterygius Lac. 



1861.] 



