104 PROCEEDINGS OF THE ACADEMY OF 



Anterior dorsal fin with nine or ten spines. Anal with two spines, the 

 second of which is large. Caudal lanceolated. 



The pharyngeal hones as well as the armature of the branchial arches have 

 been described as characteristic of the subfamily. There is no essential differ- 

 ence between those of the two genera of the group. 



Type Haploidonotus grunniens (Raf) 



Syn. Aplodinotus grunniens Raf., Journal de Physique, vol. lxxxviii. 

 Amblodon grunniens Raf. 

 Scicena oscula Les. 

 Scisena grisea Les. 

 Corvina oscula Cuv. et Vol. 

 Corvina grisea DeKay. 



Genus Pogonias Lacepede. 



Labrus sp. Linn. 



Pogonias Lacepede, Hist. Nat., vol. iii. p. 137. 



Pogonathe sp. Laefpede, Hist. Nat., vol. v. p. 121. 



Scisena sp. Lacepede, Mitchell. 



Labrus sp. Mitchell. 



Pogonias Cjtvier, Regne Animal, ed. i. vol. ii. p. 298. 



Pogonathua Bon. 



Body oblong ; subdorsal outline little decurved backwards. 



Head oblong ; dorso-nasal profile nearly regularly curved, or the sigmoidal 

 flexure obsolete. Snout high. Eyes anterior. Preoperculum entire. Chin 

 furnished with many filaments, and each ramus of the lower furnished inter- 

 nallv for most of its length with a row of distant ones. 



Teeth in a villiform band in each jaw. 



Anterior dorsal fin with ten spines. Anal with two ; the second large and 

 stout. Caudal subtruncated. 



This genus is very closely related to Haploidonotus, the only essential differ- 

 ential characters being the beard filaments of the chin and lower jaw, and per- 

 haps the form of the caudal fin. 



Type Pogonias fasciatus Lacepede. 



An additional representative of the subfamily of Haploidonotinse may per- 

 haps be found in the Chilotrema fasciatum of Tschudi.* That species has a 

 greater superficial resemblance to the Pogonias fasciatus than any other fish, 

 but bearing in mind the close resemblance of Haploidonotus to Corvina, we do 

 not even dare to positively assert that it belongs to the same subfamily.^ 



The following list will exhibit the number of species of the subfamily of 

 Haploidonotinre of the United States. As has been already remarked, the 

 genus Pof/onias, containing bearded species, with truncated caudal fins, are 

 marine, and found on the Atlantic coast, while the Haploidonoti, without 

 beards, and with lanceolated caudal fins, are found only in the larger fresh 

 water rivers and lakes. 



Genus Haploidonotus (Raf.) 



Haploidonotus grunniens Raf 



Aplodinotus grunniens Raf., Journal de Physique, &c, vol. lxxxvi i, p. 

 418. 

 Haploidonotus concinnus Gill. 



Amblodon concinnus Agassiz, American Journal of Science and Art, ser. 

 ii. vol. xvii. p. 307. 



* Tschudi Fauna Peruana. Ichthyologia, p. 13, tab. 1. 



[May, 



