NATURAL SCIENCES OF PHILADELPHIA 35 



sects, and it had also been used by Zetterstedt for a genus of Diptera, at nearly 

 the same period as Swainson. A species of the same genus is also described by 

 Sir John Richardson, in his Report " on the Ichthyology of the seas of China and 

 Japan," as Ilisha abnormis. This name is attributed to Gray in a British 

 Museum catalogue ; we have never seen a catalogue in which the name occur?. 

 It wa9, indeed, probably manuscript: we do not therefore know what Dr. Gray 

 intended by the name. As Richardson suggests, the name appears to be 

 "evidently taken from the specific appellation of one of Buchanan Hamilton's 

 Clupea.'" But the Clupea ilisha of that naturalist is a true Alausa. If that species 

 was intended by Gray as the type of his genus, it should be regarded as a mere 

 synonyme of Alausa. If, however, the generic name of Ilisha was first pub- 

 lished by Richardson, perhaps it will have to be retained in his name, for 

 either the whole genus, or that section inhabiting the old world, and embracing 

 species whose body is more slender, and which have a less gibbous abdomen 

 than the species of South America. As Valenciennes was the first to well re- 

 strict the genus and illustrate its affinities, we prefer to modify his generic 

 name for the subfamily. 



Group CLUPEjE Gill. 



Anal fin little longer than high, commencing some distance behind the ver- 

 tical of the posterior rays of the dorsal, and nearly intermediate between the 

 ventral and caudal fins. 



A. 



With no spurious dorsal or anal fins. 



Genus I. Clupea (Linn.) Val. 



Syn. Clupea Val. Hist. Nat. des Poissons, vol. xx., p. 28, 1847. 



Body elongated and slender. Minute teeth on the intermaxillaries and near 

 the symphysis of the dentaries. Supra-maxillaries delicately crenulated. More 

 evident teeth in a longitudinal band on the vomer, and on the tongue. Several 

 readily deciduous teeth on the external borders of the palatines. 



Type. Clupea harengus Linn. 

 Syn. Clupea harengus Val. Hist. N. des Poissons, vol. xx., 30. 



Genus II. Sardinella Val. 



Syn. Sardinella Val. Hist. Nat. des Poissons, vol. xx., p. 28, 1847. 



Body elongated and slender. Minute villiform teeth on the anterior extremity 

 of the palatine bones, on the internal borders of the pterygoids, and on the 

 tongue. Supramaxillaries occasionally scarcely crenulated near the extremities. 



Type. Sardinella aurita Val. Hist. Nat. de3 Poissons, vol. xx., p. 263. 



Genus III. Rogenia Val. 



Syn. Rogenia Val. Hist. Nat. des Poissons, vol. xx., p. 340, 1847. 



Body elongated and slender. Very minute and almost imperceptible teeth 

 on the intermaxillaries and dentaries ; stronger ones on the vomer, palatines, 

 pterygoids and tongue. 



Type. Rogenia alba Val. 

 Syn. Clupea alba Yarrell. 



Genus IV. Clupeonia Val. 



Syn. Clupeonia Vol. Hist. Nat. des Poissons, vol. xx., p. 345. 



Teeth only on the pterygoids, and in a longitudinal band on the tongue. 



Type. Clupeonia Jussieui Val. 

 Syn. Clupanodon Jussieui Lac. Hist. Nat. des Poissons, vol. v, pp. 471, 474. 



1861.] 



