28 PROCEEDINGS OP THE ACADEMY OF 



This is, indeed, a very short catalogue, but I hope it will prove worthy of pre- 

 sentation if it shall serve for the beginning of one more extended ; for. "on theo- 

 retical grounds, I am strongly of the opinion that many more changes of color 

 occur among the stars than have been observed and recorded. 



February Y~tth. 



Vice-President Bridges in the Chair. 

 Eighteen members present. 

 The following was presented for publication : 

 Catalogue of the N. American Scirenoids. By Theo. Grill. 

 The Committee on Proceedings laid on the table the published Num- 

 ber for October, November and December, 1862. 



February 2-ith. 



The President, Mr. Lea, in the Chair. 

 Seventeen members present. 



On Report of the respective Committees, the following were ordered 

 to be published : 



Catalogue of the North American SCIJENOID Fishes. 



BY THEODORE GILL. 



Since the publication of the several articles on the Scisenoids of the Eastern 

 Coast of the United States,* the additional facilities which I have enjoyed 

 have enabled me to detect some errors, adopted from previous laborers, in the 

 nomenclature of those species, and I have been also led to propose some 

 modifications in the arrangement of the family itself. t 



A. Lower jaw received within the upper (vertebra 10 | 14 

 -14 + X.) 

 B. Teeth of both jaws developed ; upper pharyngeal 

 bones three. 



C. Lower pharyngeal bones completely separated Solemn-^:. 



* Chin smooth, 

 t Caudal lanceolate ; head above very broad, 

 nearly flat between eyes ; preoperculum 



behind crest cavernous and multipartite Stelliferus. 



ff Caudal entire or sinuated ; head narrow, trans- 

 versely convex ; preoperculum behind crest 

 flat. 



1. Body and head oblong, compressed ; anal 



under posterior half of second dorsal Bairdiella. 



2. Body and head elongated ; anal under middle 



of second dorsal Scisenops. 



** Chin with a single moderate barbel Menticirrhus. 



*** Chin with minute filaments Micropogon. 



* Catalogue of the Fishes of the Eastern Coast of North America, pp. 32, 33. (Feb. 14, 1861.) 

 Revision of the Genera of North American Scioeninae in " Proc. Acad. Nat. Sci., Philada.," 

 1S61, pp. 79 89. 

 On the LioBtominse, op. cit., 1861, pp. 89 93. 

 On the Haploidonotinse, op. cit., 1801, pp. 100 105. 

 f Note on the Scisenoids of California, op. cit., 1S62, pp. 16 18. 



[Feb. 



