130 



ADDITIONS TO THE LIBRARY. 



Haldeman, S. S. Monograph of the Fresh Water Univalve 

 Mollusca. No. 6. 8vo. Pam. Philadelphia. 1843. Author. 



N. American Review for July. 1843. 8vo. Boston. By 

 Exchange. 



July 5, 1843. 



Regular meeting — Dr. C. T. Jackson, Vice President, in 



the Chair. 



Mr. W. O. Ayres, of E. Hartford, Conn., presented, 

 through Dr. Storer, the following general description of a 

 new species of Leuciscus; observing that he should, at 

 some future time, furnish the Society with a detailed ac- 

 count, together with a figure of the species, for publication 

 in the Journal of the Society. 



Leuciscus nasutus. — Body elongated, rounded anteriorly, com- 

 pressed towards the tail. Head destitute of scales, pointed. Mouth 

 small, semicircular, situated beneath the projecting snout. Color 

 above and on the sides, very dark brown ; beneath light, almost 

 white. Nostrils anterior to the upper portion of the eye. Lateral 

 line nearly straight. Dorsal and anal fins trapezoidal ; dorsal sit- 

 uated posterior to the ventrals. Pectorals and ventrals rounded. 

 Caudal lunate. Length of the largest specimen hitherto obtained, 

 five and a quarter inches. Inhabits rapid streams. Connecticut 

 and Massachusetts. 



Dr. Storer remarked that he had lately obtained a flat- 

 fish, which was very rarely taken in # our waters, and had 

 not as yet been described. Its specific characters are as 

 follows : 



Platessa glabra. — Body perfectly smooth. Color above greyish, 

 mottled with dark brown. Dorsal, anal and caudal fins, reddish 

 yellow, with well-marked, nearly black spots, more or less oval, 



