CONTENTS OF VOL. IV. NO. III. 



Art. XXTII. — Enumeration of the Fishes of Brookhaven, Long Island, 

 with Remarks upon the Species Observed. By William 0. Ayres. 265 



Art. XXIV. — Descriptions of Four Species of Fish from Brookhaven, 

 Long Island, all of which are believed to be new. By William O. Ayres. 293 



Art. XXV. — Descriptions of the Fishes of the Ohio River and its tribu- 

 taries. By Jared P. Kirtland, M. D 303 



Art. XXVI. — Catalogue of the Marine, Fluviatile and Terrestrial Shells 

 of the State of Maine and adjacent Ocean. By J. W. Mighels, M. D. 308 



Art. XXVII. — Descriptions of Six Species of Shells Regarded as New. 

 By J. W. Mighels, M. D 345 



Art. XXVIII. — Monograph of the Species of Pupa found in the United 

 States ; with Figures. By Augustus A. Gould, M. D. . . . 350 



Art. XXIX. — Descriptions of Two Undescribed Species of North Amer- 

 ican Helices. By Amos Binney 360 



Art. XXX. — Observations on the External Characters and Habits of the 

 Troglodytes Niger, Geoff. By Thomas S. Savage, M. D., Corresponding 

 Member of the Boston Society of Natural History — and on its Organi- 

 zation, by Jeffries Wyman, M. D . 362 



