COMMUNICATIONS. 



I. EDWARD NORTON. Description of Mexican Ants noticed in the 

 American Naturalist, April, 1868. Illustrated by 11 cuts. 

 [Communicated April 6, 1868. Author's copies issued July, 

 1868. Regular issue, March, 1870]. pp. 1-10. 

 II. HORATIO C. WOOD, Jr. On the Phalanges of the United States 

 of America. Illustrated by 16 cuts. [Communicated Dec. 9, 

 1867. Author's copies issued Aug., 1868. Regular issue, 

 March, 1870]. pp. 10-40. 



III. A. S. PACKARD, Jr. On Insects Inhabiting Salt Water. Illus- 



trated by 6 cuts. [Communicated Dec. 7, 1867. Author's 

 copies issued April, 1869. Regular issue, March, 1870], pp. 

 41-51. 



IV. A. E. VERRILL. Synopsis of the Polyps and Corals of the North 



Pacific Exploring Expedition, under Commodore C. Ringgold 

 and Capt. John Rogers, U. S. N., from 185$ to 1856. Col- 

 lected by Dr. Wm. Stimpsou, Naturalist to the Expedition. 

 Part IV, Actinaria. Illustrated by 2 plates. [Concluded 

 . from Vol. V, p. 330, etc. Author's copies issued Nov., 1869. 



Regular issue, March, 1870]. pp. 51-104. Plates. 1-2. 

 V. HORACE MANN. Flora of the Hawaiian Islands. [Concluded 

 from Vol. V, p. 248. See Editorial Note on p. 112. Reg- 

 ular issue March, 1871]. pp. 105-112. 



VI. T. MARTIN TRIPPE. Notes on the Birds of Minnesota. [Com- 

 municated Jan., 1871. Regular issue, March, 1871]. pp. 113- 

 119. 



VII. R. T. KNIGHT. Note on the Earth Worm. [Communicated 



1870. Regular issue March, 1871]. p. 120. 



VIII. THEODORE GILL. Synopsis of the Primary Subdivisions of the 

 Cetaceans. [Communicated December, 1870. Author's copies 

 and Regular issue, March, 1871]. pp. 121-127. 

 IX. ELLIOTT COUES. On the Myology of the Ornithorhynchus. 

 [Communicated December, 1870. Author's copies and reg- 

 ular issue, May, 1871]. pp. 128-173. 



