COMMUNICATIONS. 



I. D. M. BALCII, On Sodalite at Salem, p. 3. 

 II. GEORGE H. EMERSON, On Magnetite and an Unknown Min- 

 eral at Nahant. p. 6. 



III. A. S. PACKARD, jr., Notes on the Family Zygasnidae. 

 With two plates, p. 7. 



IV. J. A. ALLEN, Catalogue of Birds found at Springfield. Mass., 

 with Notes on their Migrations, Habits, &c., together with 

 a List of those Birds found in the State not yet observed 

 at Springfield, p. 48. 



V. F. W. PUTNAM, Notes on the Habits of some species of 

 Humble Bees. p. 98. 



VI. F. W. PUTNAM, Notes on the Leaf-cutting Bee. p. 105. 

 VII. A. S. PACKARD, jr., The Humble Bees of New England and 

 their Parasites ; with notices of a new species of Anthopho- 

 rabia, and a new genus of Proctotrupidae. With a plate, p. 107. 

 VIII. D. M. BALCH, On Native Grapes, p. 140. 



IX. A. E. VERRILL, Classification of Polyps ; (Extract condensed 

 from a Synopsis of the Polypi of the North Pacific Explor- 

 ing Expedition, under Captains Ringgold and Rodgers, U. S. 

 N.) Part I. p. 145. 



X. J. A. ALLEN, Notes on the Habits and Distribution of the 

 Duck Hawk, or American Peregrine Falcon, in the Breeding 

 Season, and Description of the Eggs. p. 153. 



XI. EDWARD S. MORSE, A Classification of Mollusca, based on 



the " Principle of Cephalization." With a plate, p. 162. 

 XII. A. E. VERRILL, Synopsis of the Polyps and Corals of the 

 North Pacific Exploring Expedition, under Commodore C. 

 Ringgold and Captain John Rodgers, U. S. N., from 1853 

 to 1856. Collected by Dr. William Stimpson, naturalist to 

 the Expedition. With Descriptions of some additional 

 Species from the West Coast of North America. Part II, 

 ALCYONARIA. With two Plates, p. 181. 



XIII. ALPHEUS HYATT, Observations on Polyzoa, Suborder Phy- 

 lactolsemata. With nine Plates, p. 197. (The ninth plate 

 will be given with the continuation of the paper in the next 

 volume). 





