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Owen, Ricwarp, Professor. 
On the Anatomy of the Aye-aye. Part I. (Abstract) .. 11 
—_——__—_———. Part II. (Abstract) .. 13 
Parker, W. K. 
Abstract of a Memoir on the Osteology of the genera Pte- 
rocles, Syrrhaptes, Hemipodius, and Tinamus............ 253 
Pease, W. Harper. 
Descriptions of Two New Species of Helicter ( Achatinella, 
Swains.), from the Sandwich Islands, with a History of the 
SOMUN faya0- cio ee x te ee daae ee, iota awiecatire ley eiace 2 coe eee 3 
Description of a New Genus of Marine Shells from the 
a WACH » LSA, 4 scence iam oye, alayaimr 45,0 sie ain le says © onakales eee 
Descriptions of New Species of Marine Shells from the 
Paciatiey VARANS oos S0y cay < cise apo napa, ae ce apes * Se a re 240 
Descriptions of New Species of Shells from the Pacific 
MAGS i. Sextury «is. 3)ahy< ela ee ¢ syerw soa +) ocala: SMa eee Toh ce 
Description of New Species of Marine Shells from the Pa- 
Bie MLAS TE aioe asia! c wt ow ala OMe Saget ts ee 
Preirrer, Dr. L. 
Descriptions of Eight New Species of Cyclostomacea, from 
the Collection of Hi. Cuming, Wisq. -.s.< 2: fos seas anes 115 
Description of a New Species of Helix (Nanina)........ 117 
Descriptions of Thirty-six New Land Shells, from the Col- 
lection of t4. "Cuming; Esq. Cec. /Gc.. os cess se 3 so once eee 
Powerscourt, Viscount, F.Z.S. 
Exhibition, through Mr. Fraser, of an enormous pair of 
Antlers: with farhy-toar-omts, (6.66 /s <5 vies om ans pawns 142 
Prime, Tempuxe, of New York. 
Descriptions of Three New Species of Shells belonging to 
the Family of Cyclades... jacneegtiks Vee eg ewig sete 2 
