52 



cle of the right side : without testaceous rudiment, terminal mucus 

 pore, or locomotive band of the foot. 



Limax campestris, Binney. L. corpore succineo colore, cylin- 

 draceo, glandulis elevatis, elongatis subrugoso ; clypeo sub-antico, 

 ovali-oblongo, lineis ct sulcis concentricis striato ; cauda subcari- 

 nata ; apertura laterali postica. Length, one inch. Inhabits the 

 New England States, New York, Ohio, Missouri. 



Philomycus dorsalis, Binney. P. corpore cylindraceo, postice 

 attenuato ; dorso linea longitudinali nigrescente interrupta et glan- 

 dulis minutis longulis instructo ; clypeo nullo ; apertura laterali 

 parva, antica. Length, .75 inch. Inhabits Massachusetts and 

 Vermont. 



Professor Hall made some verbal statements with regard 

 to the Geology of the region of Niagara Falls. 



He alluded more particularly to the retrocession of the Falls ; 

 the supposed fault of Professor Daubeny at Lewiston ; the forma- 

 tion for a space of 16 miles between Erie and Ontario, until 

 recently undetermined, — and the discovery of a fresh water for- 

 mation along the banks of the River, and on Goat Island. He 

 announced that it was his intention to write a detailed paper on 

 these subjects, and offer it for publication in the Journal. 



Professor Hall also exhibited well authenticated specimens of 

 Old Red Sandstone of England and those of Pennsylvania and 

 New York, and showed their identity by the contained fossils. 

 He proposed to prepare a paper on the results of a comparison of 

 these rocks and fossils for publication in the Journal. 



Mr. J. P. Couthouy continued his remarks upon the La- 

 goon Islands of the Pacific, which are to be embodied in a 

 paper for publication in the Journal. 



He also presented for the Cabinet several species of shells, 

 viz. — 



Helix lirata, Couth, ms. ; and H. rupium, Couth, ms. ; Chiton viri- 

 dulus, Couth, ms. ; Terebratula — ; Littorina erosa, Couth, ms. ; all 

 from Terra del Fuego ; Helicina solidula, Swains, from Chain Isl- 

 ands ; Balimus, from Pachecamac, Callao Bay ; Bulimus from Ascen- 

 sion ; Littorina from Feejee Islands ; Neritapicea, Reclus ; Littorina 

 and Pecten, all from Kauai, Sandwich Is. ; Buccinum and Ocula, 

 from Newcastle, New South Wales ; Vitrina from Argyle, New 



