247 



greater dimensions; 2d. In the size and form of the superciliary 

 ridges ; 3d. In the existence of a broad and thin interparietal 

 and occipital crest in the males, and in a rudiment of the 

 same in the females ; 4th. In the great strength and arched form 

 of the zygomatic arches ; 5th. In the form of the anterior and 

 posterior nasal orifices ; 6th. The incisive alveoli are more nar- 

 row, and do not project beyond the line of the face ; 7th. The 

 scapula is more nearly equilateral, the spine divides it more 

 equally; and, Sth. The ossa ilii are much broader, more con- 

 cave, and the anterior spines project much further forwards. 



The Engeena, in the strength of the zygomatic arches, in the 

 existence of the crests, and in the great size and strength of the 

 lower jaw, resembles the Orangs of the eastern world ; but is 

 readily distinguished from them by the great size of the super- 

 ciliary ridges, by the straight outline of the face, by a fifth tuber- 

 cle on the last molar of the lower jaw, by the existence of a de- 

 pression for a round ligament on the head of the thigh-bone, by 

 the more anthropoid character of its pelvis, and by having the 

 ulna shorter than the humerus. 



Mr. Desor exhibited numerous specinnens of Ostrea, Ve- 

 nus mercenaria, Purpura lapillus, Buccinum ohsoletum, 

 &c., collected by himself from an excavation recently made 

 in the drift at Brooklyn, New York. 



They were found in a deposit of grooved and striated pebbles, 

 forming apparently an anticlinal axis, on both sides of which are 

 overlying strata of sand and clay, inclining in both a northerly 

 and southerly direction, the shells being in the upper portion of 

 the gravel bed. This shows the area of the fossiliferous drift 

 formation to be more extensive than has been supposed. 



Mr. Desor exhibited other delicate Shells, Mya arenaria, and 

 Tellina Groeiilandica, from the drift at Westport, on Lake 

 Champlain, which were in such a state of integrity as to render 

 it probable that they had lived where they were found. 



Dr. Storer gave some notices of our Torpedo. He re- 

 marked, 



" Although I had previously observed that the Torpedo occi- 

 dentalis was ' undoubtedly a Southern species,' (see Proceedings 



