3 



omy, and in the Philosophical Transactions for 1822. But little is 

 known of the habits of the animal, it being exceedingly rare, and 

 an inhabitant of the Southern Pacific Ocean. 



The Secretary presented to the Cabinet of the Society 

 the following anatomical preparations, viz : 



Skeleton of the Emysaurus serpentina, Lin. 



" " " Raia batis, Lin. common skate. 

 " " Boa. 

 Cranium of the Crotalus durissus, Kalm, rattlesnake. 

 Cranium of an eagie, the outer table of the skull being removed 



to show the existence of air ceils communicating with the cavity 



of the tympanum. 

 Craniui.i of a Panther, showing the bones of the ear, in situ, 



and the cavity of the tympanum. 



He also added, that the Society had, since the last meet- 

 ing, received from D. T. McCauley, Esq.. U. S. Consul at 

 Tripoli, three living specimens of the four-horned variety 

 of sheep, and one specimen of the Fezzaif variety. The 

 former, in addition to the four horns, were characterized by 

 broad tails, which sometimes acquire a weight of 10 to 

 15 lbs. They are covered with a long, coarse wool, which 

 is of but little value. The Fezzan variety is covered en- 

 tirely with a coarse hair, forming a mane on the shoulders, 

 and also acquiring a length of several inches on the dew- 

 lap. This variety is of no value as an article of food # 

 The President of the Society was authorized to make such 

 disposition of them as he deemed expedient. 



Mr. Teschemacher exhibited the following specimens of 

 minerals, lately received from Dr. Monticelli, of Naples, 

 some of which were probably new to the members of this 

 Society — all from Vesuvian localities : 



Thomsonite, Gismondine, which is considered by Brooke, (An- 

 nals of Philos. 1837,) as synonymous with Phillipsite and Aricite ; 

 Christianite crystallized, according to the Berlin mineralogists 

 identical with Fosterite ; Humite ; Biotine in brilliant white crystals ; 

 Monticellite undescribed ; Hauyne in dodecahedral crystals ; and 

 chloride of copper. 



