68 Two Species of Molossus. 



tion, and so prepared that most of the teeth can be examined 

 without injury to it. 



The Dysopcs obscurus of Tcmminck bears a close resem- 

 blance to our species, and may possibly prove to be the same, 

 when better materials for comparison shall be obtained. The 

 description of Rhbiopoma carolinemis applies equally to this 

 species with the former, and in the number of lower incisors 

 it corresponds still better with it. See Desmarest, Mamm. 



In order that naturalists may judge with what degree of pro- 

 priety I have referred these Bats to the genus Molossus, and at 

 the same time to complete their description, I shall subjoin 

 the characteristics of that remarkable genus, as laid down by 

 Temminck in his Monography, a work drawn up with great care 

 from materials obtained by the examination of all the principal 

 cabinets of Holland, France, England and Germany. 



DYSOPES. Illig. Temm. 



Vespertilio, Linn. Gmel. Molossus, Geoff. Cuv. Desm. 

 Nyctinotnus, Geoff. Desm. Cheiromeles, Horsf. Dinops, Savi. 



Incisive teeth variable in number with age, £, |, £, or |, or 

 even f in youth. The adult has constantly two upper incisors 

 more or less apart, and converging towards the point. The 

 lower small, bilobed, much crowded, (inferiores 6 conferti, 

 LC.), and all or part of them falling out from the excessive 

 development of the heel (or basal process) of the canine. 



Canine teeth ?,, the upper large, channeled in front, the 

 lower as it were grafted on an immense heel touching, in the 

 adult, exactly at the base, but spaced in the young, so as to 

 ledge the incisives. 



Molar teeth f ; in some species a fifth tooth, or little rudi- 

 mentary point, scarcely visible, between the canine and the first 

 upper molar (molares superiores 5, anterioribus minutis, LC.) 



The total number of teeth very variable with age, so as to 



