. On the anatomy of vertebrates [electronic resource] . notches, producing three lobesthe common simple-nosed Bat(Vespertilio murinus) as atype of this Insectivorousgroup, we find its dentalformula to be— oo——= . *3^3; CTa,P373 In the leaf-nosed Bats(Phyllostoma, fig. 245) theincisors are the mid pair above being large andlaniariform; the caninesare well-developed in bothjaws. The second premo-lar above has a large, triedral, pointed crown. The first and secondmolars have two large external, and three small internal dentition of the blood-sucking Bats deviates, a
. On the anatomy of vertebrates [electronic resource] . notches, producing three lobesthe common simple-nosed Bat(Vespertilio murinus) as atype of this Insectivorousgroup, we find its dentalformula to be— oo——= . *3^3; CTa,P373 In the leaf-nosed Bats(Phyllostoma, fig. 245) theincisors are the mid pair above being large andlaniariform; the caninesare well-developed in bothjaws. The second premo-lar above has a large, triedral, pointed crown. The first and secondmolars have two large external, and three small internal dentition of the blood-sucking Bats deviates, as might be Dentition of leaf-nosed Bat (Phyllostoma). TEETH OF DIPHYODONTS. 311. anticipated, in a remarkable degree from that of the insectivorouskinds. The crushing instruments required for the food of thelatter are not needed; and the true molars, 246with their bristled crowns, are entirely absentin the Vampires (Desmodus), fig. 246. Theteeth, at the fore-part of the mouth, are espe-cially developed, and fashioned for the inflic-tion of a deep and clean triangular puncture,like that made by a leech. The incisors are skuii and Teeth of the vam- . , . -. pire-Bat {Desmodus Vampirus). two m number above, closely approximated,one in each premaxillary bone, with a very large, compressed,curved, and sharp-pointed crown, implanted by a strong fang whichextends into the maxillary bone. The upper canines have similarlarge lancet-shaped crowns, and their bases touch those of the in-cisors. In the lower jaw the incisors are two in number on eachside, much smaller than the upper pair, and with bilobed lower canines are nearly equal in size to those above, andh
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