24 NOK'IMI AMEh'IOAN HATS 11. AM-K\. 



S(';U'<'«'ly liiii'lu'r llmii I he acct nbiiliiiii. '['lie iiil'ciinr hordci' of I he pubic 

 l)(HU^ jiTcatly tliickciHMl near tlic syiiipliysic line in (lie iiiah'. I'lic iii- 

 iioininatr Itoiic is lij^htly held to the saciiiiii and at tlif syni]>liysis pubis. 

 Tlu' inner trocliantcr <»!' the iVniur (Mpials tlic external. Uotli are suKill 

 aud the gluteal crest is scarcely larger than a tlange which unites the 

 inner troehauter to the shaft, thus uiaking t lie fennir uniipus The in- 

 uer condyle is slightly tiie larger and the notch narrow. The tibia 

 with large projecting median spine at the proximal <'ii(l; malleous dis- 

 tinct. 



In Adelonijcteris Mid Ijiisioiii/ctcris \\iv parts quite as in VrspertiJiOy 

 the pectineal spiue slightly longer: the shaft (»t' the t'emur just below 

 the head less expanded. 



(^oryuorJiinKs much as in Vespertilio, but the upper part of the fenuir 

 much less expanded, the shaft near the trochanter scarcely at all. 



The fenuir is without neck. The outer and inner trochanters are 

 subeiiual, and of large size, the outer tending to become the larger as 

 in the molossines. The outer side of the shaft below the tnxdianter 

 is otten marked by a tiange in position of the third trochanter. 7//^- 

 pofiidi'ro.'i and all phyllostomines show an inclination to the development 

 of a conspicuous Hange on the inner side of the shatt near tlu^ iniu'r tro- 

 chanter. This is most marked in Chilonyctcris, Moniiop.s, and Natidus. 

 In the genera last named the trochanters are drawn backAvard, lie on 

 the i>ostei'ior surface of the bone, ami are in close relation (resembling, 

 with the heatl, tlie anterior eml of a geometric larva), while as a rule 

 they are on lines which answer to the lateral ligaments of the knee 

 Joint. The condyles are ai)proximate markedly unecpial with a narrow 

 intercomlylar notch, the inner condyle being the larger, as is the rule, 

 or wide apart with small condyles, as in molossines and rliinoloi)hines. 

 The tibia may be shorter than the fenuir, as in Artibciis ami .l^)^)s,s■?^s', 

 but it is, as a rule, longer than that bone. The inner tuberosity is fur- 

 nished with a horizontally-projecting process in vespertilioniues ; this is 

 an t'xcellent character defining the family. The tubercle for insertion 

 of the hamstrings is most marked in strictly arbori'al forms, as the 

 pteropines. The malleolus is often rudimentary or absent, as in phyl- 

 lostomines and rhinolo]»hines. The fibula is uniforndy im])erfect above 

 save in the molossines, where it is complete, or in Antrozoiis, where a 

 mend)ranous fillet continues the form of the bone to the iiuier tuberosity 

 of the tibia. 



The toes retain two i)halanges to the first toe; all the others have 

 three, but ditt'er in their relative lengths. The first phalanx of the first 

 toe is, so far as examined, longer than that of the other toes. In 

 J^teropiis the lengths of the toes from the second to the fifth gradually 

 diminish. In ('ltil(>)tiictcris they abruptly increase, that of the second 

 toe being one-third shorter than the fifth. In all bats the tarsus and 

 calcaneum are elongate and exhibit the general character of these bones 

 in mammals, in which little or no weight is borne upon the posterior 

 extremities. Both bones are so disposed that the larger end of each is 



