THE FAMILIES AND GENERA OF BATS. 119 



1901. Mormopina: Rehn, Proc Acad. Nat. Sci. Philadelphia, p. 297, June 8, 



1901. 

 1901. Clulonycterina' Miller and Rehn, Proc. Boston Soc Nat. Hist, XXX, 



p. 275, December 27, 1901. 



Geographic distribution. — Tropical America, north to Cuba and 

 and the southern border of the United States. 



Characters. — Teeth normal; humerus without secondary articula- 

 tion with scapula, the tubercles short, rising scarcely above level of 

 head, epitrochlea small, hardly more than base to large spinous 

 process; muzzle without nose leaf; lower lip with plate-like out- 

 growths. 



Principal subdivisions. — The members of the subfamily Chilonyc- 

 terinse are divisible into three genera. 



KEY TO THE GENERA OF CHILONYCTEKIN/E. 



Braincase broader than long; the basioccipital region conspicuously ele- 

 vated Monnoops, p. 121. 



Braincase longer than broad ; the basioccipital region not conspicuously 

 elevated. 



Wing membranes attached to sides of body ; back evidently furred 



Chilonycteris, p. 119. 



Wing membranes attached to middle of back ; back apparently 



naked Pteronotus, p. 120. 



Genus CHILONYCTERIS Gray. 



1839. Chilonycteris Gray, Ann. Xat Hist., IV, p. 4 (macleayii) . 



1840. Lobostoma Gundlach, Wiegmann's Archiv. fiir Naturgesehiehte, VI, 

 Pt 1, p. 357 (part). 



1843. Phyllodia Gray, Proc. Zool. Soc. London, p. 50 (parnellii). 

 1878. Chilonycteris Dobson, Catal. Chiropt Brit. Mus., p. 447. 

 1904. Chilonycteris Rehn, Proc. Acad. Nat Sci. Philadelphia, p. 181, Feb- 

 ruary, 1904, issued March 29, 1904. 



Type-species. — Chilonycteris macleayii Gray. 



Geographic distribution. — Warmer parts of America, north to Cuba 

 and central Mexico. 



Number of forms. — According to the most recent writer on the 

 genus, Mr. Rehn, there are eleven forms of the restricted genus Chi- 

 lonycteris. 



Characters. — Dental formula : 



-2 3. 1. --34567 .2-2 1 -1 2-2 3 - 3 



12-. 1. - 2 3 4 5 6 7 * 2 - 2' '' 1 - V pm 3 - 3' m 3 - 3 ' 



Upper incisors unequal, the inner at least twice as large as outer, 

 its crown subquadrate or rhombic in section, the anterior face 

 broader than high; cutting edge nearly straight or with distinct 

 median notch. Outer incisor scarcely extending beyond alveolus 

 of inner. The four teeth form a continuous row between canines, 



