THE FAMILIES AND GENEKA OP BATS. 



185 



known specimens is deeply emarginate posteriorly to level of middle 

 molar. This condition is probably due, at least in part, to faulty 

 preparation, but it seems not improbable that the posterior region of 

 the palate is extensively and irregularly fenestrate. 



Genus CH*LONATALUS Miller. 



1898. OMlonatalus Mili.ee, Proc. Acad. Nat Sci. Philadelphia, p. 326 (sub- 

 genus of Natalus). 



1903. Chilonataluu Miller, Proc. Biol. Soc. Washington, XVI, p. 119. Sep- 

 tember 30, 1903 (genus). 



Type-species. — Natalus micropus Dobson. 



Geographic distribution. — Bahama Islands, Greater Antilles (Cuba, 

 Jamaica), and Old Providence Island, 

 Caribbean Sea. 



Number of forms. — Three species of 

 Chilonataluu are now recognized. 



Characters. — Differs from Natalus in 

 the presence of a ridge-like dermal out- 

 growth on muzzle, suggesting a rudimen- 

 tary noseleaf, and another on chin, pro- 

 ducing in profile a double-lipped aspect; 

 males, with large glandular swelling be- 

 tween and in front of eyes. Skull (fig. 

 27) like that of Natalus, but with rostrum 

 relatively longer, more slender, and more 

 depressed posteriorly. 



Species examined. — Chilonatalus micro- 

 pus (Dobson), C. brevimanus (Miller), 

 and C. tumidifrons (Miller). 



Remarks. — Although dist inejuished 



Fig. 27. — Chilonatalus micbopus. 

 x2f. 



chiefly by external characters, this genus differs from Natalus in the 

 excessively attenuate, flattened rostrum. It contains the smallest 

 known numbers of the family, Nyctiellus lepidus excepted. 



Genus NYCMELLUS Gervais. 



1855. Nyctiellus Gebvais, Expgd. du Comte de Castelnau, Zool., Mamm., 



p. 84. 

 1866. Nycticellus Geat, Ann. and Mag. Nat. Hist, 3d ser., p. 91. February, 



1866. 

 1878. Natalus Dobson, Catal. Chiropt Brit. Mus., p. 341 (part). 

 1904. Nyctiellus Millee, Proc. U. S. National Museum, XXVII, p. 340. 



January 23, 1904. 



Type-species. — Vespertilio lepidus Gervais. 

 Geographic distribution. — Cuba, including the Isle of Pines. 

 Number of forms. — The type species is the only form thus far dis- 

 covered. 



