164 BULLETIN 43, UNITED STATES NATIONAL MUSEUM. 



Kyctinomus nasntus (snoiity bat), Tomes, Proc. ZoijL Soc. London, 1861, 68 (Jamaica). 



H. Allen Mouog. N. A. Bats, 1864, 7. 

 2^ijctinomus l)rasilieiisi8 Isid. Geoif., Aunal. des Sci. Nat., 1, April, 1824,337, pi. xxii 



(Brazil); lb., ZoiJl., Journ., i, 1825. 133; Ferussac, Bull, des Sci. Nat., ii, 1821, 



74; Dobsou, Cat. Chirop. Brit. Mus., 1879, 437; Alston, Biolog. Centrali-Amcr., 



1879-82, 33. 

 Nyctinomus murimis Gray, Griffith's Cuv. An. Kingdom, v., 1828, 66. 

 Nycticea cynocephala Leconte, Cuv. An. Kingdom (McMurtrie's ed.), i, 1831, 432 



(South Cai'olina). 

 MvlossHs cyuocephala Cooper, Ann. Lye. Nat. His. N. Y., lv. 1837, 65, pi. iii. lig. 1; 



Wagner, Schreb., Siiugeth., Suppl. V, 1855, 714. 

 MolossHS fiiUginosus Cooper, Ann. Lye. Nat. His. N. Y., lv, 1837, 59, pi. iii, Hg. 3 



(South Carolina). 

 Rhhiopoma caroUnensis Gundlach, Archiv f. Naturgesch., 1840, 358, {vot of Geoff., 



in Desm. Mam., 1820, 130, and Diet. d'Hist. Nat., xlv, 1829) ; Leconte, Proc. 



Acad. Nat. Sci. Phila., vii, 1855, 437. 

 {'i)Dysopes naso Wagner. Schreb., Siiugeth., Suppl. i, 1840, 475. 

 {^)Xyctinomus mexicanus and N. aztecus, Sauss., Rev. et Mag. de Zool.,xi, 1860, 283. 



Diagnosis. — Muzzle truncate, witliiiumbers of spines on upper border, 

 but none on the vertical internarial ridge. Spines also on tlie inner 

 border of the auricle. Dorsum of face furnished with long stout bris- 

 tles. Fur of a dull mouse gray, paler beneath. The first phalanx 

 in the third, fourth, and fifth digits, exceeds in length the second. 

 Second phalanx of the fourth digit over half the length of the first 

 phalanx. The tail beyond the level of the toes is free. 



Description. — The muzzle with a deep emargination between the nos- 

 trils. A vertical band without a groov^e or spine extends on the muz- 

 zle to the lip. A small post-mental wart is present. The ears are one 

 half to 1™'" apart on the face.* The median border of the ear is sin- 

 uate near its attachment to the head. The onter border is notched at 

 the ui^per third so that the entire edge may be said to be scalloped; 

 the border below the side of the scallop is thin, and everted as far as 

 the line of the external basal ridge. The border ends abruptly at the 

 anterior edge of the base of the external basal lobe whicli is broader 

 than high and higher posteriorly than anteriorly. In some si)ecimens 

 the autitragus is continued forward by a skin fold to the angle of the 

 mouth. The notch between the external basal ridge and the external 

 basal lobe is inconspicuous not reaching one-half way to the base. The 

 tragus is quadrate, measuring 4""" along the posterior border andl.J""" 

 along the anterior. 



The fur is silky on the back of the head and basal half of ears; 

 the trunk and sides of the neck are plumbeous verging to drab or dusky 

 brown; the base is everywhere white but the extent of the color is 

 variable. On the sides of the neck the white color is most marked, 

 and on the lower part of the back and rump it is least so. A silvery 

 tint is seen on the tips wlien they are seen in an oblique light. The 

 sides of the trunk are mucli lighter in hue and are nnicolored. The 



*Unles8 close ex;iminatiou be made the ears appear to be united. Thus Cones .and 

 Yarrow (Wheeler's Exped., Zool., 1875) describe them as united over the vertex. 



