25. 8TEN0DERMA. 529 



2. Steuoderma rnfum. 



Stenoderma rufum, Geofroy, Desa: de l'Egypte,\\. p. 114(1812); 



Peters, MB. Akad. Be7-l. 1876, pp. 430-434, pi. i. figs. 1-7. 

 Artibseus undatus, Gervais, ExpSd. du Comte de Castelnau, Zoologie, 



Mammifh-es, p. 35, pi. ix. fig. 3 (1855). 

 Dermanura undatxun, Gervais, Compt. Sendtts de I'Acad. dea Sciences, 



1856, p. 647. 

 Histiopa iindatua, Peters, I. o. 1869, p. 399. 



This species is known only from a skin in bad condition and a 

 skuU preserved in the collection of the Paris Museum, and from 

 the descriptions and figures referred to above. 



The central upper incisors are unicuspidate ; a small obtuse pro- 

 minence, near the middle of the outer side of each tooth, corresponds 

 to the obtuse outer cusp of the same tooth in S. achradophilum ; in 

 the upper jaw a minute third molar, nearly equal to the base of the 

 middle upper iacisor in cross section, is placed immediately behind 

 the second molar to the inner side of the tooth-row ; second upper 

 molar as large as in the preceding species. Palate emarginate as 

 far forwards as a line joining the anterior inner margins of the first 

 upper molars of opposite sides ; sides of the emargination parallel as 

 in S. achradophilum. Prontal bones deeply concave in front. 



Hah. Unknown. 



3. Stenoderma falcatum. 



Arctibeus falcatus, Gray, Ann. Nat. Hist. 1839, p. 1. 



PhyUostoma albomaculatum, Gundlach, MB. Akad, Berl. 1861, 



p. 165. 

 Phyllops falcatus, Peters, MB. Akad. Berl. 1876, p. 433. - 



Ears, nose-leaf, and general external form as in S. achradophilum, 

 with which it also agrees closely in size. 



The frontal between the supraorbital ridges is flattened, not deeply 

 concave as in S. rufum, and the palate is angularly emarginate as 

 far forwards as a line joining the centres of the first upper molars 

 of opposite sides, the sides of the emargination converging forwards 

 and forming an angle. The antepenultimate or second upper molar 

 is scarcely three fourths the size of the first molar, while the corre- 

 sponding teeth in S. rufum and S. achradophilum are nearly equal 

 in their antero-posterior diameters. The third upper molar is even 

 smaller than the corresponding tooth in the lower jaw, and is placed 

 close behind the second molar to the inner side of the tooth-row 

 (Plate XXVIII. figs. 3, 3 a). 



Length (of the type specimen), head and body 1""9, head 0""75, 

 ear 0"-6, tragus 0"-23, forearm l"-65, thumb 0"-4 ; third finger — 

 metacarp. l"-5, 1st ph. 0"-65, 2nd ph. 0"-8, 3rd ph. 0"-45 ; fourth 

 finger— metacarp. l"-5, 1st ph. 0"-5, 2nd ph. 0"-5 ; fifth finger — 

 metacarp. l"-5, 1st ph. 0"-45, 2nd ph. 0"-5; tibia 0"-6, foot 0"-4. 



Hob. Cuba. 



The arched condition of the index finger outwards, from which 

 this species has derived its specific name, although more or less 

 ^ 2m 



