?80 ^ ^ETV SPECIES OF BAT— ALLEN. 



Based on skins of two adults: No. 9523, U.S.N.M., La Guayra, Vene- 

 zuela;! and ]S"o. 9522, U.S.^^'.M., co-types. 



No. 9523, IT.S.N.M., fur soft, sliiew-like; dull ash at basal two-tbirds, 

 sooty at apical third; it extends along the entire length of the dorsi- 

 faclal region. No. 9522, U.S.N.M., quite the same, but is dark brown 

 instead of sooty. 



The skuir^ closely resembles that of G. soricina, hut is smaller and 

 thinner walled. The ascending process of the zygoma is longer and 

 more pointed than in the species just named; the palatal notcli is less 

 acute. The fronto-maxillary inflation is conspicuous. The symphysis 

 menti is carinate. The angle of the lower jaw projects backward 

 slightly beyond the line of the condyloid i^rocess. The brain case is 

 12 ram. and the face 7 mm. long. 



The upper central incisors broad with slightly concave cutting edges; 

 the lateral incisors are narrow with oblique cutting edges. The 

 premolars are slightly separated from one another and the second 

 premolar from the first molar; they are compressed, subequal, and tri- 

 angular; the second premolar is thickened posteriorly. The other 

 teeth closely resemble those of G. sork-ina. The first upper molar is 

 longer than the second and the second longer than the third; there are 

 no ridges extending from the paracone to the metacone. The third 

 upper molar does not overlap the second molar at the buccal border. 



The muscle fascicles and nerve markings of the endopatagium dis- 

 posed as in G, soricina. This system is the weakest of any of the 

 group of the Glossophagai. The terminal cartilages are throughout 

 terete. 



On the whole the descriptions of Pallas and of Geoftroy agree well 

 with GIossophiKjii soricina of Peters' revision, and exclude those speci- 

 mens here embraced under G. villosa. In Geoft'roy's figure^ the meas- 

 urements of the nose-leaf agree with those of G. soricina, but tlie 

 shape of the tragus and internal basal lobe of the auricle are like those 

 of the form under consideration. But the figure is evidently based 

 upon a dried specimen. 



The isolation of the i)remolars in G. riUosa answer fairly well to the 

 arrangement of the teeth in an old example of G. soricina. This is an 

 interesting fact, inasmuch as it suggests that senile characters in one 

 species may be the same as those found in young adult life of another. 



The following proportions are noteworthy: The first phalanx of the 

 third digit is longer than the second. The third metacarpal bone is as 

 long as the forearm. The forearm is 1.15 ram., the smallest in the 

 group. Tlie calcar is one-third the length of the tibia. The first pha- 

 lanx of the first toe extends slightly beyond the first phalangeal joint 



'It is not certain that the locality hero given is the correct one. The record in 

 the National Mnscuin catalogue is imperfect. 



'■'In addition to the sknll in tlie type specimens, I possess a skull IVom Brazil ])re- 

 sented by the late Mr. Harte, which answers to the above description. 



3Ann. du Mus., 1810, XV., Pl. XI. 



