438 NEW SUBFAMILY OF BATS—H. ALLEN, 
tion of the trochanters. The bones of the first row of phalanges of the 
foot gradually increase in length from the second to the fifth as in Lo- 
bostomidze. The loop of the superior semicircular canal of the auditory 
apparatus, as is the rule with the Phyllostomide, is not occupied with 
bone. The astragalus is slightly sigmoid, as in Chilonycteris. 
The characters which Nataline enjoy in common with Vespertilion- 
idw are the presence of two phalanges in the third manal digit; three 
premolars in each jaw, and incisors in two pairs in the upper jaw. In 
the arrangement of the nerve lines in the fourth interdigital and in 
the shape of the second phalanx of the third manal digit the Natalinee 
resemble the Emballonuride. 
From Noctilio and Lobostomide the Nataline differ in the absence 
of an internal basal ridge to the auricle. The arrangement of the nerves 
in the fourth interdigital space is exactly as in Chilonycteris. The pro- 
portions of the phalanges of the fourth and fifth fingers are almost ex- 
actly the same as in the genus last named. 
The Nataline resemble the genus Plecotus of the Vespertilionide in 
the flexion of the pollical metacarpal bone; in the wide second interdig- 
ital interspace; in the absence of a skin-fold at the proximal end of the 
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Fic. 1. Front view of an embryo of Natalus stramineus, showing rudimentary nose-leaf. 
metacarpal bones, as well as in the absence of the accessory cartilage 
to the terminal cartilage of the fifth manal digit. 
Two embryos were available for examination, both obtained from ma- 
terial in the Museum of the Academy of Natural Sciences of Philadel- 
phia, collected by the late Mr. William M. Gabb in Santo Domingo. One 
of these specimens was oval, measured 25 millimeters in length and 15 
in breadth. Length of head, 16 millimeters; foot, 9; thumb, 5. Sex ap- 
parently female. There was no trace of nose-leaf, the parts being quite 
the same as in the adult. The tragus was carried forward and laid on 
the cheek. It was simple and without the peculiarities of the adult. 
