Feb. | ALLEN — CHILONYCTERIS TORREI 5 
prominent. The free edge of the interfemoral membrane between these 
tips of the calcanea is slightly thickened, but not otherwise peculiar. 
In macleayii, on the other hand, the longitudinal lines of minute papillae 
with which the membrane is studded, become raised and thickened so as 
to form eight longitudinal ridges, well marked, at the free border of the 
membrane. In other particulars of external structure the two species seem 
to be practically alike. 
Skull.— In addition to its much smaller size, the skull of C. torrez is less 
inflated at the tip of the rostrum, as compared with that of C. macleayii, so 
that in dorsal view the muzzle is decidedly more tapering. This fact was 
noticed by Rehn, who, however, supposed it to be a sexual character of 
the males of the latter species. The interorbital constriction is slightly 
more abrupt, giving, from above, a rounder outline to the brain-case; a 
distinet isthmus, bounded by a transverse sulcus at either end, marks off 
the brain-case from the rostrum somewhat more sharply than in macleayii. 
Except for slight differences of proportion, the teeth of the two species 
seem to be essentially similar. The molars of C. torre are relatively larger, 
however, so that the palatal region between the molar rows is decidedly 
more narrowed; the minute lower premolar (pm;) seems to be crowded 
slightly more to the inner side of the tooth-row as well. 
Measurements — In his paper of 1904, Mr. Miller (p. 343) gives the 
external measurements of a series of both these species under the name 
macleayti. The individuals with forearm measurements 36-38 mm. are 
torre. It will therefore suffice to append the dimensions of the type of 
lorrei, with the corresponding measurements of a specimen of macleayii 
(M.C. Z., no. 11,668) in parenthesis, following each: head and body (anus 
to muzzle, approximately), 40 mm. (43); tail from anus (approximately), 
19.5 (25.5); ear from meatus, 15.5 (18); tibia, 15.5 (17); hind foot, 8 (9); 
forearm, 37 (43); third finger, 69.5 (74.5); fifth finger, 44 (50). Skull: 
greatest length, 14.5 (16.1); basal length, 12.2 (13.8); palatal length, 
7.2 (8.2); zygomatic breadth, 7.7 (8); greatest breadth at base of rostrum, 
6 (6.5); mastoid width, 7.6 (8.2); width of brain-case, 6.7 (7.3); inter- 
orbital constriction, 3 (3); upper tooth-row, 7.0 (7.8); lower tooth-row, 
7.0 (7.8). 
Remarks.— It is a pleasure to associate with this species the 
name of Professor de la Torre, to whose keen interest in the natural 
history of Cuba many important discoveries are due. 
The recognition of this third West Indian species of Chilonycteris 
makes it necessary to determine if the representatives of the genus 
on other Greater Antillean islands that have hitherto been con- 
sidered subspecies of macleayzi are really of that type; it will also 
