Ward—The Variations in Proportions in Bats. 
647 
Glossophaga soricina (Pallas). 
Twenty-five specimens collected in the District of Cuernavaca, 
Morelos, Oct. 1st, 1890, by H. L. Ward and C. M. Terait. 
The variations in proportions in this species are nearly all 
quite moderate, probably not more than would naturally be ex¬ 
pected in a mammal of its size. Slight discreoancies in the 
graphs showing measurements will be noticed in many instances. 
Length of head and body to that of head alone varies from 
57:22 to 50 :22; of length to forearm from 50:37 to 57:34; of 
head to ear from 22:15 to 22:13; of forearm to thumb from 
33 :11 to 35 :9. 
The forearm in eight specimens is longer than the third meta¬ 
carpal, in nine specimens it is equal and in eight specimens it is 
shorter. 
The fourth metacarpal may be 3 mm. longer than the fifth, 
or of the same length. 
In the fourth and fifth digits the first phalanx may exceed, 
equal or be less than the second. 
These bats were found clinging to the roofs and sides of the 
artificial galleries penetrating the large mound upon the summit 
of which is situated the massive stone ruins of Xoxicolco. 
Myotis velifer (J. A. Allen). 
One hundred and sixty-seven specimens collected at Las Yegas, 
Veracruz, Feb. 19^21, 1891, by H. L. Ward and O. M. T'eran. 
Comparing the length of head and body with that of the tail, 
we find a 57 mm. body with a 35 mm. tail and a 52 mm. body 
bearing a 47 mm. fail, both males. Between the head and ear 
we find the extreme between 19 :14 and 18 :16. Comparing the 
length of head and body with the forearm we find a 51 mm. 
body with a 46 mm. forearm and a 60 mm. body with a 42 
mm. forearm. The forearm usually exceeds the 3rd metacarpal 
but in one instance is found to be equal. Between the third 
metacarpal and its first phalanx the greatest variation is be¬ 
tween 39:14 and 40:12. Comparing the first and second 
phalanges of the third digit we find the variation expressed by 
