— Zoology. 161 
alveola of incisor, 25. The skull and teeth are nearly precisely as 
figured by Baird for Veotoma mexicana (U. S. Mex. Boundary Survey, 
Mammals, Pl. xxiv., Figs. 1 4 to g-) 
Type specimen : No. 380, Museum of Comision Geografica-Explora- 
dora; adult female, taken between Tetela del Volcan and Zacualpan 
Amilpas, State of Morelos, Oct. 26, 1890. Collector, H. L, Ward. 
Found in dark tunnel of an abandoned mine. 
According to Coues (Mon. N, A. Rod.), Neotoma is a genus in 
which cranial and dental characters count for little or nothing (!), but in 
which color appears to be quite constant. We will therefore disregard 
the almost exact conformity of the skull and teeth of this species with 
those figured by Prof. Baird for mexicana, and will call attention only 
to external characters. ÆW. sorquata is at once distinguished from all 
known species of Neotoma by its collar ; also from floridana by the 
more rufous color of upper parts, and by roots of hairs of belly being 
gray instead of white; from fuscipes and ferruginea by this latter dis- 
tinction and the tail being bicolor, instead of unicolor ; from cinerea 
in general coloration and in not having the tail bushily haired. —Henry 
L. Warp, Zacubaya, D. F. Mex., Jan. 22, 1892. 
The Entepicondylar Bridge in Man.—M. S. Nicholas, has 
observed and recorded (Revue Biologique du Nord de la, France, 
1891, p. 121), six cases of the presence of a rudiment of the superior 
part of the entepicondylar bridge of the humerus in man. They all 
occurred in insane persons who died in the Asylum of Maréville. This 
anomaly is interesting as constituting a lemuroid reversion. Struthers 
has observed this anomaly in 2 p. c. of skeletons he has examined, and 
Gruber in 2.7 p. c. Testut gives 1 p. c. as the proportion of cases, 
which Nicholas thinks is the most probably correct figure. 
