N Jaumave, Tamaulipas, x 2-1/2.]

_Remarks._--The essential differences between _D. stocki_ and _D.
rotundus_ are in size and proportion. I do not doubt that the two
species are closely related; possibly _stocki_ is ancestral to
_rotundus_.

The species is named in honor of the late Professor Chester Stock,
under whose direction the fossil materials from San Josecito Cave were
obtained, and who, at the time of his death, was studying the mammalian
fauna from the cave.

_Eptesicus cf. grandis_ (Brown)

_Referred material._--One rostrum, with P4-M3 on the right
side and P4 only on the left, LACM (CIT) 2990.

_Remarks._--This specimen is referred provisionally to _E. grandis_.
The dentition is larger and heavier, and the ridges and depressions on
the dorsal surface of the rostrum are more pronounced than in Recent
_E. fuscus_. The P4-M3 length is 6.1 (approximately 6.1 in the holotype
of _grandis_, less in _fuscus_); least interorbital constriction, 4.2
(4.3 in the holotype of _grandis_, more in _fuscus_); breadth of
rostrum between infraorbital canals, 6.4; breadth across P4, 7.3.

TABLE 1.--Cranial measurements of two species of _Desmodus_.

---------------------+-------+-------+-------+-------+-------+--------
Catalogue number | G o | C l | Z b | B b | L c | B f
or number of | r f | o e | y r | r r | e o | r o
specimens averaged | e | n n | g e | e a | a n | e r
| a s | d g | o a | a i | s s | a a
| t k | y t | m d | d n | t t | d m
| e u | l h | a t | t c | r | t e
| s l | o | t h | h a | i i | h n
| t l | b | i | s | n c |
| | a | c | o e | t t | o m
| l | s | | f | e i | f a
| e | a | | | r o | g
| n | l | | | o n | n
| g | | | | r | u
| t | | | | b | m
| h | | | | i |
| | | | | t |
| | | | | a |
| | | | | l |