360 University of California Publications in Zoology (Vou. 17 
City, where the type specimen was taken, has an altitude of over 
7000 feet. 
Natural History.—Nothing is known under this head. 
Nyctinomus femorosaccus Merriam 
Pocketed Bat 
Nyctinomus femorosaccus Merriam (1889a, p. 23). Original description; 
type locality, Agua Caliente [= Palm Springs, Riverside County], Cali- 
fornia. 
Nuyuctinomus femorosaccus, Bryant (1891a, p. 359). Nominal. 
Nyctinomus femorosaccus, Bryant (1892, p. 220). Nominal. 
Nyctinomus femorosaccus, Elliot (1901, pp. 417-418). Description. 
Nyctinomus femorosacecus, Miller and Rehn (1901, p. 272). Type locality. 
Nyctinomus femorosaccus, Elliot (1904a, p. 321). Specimen recorded from 
Palm Cafion, Colorado Desert. 
Nyctinomus femorosaccus, Elliot (1904b, p. 626). Description. 
Nyctinomops femorosaccus, Stephens (1906, p. 274). Description; type 
locality. 
Nyctinomops femorosaccus, Elliot (1907, p. 523). Repeated record. 
Nyctinomus femorosaccus, Miller (1912, p. 69). Nominal. 
Nyctinomus femorosaccus, J. Grinnell (1913), p. 282). Range in Cali- 
fornia. 
Diagnosis —Size medium (total length 103 millimeters) ; tail more 
than half exserted; a fold of membrane extends from inner third of 
femur to middle of tibia, forming a pocket at thigh; ears connected 
at bases; color dull brown. 
Description.—Merriam (1889a, p. 23) gives the following deserip- 
tion of the type specimen of the pocketed bat: 
Measurements [in millimeters] (from the alcoholic specimen).—Total length, 
103; head and body, 60; tail, 41; exserted part of tail, 23; head, 23; ear from 
crown, 14; ear from base of antitragus, 20; tragus, 1; humerus, 28; forearm, 
47; third finger: metacarpal, 45; first phalanx, 20; second phalanx, 19; fifth 
finger, 44. 
General Characters.—Incisors = Lower incisors bifid and crowded; first 
upper premolar small, but well developed; second very large, with a large and 
high antero-internal cusp. Ears thick, united by bases of inner margins 4.5 mm. 
from end of nose; ear keel greatly developed, with a large lobe on its lower third; 
antitragus higher than long, convex anteriorly, slightly concave posteriorly, and 
separated by a deep notch; tragus subquadrate, hidden behind the large anti- 
tragus, its outer angle projecting upward in the form of a small pointed lobule; 
upper margin of ear conch with two minute horny projections, not symmetrical 
on the two sides. Tail more than half exserted. Gular sae present (opening on 
right side of median line). There is a curious fold of membrane stretching from 
the inner third of the femur to the middle of the tibia, forming a deep pocket 
between it and the interfemoral membrane. The wing membrane is attached 
to the leg at the same point (immediately below the middle of the tibia), so 
that there are three folds of membrane here. The fur extends out on the wing 
membrane, above and beneath, as far as a line drawn from the middle of the 
humerus to the junction of the middle and outer thirds of the femur. Color, 
dull brown. c 
