352 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
CHAEREPHON EMINI (de Winton). 
Emin’s Free-tailed Bat. 
Nyctinomus emini de Winton, Ann. mag. nat. hist., 1901, ser. 7, 7, p. 40. 
Wroughton (1911) has recorded this species from Roseires, on the 
Blue Nile, where a single male was taken by Mr. A. L. Butler. We 
collected a specimen not far from the same locality, at Aradeiba, 
which seems to be the same species, though differing from the type as 
described by de Winton in that the first upper premolar is crowded 
slightly to the exterior of the line of the tooth row instead of standing 
directly in it. The lower incisors are markedly bifurcate in this 
specimen in addition. The color above is a very grayish brown rather 
than reddish brown; the throat hairs are pure white to their bases, 
and this color extends down the midventral line. The hair at the 
elbow and thence along the sides to the groin is not white but more 
like that of the sides of the body — a variation similar to that seen in 
this area of C. pumilus. The forearm measures 42 mm.; that of the : 
type specimen from Mosambiro, 43 mm. ‘The skull measures: — — 
greatest length 19 mm., palatal length 8.2; width outside last molars | 
9.5; zygomatic width 12.7; interorbital constriction 4; upper tooth — 
row excluding incisors 7.5; lower tooth row excluding incisors 8.5. 
t 
} 
CHAEREPHON BIVITTATUS (Heuglin). 
Gray-streaked Free-tailed Bat. 
| 
Nyctinomus bivittatus Heuglin, Nova acta Acad. Leop. Carol., 1861, 29, art. 8, | 
p. 13. | 
Two large heavy-bodied bats from El Garef on the Blue Nile, seem 
to represent Heuglin’s species, though the forearm measurement — 
(42, 44 mm.) seems rather smaller than that given by the deseriber — 
(1 inch 10 lines = 46.4 mm.). Heuglin’s specimens were from Keren, | 
in north-central Erythrea. The color above is very dark brown | 
with a minute frosting of gray, and with scattered specks or streaks 
of whitish, on the nape, shoulders, and back; below, the fur is grayish, © 
darker on the sides, and clearer on the lower throat. The two speci- — 
mens were very fat and heavy bodied. They were flying shortly after _ 
sunset, going in a rather steady slow course, in comparison with the | 
smaller species. Compared with C. emini, which it approximates 1 
