66 Psyche [June 
Malakal, Sudan, Oct. 27, 1948, J. C. Bradley, 1 $ , 3 9 9 
(Cornell) . 
Steamer on White Nile, Sudan, Oct. 26, 1948, lat. 10°-45' N 
to 10°-26' N, J. C. Bradley, 1 9 (Cornell). 
Bahr el Jebel, Sudan, Nov. 3, 1948, Terakeka to Mongalla 
to lat. 5 0 -ll' N, J. C. Bradley, 1 9 (Cornell). 
Hydrometra sp. 
Bahr el Jebel, Sudan, Nov. 3, 1948, J. C. Bradley, Tera- 
keka to Mongalla to lat. 5°-ll' N. (1 9 ). (Not but near 
H. gracilenta Horv.) 
Dr. F. X. Williams sent the following four species, one 
of which is new: 
Hydrometra africana H. & E. 
Africa, Amani, Tanganyika Terr., Feb. 1948, F. X. 
Williams, 2 $ $ , 1 9 (Mus. Comp. Zool., Harvard) ; 1 $ , 
1 9 (F. H. Snow Coll.). In these specimens the males have 
the large hair tufts on the sides of the first genital segment 
that were lacking in the type. The females have two hair 
tufts on rear margin of last dorsal abdominal segment that 
are partly effaced on the allotype but present on a paratype. 
Hydrometra ugandae Jaczewski 
Africa, Uganda, Kichwamba, Feb. 28, 1948, F. .X. 
Williams, 1 S (Mus. Comp. Zool., Harvard) ; 1 $ (F. H. 
Snow Coll.). 
Hydrometra chopardi Poisson 
Africa, Kenya Col., 28 miles N. of Nairobi, Thika River 
Falls, Feb. 20, 1948, F. X. Williams, 4 3 3,6 9 9 (Mus. 
Comp. Zool., Harvard) ; 1 3,1 9 (F. H. Snow Coll.). 
Hydrometra poissoni n. sp. 
Size and color: Length 9.24 mm. to 9.54 mm. (males). 
The general color is dark brown. The head nearly black with 
a faint longitudinal frosted line on the postocular space; 
the pronotum with a narrow longitudinal median frosted 
line bordered successively on each side by a dark, nearly 
black, purplish-brown band, a brown band, another dark 
purplish-brown band, outside of which is a frosted line ; the 
hemelytra have two longitudinal white lines, one slender 
