818 REPORT OF THE HARVARD AFRICAN EXPEDITION 
segment about half as broad as the first but slightly longer; third segment about two-thirds as 
broad as second segment and slightly longer than broad. This third segment is indistinctly divided 
about its middle and bears distally two prominent tactile setae, the outer of which is longer than 
the palpus itself. Chelicera with two chelae, each being modified into a sharp, tapering piercer, 
outer chela with a prominent elbow near its base and a long, curving, lance-like distal part; Inner 
chela smaller than outer and without the elbow. Dorsal plate long, eggshape in outline and com- 
pletely covering the cephalothorax above. It is well scleritized, extends backward past the fourth 
pair of coxae and bears about a dozen, short, subequal setae. Ventral plate irregularly diamond- 
shape, with three pairs of setae; first pair subapical; second pair situated just in front of lateral 
angles of plate near margin of same; third pair near posterior end, tips of setae themselves extending 
beyond tip of plate. Anal plate eggshape in outline, somewhat angulate behind; anal opening a 
little more than a third as wide as anal plate is broad; the two paired anal setae slightly longer than 
the single posterior seta, and situated slightly in front of anterior rim of anal opening. Spiracles 
surrounded with irregularly scleritized, bulblike walls. They are situated dorsally above the 
posterior coxae just under the lateral margins of dorsal plate. Tarsal claws well developed, par- 
ticularly those of legs II and III; first pair of tarsal claws appressed; second and third pairs large, 
angulate, strongly divergent; fourth pair similar to second and third pairs but smaller and less 
angulate. 
“Tength of nongravid female, 0.61 mm.; width, 0.18 mm. Length of gravid female, 0.87 mm. ; 
width, 0.36 mm.” 
PARASITIDAE 
Laelaps bakeri S. Hirst 
Laelaps giganteus Berlese var. bakeri S. Hirst, 1925, Proc. Zool. Soc. London, I, p. 67, fig. 14 (% 2; 
off several species of rodents, from Algeria, Uganda, Kenya Colony, Nyasaland, Orange Free 
State, and Cape Province). 
LipErIA.— Du River, Camp No. 3, off striped rat, Lemniscomys striatus 
striatus (Linnaeus), July 29, 1926. Gbanga, off Rattus rattus alexandrinus 
(Geoffroy), September 16, 1926. (Identified by Dr. H. Ewing). 
BELGIAN Conao.— Luvungi, off a mouse, Mastomys coucha ugandae (De 
Winton), January 30, 1927. (Identified by Dr. H. Ewing). 
TANGANYIKA TERRITORY.— Vituri, off Rattus delectorum Thomas, Octo- 
ber 29, 1926 (Arthur Loveridge). Amani, off Pelomys fallax fallax Peters, 
November 29, 1926 (Arthur Loveridge). (Determined by Dr. H. Ewing). 
Uluguru Mts., off Pelomys fallax fallax Peters, October 15, 1926 (Arthur Lov- 
eridge). (Identified by Prof. G. F. Ferris). 
This common parasite of various species of rodents is widely distributed 
in Africa. 
SPINTURNICIDAE 
Spinturnix sp. 
Liperta..— Monrovia, off a small bat, Eptesicus tenuipinnis (Peters), July 
16, 1926. 
TANGANYIKA TERRITORY.— Bagilo, off bats, Pipistrellus nanus (Peters) 
and Miniopterus natalensis arenarius Heller (Arthur Loveridge). 
