248 
KEPORT ON ECONOMIC ENTOMOLOGY 
El)-HUGS 
Cunex lectulartns, ijiuii., and Cinn'x rotundiitiiSj big. 
Owing to the part they play in the transmission of the disease known as kala-azar, 
bed-lmgs have recently sprung into considerable prominence. 
The only species that has lieen found in the Sudan up to the present is tret atari,is 
(Fig. 53), liut for purposes of comparison the Indian bed-bug, ('. rotnadutns (Fig. 54), is also 
here illustrated. 
Bed-bugs spend most of their time hidden in cracks in bedsteads, crevices in the walls 
of huts, and similar places, where they wait until a suitable host presents itself. They will 
feed eijually readily liy night or by day, and are not particular as to their hosts, although 
probably man is preferred. The eggs — white, flask-shaped bodies — are deposited by the 
females in their hiding-places, and the tiny active larval are ready for their first meal of 
blood shortly after their escape from the egg. 
The two species — F. lectutarius and rutuitdiUtis — can bo readily distinguished Ijy 
the shape of the prothorax. In (t. rotundatas the dorsal surface of this region is uniformly 
convex, while in C. lecftda.rius tlie lateral edges are flat, or even, in some oases, slightly 
concave. 
A paper, in which these two bed-bugs are described and illustrated, has recently been 
published by Capt. W. S. Patton, M.B., I.M.S., and I am indebted to him for the 
specimen from which the above figure of C. rutandatns was taken. 
