92 
Parasitic Arthropoda 
to do with the human disease. Brumpt has shown experimentally 
that Cimex hemipterus may transmit Trypanosoma cruzi in its excre¬ 
ment. 
Cimex boueti, occurring in French Guinea, is another species 
attacking man. Its habits and general life history are the same as 
for the above species. It is 3 to 4.5 mm. in length, 
has vestigial elytra, and much elongated antennae and 
legs. The extended hind legs are about as long as the 
body. 
Cimex columbarius, a widely distributed species nor¬ 
mally living in poultry houses and dovecotes, C.inodorus, 
infesting poultry in Mexico, C. hirundinis, occurring in 
the nests of swallows in Europe and Oeciacus vicarius 
(fig. 1 gi) occurring in swallow’s nests in this country, 
sangu°isugus nus are species which occasionally infest houses and attack 
man. 
Conorhinus sanguisugus , the cone-nosed bed-bug. We have seen 
in our consideration of poisonous insects, that various species of 
Reduviid bugs readily attack man. Certain of these are nocturnal 
and are so commonly found in houses that they have gained the 
name, of “big bed-bugs.” The most noted of these, in the United 
States, is Conorhinus sangiusugus (fig. 71), which is widely dis¬ 
tributed in our Southern States. 
Like its near relatives, Conorhinus 
sangiusugus is carnivorous in habit and 
feeds upon insects as well as upon 
mammalian and human blood. It is 
reported as often occurring in poultry 
houses and as attacking horses in 
barns. The life history has been 
worked out in considerable detail by 
Marlatt, (1902), from whose account we 
extract the following. 
The eggs are white, changing to 
yellow and pink before hatching. The 
young hatch within twenty days 
and there arc four nymphal stages. 
In all these stages the insect is active and predaceous, the mouth- 
parts (fig. 72) being powerfully developed. The eggs are normally 
deposited, and the early stages are undoubtedly passed, out of doors, 
72. Beak of Conorhinus sanguisugus. 
After Marlatt. 
