90 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 134 
Polyphaga saussurei, Tadzikhistan (Zmeev, 1936): In two in- 
stances, a single egg of Hymenolepis sp. was found in the cockroaches’ 
intestines. In one, the egg was deformed while in the other it was 
undamaged. In the area where these insects were collected, numerous 
rats (Nesokia indica) were commonly infected with Hymenolepis 
diminuta. 
Family TAENIIDAE 
Taenia saginata Goeze, 1782 
Common name.—The beef tapeworm. 
Disease.—Beef tapeworm infections. 
Experimental vectors.—Periplaneta americana, Gold Coast Colony 
(Macfie, 1922): The eggs passed unharmed through two of four 
cockroaches; in one only shrunken eggs were seen, and in the fourth 
no eggs were found. There were few eggs in the human feces used 
in these experiments. 
Family Unknown 
Undetermined tapeworm eggs 
Natural vectors—Polyphaga saussurei, Tadzhikistan (Zmeev, 
19360): Eggs similar to cestode eggs (Taenioidea) found in humans 
were found in the intestine and appeared to be uninjured. Several 
cestode eggs were found in 2 of 154 cockroaches which had been col- 
lected in ruined houses heavily contaminated with feces. 
Phylum ASCHELMINTHES 
Class NEMATODA 
Order OXYUROIDEA 
Family OXYURIDAE 
Enterobius vermicularis (Linnaeus, 1758) Leach in Baird, 1853 
Common name.—Human pinworm or seatworm. 
Disease.—Enterobiasis or oxyuriasis. 
Natural vectors ——Blatta orientalis, U.S.S.R. (Sondak, 1935): In 
the 412 cockroaches examined, one egg was isolated from the rectum 
of a specimen caught in a buffet. 
Blatiella germanica, U.S.S.R. (Sondak, 1935): In the 788 cock- 
roaches examined, one egg was isolated from the rectum of a specimen 
caught in a bakery and another in a specimen caught in a factory 
kitchen. 
