NO. I0 COCKROACHES—ROTH AND WILLIS ELE 
Cockroaches were unsuitable intermediate hosts for the following 
nematodes : 
Angiostrongylus cantonensis (Chen) 
Definitive hosts —Wild and laboratory rats. 
Cockroaches.—Blattella germanica, Pycnoscelus surinamensis, 
Periplaneta ignota. (Mackerras and Sandars, 1955.) 
Cheilospirura hamulosa (Diesing, 1851) Diesing, 1861 
Definitive hosts —Chicken, turkey. 
Cockroaches.—Blattella germanica (?). (Cram, 1931a, 1931D.) 
Pycnoscelus surinamensis. (Alicata, 1938a.) 
Cheilospirura spinosa Cram, 1927 
Definitive hosts—Ruffed grouse, bobwhite quail. 
Cockroach.—Blattella germanica (?). (Cram, 1929, 19314.) 
Dispharynx spiralis (Molin, 1858) Gedoelst, 1916 
Definitive hosts—Hungarian partridge, ruffed grouse, bobwhite 
quail, turkey, chicken, pigeon, guinea fowl. 
Cockroach.—Blattella germanica (?). (Cram, 1931a.) 
Skrjabinoptera phrynosoma (Ortlepp, 1922) Schulz, 1927 
Definitive host—Texas horned toad. 
Cockroach.—Blattella germanica. (Lee, 1955, 1957.) 
Spirocerca sanguinolenta (Rudolphi, 1819) Seurat, 1913 
Definitive host—Dogs. 
Cockroaches.—Blatta orientalis, Periplaneta americana, Periplaneta 
australasiae. (Faust, 1928.) 
