210 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I4I 



Experimental vector. — Periplaneta americana, Gold Coast Colony 

 (Macfie, 1922). 



*Necator americanus (Stiles, 1902) Stiles 1906 



Natural vector. — Periplaneta americana, India (Chandler, 1926). 

 Experimental vector. — Periplaneta americana, Gold Coast Colony 

 (Macfie, 1922). 



* Hookworm ova 



Experimental vectors. — Periplaneta americana, Periplaneta austra- 

 lasiae, Neostylopyga rhombifolia, Formosa (Morischita and Tsuchi- 

 mochi, 1926). 



Family TRICHOSTRONGYLIDAE 



* Trichostrongylus sp. 



Natural vector. — Blatta orientalis, Italian Somaliland (Mariani 

 and Besta, 1936). 



Order TRICHUROIDEA 

 Family TRICHURIDAE 

 * Capillaria hepatica (Bancroft, 1893) Travassos, 1915 

 Experimental vector. — Blatta orientalis, Italy? (Giordano, 1950). 



* Trichuris trichiura (Linnaeus, 1771) Stiles, 1901 



Natural vectors. — Blatta orientalis, Italian Somaliland (Mariani 

 and Besta, 1936) ; U.S.S.R. (Sondak, 1935). 



Blattella germanica, U.S.S.R. (Sondak, 1935). 



Periplaneta americana. Gold Coast Colony (Macfie, 1922) ; Formosa 

 (Morischita and Tsuchimochi, 1926). 



Experimental vectors. — Periplaneta americana. Gold Coast Colony 

 (Macfie, 1922) ; India (Chandler, 1926) ; Uruguay (Perez Fontana, 



1955)- 

 Periplaneta americana, Periplaneta australasiae, and Neostylopyga 



rhombifolia, Formosa (Morischita and Tsuchimochi, 1926). 



XII. ARTHROPODA 



The classification follows Brues et al. (1954) with the following 

 exceptions. The Acarina are arranged according to Dr. J. H. Camin 

 (personal communication, 1955). Family Eupelmidae of the Hymen- 

 optera follows the classification of Peck (1951). 



