204 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I4I 



* Moniliformis moniliformis (Bremser in Rudolphi, 1819) Travassos, 1915 



Natural hosts. — Periplaneta americana, Argentina (Bacigalupo, 

 1927, 1927a, 1928); Brazil (Pessoa and Correa, 1929); Algeria 

 (Seurat, 1912) ; Burma (Subramanian, 1927) ; South Africa 

 (Porter, 1930) ; Madras (Sita, 1949). 



Periplaneta spp.. New Caledonia (Rageau, 1956). 



Cockroaches, Venezuela (Tejera, 1^26). 



Experimental hosts. — Blaberus atropos, Blatta orientalis, Blattella 

 germanica, Leucophaea maderae, France (Brumpt and Urbain, 

 1938a). 



Periplaneta americana, Japan (Yamaguti and Miyata, 1942) ; 

 France (Brumpt, 1949) ; Madras (Sita, 1949). 



Phylum ASCHELMINTHES 



Class NEMATODA 



Order OXYUROIDEA 



Family SUBULURIDAE 



* Subulura jacchi (Diesing, 1861) Railliet and Henry, 1914 



Synonymy. — Suhidura jacchi (Marcel, 1857) [Dr. J. T. Lucker, 

 personal communication, 1957]. 



Experimental host. — Blaberus atropos, France (Chabaud and 

 Lariviere, 1955). 



Order SPIRUROIDEA 



Family THELAZIIDAE 



* Oxyspirura mansoni (Cobbold, 1879) Ransom, 1904 



Natural hosts. — Pycnoscelus surinamensis, Australia (Fielding, 

 1926, 1927, 1928, 1928a); U.S.A. (Sanders, 1927, 1928, 1929; 

 Shealy, 1927) ; Formosa (Kobayashi, 1927) ; Antigua (Hutson, 

 1938, 1943) ; Hawaii (Illingworth, 1931 ; Schwabe, 1950, 1950a, 

 1950b, 1 951) ; New Caledonia (Rageau, 1956). 



We have recently found (Roth and Willis, i960) that two strains 

 of Pycnoscelus surinamensis exist; a parthenogenetic strain (from 

 Florida), and a bisexual strain (from Hawaii) which does not re- 

 produce parthenogenetically. The parthenogenetic strain is undoubt- 

 edly the form that has been shown to be the host of O. mansoni in the 

 United States and Antigua, because only this form is found in the 

 New World. Probably the parthenogenetic strain was the form in- 

 volved in most Pacific areas. However, from internal evidence in his 



