202 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I4I 



Ransom (in Pierce, 1921) states that G. aquaticus may be an acci- 

 dental parasite of man. Faust (1955) summarizes the few reported 

 cases of human parasitism. Dorier (1930) reported that the re- 

 gurgitated liquid of Blatta orientalis had no effect on cysts of G. aquat- 

 icus after one hour. 



Gordius blattae orientalis Diesing, 1851 



Synonynny. — Gordius orientalis of Lankester (1865). 



Natural host. — Blatta orientalis, Germsiny (Siebold, 1842; Linstow, 

 1878) : Found in abdomen. Von Siebold called this "Filarien" but 

 did not otherwise name or describe the worm. 



Gordius pilosus (Mobius, 1855) Diesing, 1861 



Synonymy. — Chordodes pilosus Mobius, 1855 [Diesing, 1861]. 

 Natural host. — Blaberus giganteus, Venezuela (Mobius, 1855) : 

 From the insect's abdomen. 



Gordius sp. 



Natural hosts. — Periplaneta americana, South Africa (Porter, 

 1930) ; Germany (Bode, 1936) : Bode's record may have referred to 

 a Mermis or other nematode. 



Cockroaches, Venezuela (Miall and Denny, 1886; Burr, 1899a; 

 Tejera, 1926). 



Parachordodes raphaelis (Camerano, 1893) Camerano, 1897 



Synonymy. — Gordius raphaelis C^LVCitrdino, 1893 [Camerano, 1897]. 

 Natural hosts. — Symploce parenthesis and Kuchinga hemerohina, 

 French Equatorial Africa (Camerano, 1893, 1897). 



Undetermined gordian worms 



Natural hosts. — Eurycotis floridana, Florida (T. Eisner, personal 

 communication, 1958) : See plate 29, B. 



Parahormetica hilohata, Brazil (Pessoa and Correa, 1929) : Worm 

 referred to as "gordiaceo." 



Cockroaches, Australia (E. F. Riek, personal communication, 

 1953) : Three undescribed gordian worms were found in undeter- 

 mined cockroaches of the subfamily Blattinae. 



