OF WASHINGTON. 193 



Genus 7. DIPLONYCHUS Laporte de Castelnau. 



1832, Essai Hem., pp. 17, 18. 



Hydrocyrius Spinola, 1850, Mem. Mat. Soc. Modena, xxv, p. 146. 

 Ilyotrephes Stal, 1853, 6fv. Vet.-Ak. Forh., x, p. 264. 



columbiae (Hydrocyrius) Spinola, 1850, Mem. Mat. Soc. Modena, xxv, 



p. 146. 



herculeus (Ilyotrephes) Stal, 1853, Ofv. Vet.-Ak. Forh., x, p. 264. 

 algeriense (Belostoma) Dufour, 1855, Mem. Soc. Ac. Sci. Liege, 



x, p. 187, pi. i, fig. I. 

 capitatum (Belostoma) Guerin, 1856, in Sagra's Cuba, pt. 2, vii, 



P- 175- 

 Habitat : Mexico ; Cuba.* 



Family 11. CORIXID^. 



Genus 2. TENAGOBIA Bergroth. 



1899, Ent. Mo. Mag., xxxv, p. 282. 



fuscata (Sigara) Stal, 1859, Eugenie's Resa, Ins., p. 268. 



Habitat: Brazil, 

 seducta (Sigara) F. B. White, 1879, Tr. Ent. Soc. Lond., p. 275. 



Habitat: Brazil, 

 selecta (Sigara) F. B. White, 1879, Tr. Ent. Soc. Lond., p. 273. 



Habitat : Brazil, 

 signata (Sigara) F. B. White, 1879, Tr. Ent. Soc. Lond., p. 274. 



Habitat: Brazil, 

 simulans (Sigara) F. B. White, 1879, Tr. Ent. Soc. Lond., p. 275. 



Habitat: Brazil. 

 sobrina (Sigara) F. B. White, 1879, Tr. Ent. Soc. Lond., p. 275. 



Habitat : Brazil, 

 socialis (Sigara) F. B. White, 1879, Tr. Ent. Soc. Lond., p. 274. 



Habitat: California; Mexico; Guatemala; Panama; Grenada; 

 Brazil. 



Genus 5. CALLICORIXA F. B. White. 



1873, Ent. Mo. Mag., x, p. 62. 



griffinii (Corixa) Kirkaldy, 1899, Bull. Mus. Zool. Anat. Comp. Torino, 



xiv, No. 350, p. 7, figs. 6-7. 

 Habitat : Ecuador. 



" This genus is placed here in deference to the older authors, the 

 records of the species being those given by Spinola and Guerin. But 

 there are no other references to its American habitat in the literature, 

 nor have either of the authors seen an American specimen. 



