62 Mr. W. L. Distant on Homoptera. 



Helochara communis. 



Helochara communis, Fitcli, Horn. N.Y. State Cab. p. 56 (1851) ; Van 

 Duz. (part.) Traus. Am. Ent. Soc. xxi. p. 280 (1894) ; Ball (part.), 

 Proc. Iowa Acad. Sci. viii. p. 62, t, vi. fig. 1 (1901). 



Tetiitjonia similis, Walk. List Horn. iii. p. 769 (1851). 



The type of T. siinilis, Walk., conclusively proves that it is 

 a synonym of H. communis, Fitcli, while the type of T. he?'- 

 bida, Walk., equally shows that it has no affinity with this 

 species. Signoret was perfectly correct in his identification 

 of these species. Walker mixed up the unlocalized type of 

 his T. herbida with specimens of his following species, 

 T. si7nilis = H. <?omw^M/^^5, while his descriptions are faulty, he 

 apparently having confused his descriptions as well as his 

 specitnens. The types, however, settle the question, as tliey 

 did when Signoret long ago examined them {cf. remarks 

 under Kulla herbida, 'Annals,^ 1908, vol. i, p. 530). 



Under the name T. mollipes there is a specimen of 

 H. communis collected at Ventanas, Mexico, by Forrer. 



Genus Oncometopia. 



Oncometopia, Stal, Hem. Fabr. ii. p. 60 (1869). 



Proconia, Amy. & Serv. Hist. Hem. p. 571 (1843), nee Lcp. & Sew. 



Type, 0. undata, Fabr. 



Oncometopia fuscipennis. 



Oncometopia fuscipennis, Fowl. Biol. Centr.-Am., Rhvnch. Horn. ii. 



p. 230, t. xiv. fig. 16 (1899). 

 Oncometopia asp)ernea, Bredd., MS. 



Fowler's figure, as compared with his type, is unsatis- 

 factory ; the colour of the tegmina and the margins of the 

 abdomen are altogether misleading, as can be seen by a 

 comparison with his description. Breddin's specimens are 

 from Ecuador. 



Oncometopia batesi, sp. n. 



Vertex castaneous, with an oblique ochraceous ovate spot 

 on each side of the apical margin (these spots are connected 

 and concolorous with the face beneath) ; pronotum ochra- 

 ceous, anterior margin (broadly) and posterior- margin 

 (narrowly) castaneous, the first sinuate behind; scutellum 

 castaneous, with a discal piceous quadrate spot and a small 

 obscure spot of the same colour near eacii basal angle, apical 

 area ochraceous ; abdomen above black, the lateral margins 



