^Ir. W. L. Distant on Ilomoptcra. 293 



lateral marp;ins of clypcus distinctly carinate; antennae 

 rol)ust, lonnrjy prodiicetl, inserted a little beneath eyes, apical 

 joint longest and stoutest; pronotuin somewhat long and 

 tricarinate, the carinatod area convcxiy produced between 

 the eyes, the posterior margin angularly sinuate, lateral 

 margins oblique ; niosonotuin al)0ut as long as pronotum, 

 tricarinato, the lateral carinations inwardly obliquely bent 

 behind middle and ji)ining the central carination at base; 

 femora slightly dilated, beneath strongly centrally carinate; 

 posterior tibiaa with five spines, the first near base, the fifth 

 and largest at about one fourth from apex; tegmina narrow, 

 the costal margin slightly undulate and convex, apical 

 margin roundetl, claval area inwardly angularly widened and 

 subobliquely narrowed to apex, beyond claval apex again 

 slightly widened, costal area obliquely transversely veined 

 from about middle, radial area obliquely transversely veined, 

 apical area longitudinally veined and containing a few obscure 

 transverse veins, at the base of apical area and from beneath 

 radial area an irregular dividing-line formed of transverse 

 veins, claval vein not reaching apex of claval area; wings 

 about twice as broad as tegmina, and containing an irregular 

 series of subapical transverse veins. 



In his description of this genus Walker makes no mention 

 of the five spines to the posterior tibia?, and iu his figure of 

 the typical species only four are delineated. 



Fowler (Biol. Centr.-Amer., llhynch. Horn. ii. p. 137) 

 places the genus as of uncertain position, and writes it most 

 probably must be placed with the Cixiinse. He, however, 

 also states that the genus in some respects is closely allied to 

 Ilellcoptera. In this latter view I agree, and consider its 

 position is with the Achilinie. 



Rhotala delineata. 



Rhotala delineata, Walk. Journ. Linn. Soc, Zool. i. p. 1-j2, t. vii. fi;;. 6 

 (1857). 



Vertex o£ head and pronotum ferruginous ; mesonotuni and 

 face piceous, the latter with the lateral margins flecked with 

 greyish; body beneath piceous; abdomen above pale testa- 

 ceous, basal segment and anal appendage castaneous brown ; 

 legs pale castaneous brown with ochraceous annulations; 

 tegmina pale greyish brown, the veins so far as cominencc- 

 nicnt of apical area spotted with castaneous, four somewhat 

 large castaneous spots in costal area and two on disk, the 

 dividing-veins at base of apical area suffused with dark 

 castaneous, apical area paler and more unicoloious, with 

 Ann. c£' May. N. llist. Scr. 7. Vul. xix. 21 



