560 FAMILY XIX. — REDUVIID>E. 



534 (747). RASAHUS biguttatus (Say), 1832, 13; I, 307. 



Very similar to ha mat us; the chief differences as in key. Color 

 variable, the head and pronotum often reddish-brown, sometimes with 

 front half of latter black and hind one brown. Membrane blackish with 

 a large oval or rounded yellowish spot at middle. Connexivum in both 

 sexes with wide alternate blackish and yellow spots; legs usually reddish- 

 yellow, paler at base, often in great part blackish. Length, 16 — 20 mm. 



Everglade, Fla., April (Doris) . Delhi, Cal., May 6 (Gerhard) . 

 Recorded by Barber from eight Florida stations between 

 Ormond and Everglade. Ranges from North Carolina south- 

 west to Florida, Louisiana, Texas and the West Indies. It is 

 very doubtful whether Say's species is more than a color form 

 of hamatus. Both vary widely in the yellow markings of elytra 

 and legs. The only structural difference between the two seems 

 to be the narrower form of the males of hamatus. 



III. Sirthenea Spinola, 1840, 100. 



Elongate, rather robust species having the front of head pro- 

 longed, porrect, its sides declivent and tylus forming a ridge 

 along the crest ; eyes rather small, not prominent ; beak with 

 second joint longer than the others united ; pronotum with 

 front lobe but little narrower than hind one, the former with 

 seven, the latter with two sulci ; elytra, when present, some- 

 what shorter than abdomen ; front coxse stout, nearly as long as 

 head ; front femora and tibiae bristly hairy, much swollen, 

 flattened within, the latter with apical spongy plate very large ; 

 middle and hind legs short, stout. One species is known from 

 North America and our territory. 



535 (750). Sirthenea carinata (Fabricius), 1798, 545. 



Elongate, subparallel. Head, pronotum, scutellum and under sur- 

 face black or piceous ; clavus, inner margin of corium and membrane dark 

 brown; corium, except inner margin, beak and legs, reddish-yellow; 

 antennae fuscous, the basal joint yellow; connexivum with margin, both 

 above and below, in part reddish-yellow. Head and margins of prono- 

 tum with numerous erect hairs. Basal joint of antennae stout, subclavate, 

 slightly curved, reaching tip of tylus; joints 2 and 4 subequal in length, 

 3 one-third shorter than either. Scutellum with an obtuse ridge each side, 

 these merging to form a short, compressed apical spine. Sides of abdo- 

 men strongly reflexed. Length, 18 — 25 mm. 



Vigo and Posey counties, Ind., Feb. 21 — Sept. 9, nymphs 

 only. Ormond, Moore Haven, R. P. Park, Sarasota and Dune- 

 din, Fla., November — April. Although I have taken scores of 



