278 [September 



9. Tryphon seminiger, n. sp. 



Black : face silvery ; mouth yellowish ; legs and abdomen, except base, ru- 

 fous ; wings subhyaline, areolet oblique, petiolated ; abdomen subsessile, sub- 

 clavate. 



Female. — Black, thinly clothed with very short whitish pubescence, 

 more obvious and silvery on the face ; clypeus, mandibles and palpi 

 dull yellowish ; antennae two-thirds the length of the body, black above, 

 brownish beneath ; tegulfe dull yellowish ; metathorax with the elevated 

 lines irregular, tolerably well defined. Wings faintly tinged with fuli- 

 ginous ; nervures and stigma black, pale at base ; areolet minute, 

 oblique, petiolated ; 2nd recurrent nervure angular in the middle. 

 Legs obscure rufous, the four anterior tibiae and tarsi tinged with 

 yellowish; coxae black; the posterior femora and tibiae at tips and 

 their tarsi, obfuscated. Abdomen subsessile, clavate, rufous ; basal 

 segment black, except the extreme tip, with two approximate carinas 

 on the middle towards the base. Length 3? — 4 lines ; expanse of wings 

 6 — 6J lines. 



Hah. — Illinois. Dr. Samuel Lewis. 



Closely resembles the two preceding species in form and color, but 

 is at once distinguished by the sculpture of the metathorax, which in 

 this species is irregular and not sharply defined, while in the other two 

 there are four very sharply defined and regular longitudinal carinae. 



10. Tryphon semirufus, n. sp. 



Black: tegulfe yellow; legs and abdomen rufous; wings hyaline, areolet 

 wanting ; abdomen subsessile, subovate. 



Female. — Black ; clypeus polished, with large deep punctures ; spot 

 on mandibles at base and the palpi, yellowish ; antennae two-thirds the 

 length of the body, brown-black, the basal joint beneath rufous; tegulae 

 pale yellowish ; metathorax with the elevated lines irregular and ill- 

 defined, the centi'al area small and elongate, subobsolete. Wings hya- 

 line, iridescent; nervures and stigma blackish, pale at base; areolet 

 wanting; 2nd recurrent nervure straight. Legs, with the coxae, ru- 

 fous ; apical half of the posterior femora blackish, their tarsi obfuscated. 

 Abdomen rather short, subovate, subsessile, somewhat flattened above, 

 the apex slightly compressed and tinged with blackish. Length 3 

 lines ; expanse of wings 5 lines. 



Hah. — Illinois. Dr. Samuel Lewis. 



