ODYNERUS. 345 



141. O. Peyroti Saoss. — Niger, argentco-sericeus, confertim pnncta- 

 tus ; abdomine magis tenuiter punetato ; pronoto bidentato, postice 

 tenuiter fulvo Iirabato ; scapi fascia, post-scutelli. fascia abdominisque 



segmentorum 2'-6'' marginibus late, oobraceis : pritno segtnento trigonal i- 

 cupiliformi, tenuiter fulvo-litnbato ; pedibus nigris, atiticis antice flavis 

 vel fulvis. — 9 . Clypeus superne macula flava, punctis capitis flavis. — 

 % . Clypeo bidentato, orbitarum inargine interno, luteis ; antennis subtus 

 fulvis. 



Odyn. Peyroti Sauss. Revue de Zoologie, IX, 1857, 278. 

 % . Total length, 9 mm. ; wing, 6.5 mm. 



? . Clypeus bicarinate. Thorax short. Angles of prothorax 

 dentiform. Metathorax rounded ; its concavity small, rounded, 

 strigate-punctate. Head and thorax densely punctured ; the 

 metathorax more velutinous, not so strongly punctate. Abdo- 

 men not sessile ; the -first segment not truncate anteriorly, but 

 triangularly rounded, cup-shaped, nearly funnel-shaped, about as 

 wide as long. The second rather short, its margin more strongly 

 punctured, the rest more finely punctured than the thorax ; the 

 first segment scarcely more strongly punctured than the 2d. 



Black, grayish-silky, with a strong reflection on head and 

 metathorax. A spot on the superior part of clypeus, a line 

 under the scape, a frontal ocular and post-ocular spot, a very 

 narrow line on the posterior margin of prothorax, and its angles, 

 fulvous ; a line on post-scutel, edges of metathorax, the narrow 

 margin of the 1st abd. segment, and a broad one on the 2d-6th, 

 ochre^ellow; anus black, or margined with yellow. Feet black, 

 the anterior pair fulvous anteriorly. Wings hyaline, brown at 

 the extremity, slightly ferruginous at base; nerves brown or fer- 

 ruginous. 



Var. a. Both edges of prothorax margined with yellow. 



b. A yellow spot under the wing. 



c. Anterior edge of prothorax black. 



d. Metathorax immaculate. 



e. Wings somewhat ferruginous. 



%. Clypeus longer than wide, bidentato, pale-yellow, argenteous. 

 Antenna} black, fulvous beneath; the scape and inner orbits with 

 a yellow line. Metathorax quite* black. The first segment 

 smaller, more triangular. The edge o( the second segment * 

 little reflexed. 



Var. a. The first segment scarcely margined with fulvous. 



b. No frontal nor post-ocular spots, 



