ODYNERUS. 345 



141. O. Peyroti Sadss. — Niger, argenteo-sericeus, confertim puncta- 

 tus ; abdouiine niagis tenuiter punctata; pionoto bidentato, postice 

 tenuiter fulvo lirabato ; scapi fascia, post-scutelli fascia abdominisque 

 segmentorum 2'-6' marginibus late, ochraceis ; priiuo segmento tiigonali- 

 cupiliformi, tenuiter fulvo-liinbato ; pedibus nigris, anticis antice flavis 

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

 % . Clypeo bidentato, orbitarum margine interne-, luteis ; anteunis subtus 

 fulvis. 



Odyn. Peyroli Saoss. Revue de Zoologie, IX, 1857, 278. 

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



9 . 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 tbe 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-yellow; 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, bidentate, pale-yellow, argenteous. 

 Antennas black, fulvous beneath ; the scape and inner orbits with 

 a yellow line. Metathorax quite black. The first segment 

 smaller, more triangular. The edge of the second segment a 

 little reflexed. 



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



6. No frontal nor post-ocular spots. 



