244 p. (CAMERON. 



I 



I Hemitelini. 



■^ Olaciistes iii§^ro-oi'iiatu»i sp. nov. 



Reddisl), the aiiteunge paler; the basal half of metanotum, the apical slope 

 broadly in the middle aud the fifth aud followiug segments of the abdomen 

 black ; legs colored like the body, the hind tibiae and tarsi somewhat infuscated ; 

 wings hyaline, a band as wide as the stigma, narrowed in front, on eitherside of 

 the transverse basal and median uervures, and a wider fuscous cloud commenc- 

 ing near the base of the stigma (which is white) and ending at the apex of the 

 radius and with a small hyaline cloud at the upper half of the apex of the 

 stigma; the nervu res and stigma, except at the base, black. 9- Length 5 mm. ; 

 terebra 1 mm. 



Face distinctly shagreened, the clypeus less strongly so, clearly separated ; the 

 front aud vertex distinctly shagreened ; the ocelli in a triangle, the hinder sepa- 

 rated from each other by about the same distance as they are from the eyes. 

 Mandibles largely tinged with yellow. Palpi black. Mesonotum shagreened, 

 darker on the apical half. Metanotum shagreened, the apical slope smooth aud 

 shining; near the base is a transverse keel, which projects backwards in a trian- 

 gle in the middle; there is a semicircular keel round the top of the apical slope, 

 which has a straight, oblique slope; the metapleurse more shining and smoother 

 than the rest. First abdominal segment shagreened, blackish at the apex; the 

 second less strongly and the third still more weakly shagreened ; the others 

 smooth and shining. Basal abscissa of radius straight, the apical (and larger) 

 curved ; the cubitus slopes down obliquely to unite with the recurrent nervure. 

 Tiiere are at least nineteen joints in the antenna;; the apical unfortunately are 

 missing; the elongated basal two joints of the antennae are equal in length ; the 

 third is slightly shorter. 



San Mateo Co., California (Baker). 



Allied to 0. periliti Aslini., from the District of Columbia. 



Phyg.-^deuonini. 

 _^ Stiboscopus erythi*u!i>toniu» sp. nov. 



Black ; the antennse, clypeus, labrum, mandibles and the second and thiid seg- 

 ments of the abdomen, red ; the antennse darker colored towards the apex ; the 

 apical segment of the abdomen white; wings hyaline, the stigma and nervuies 

 fuscous; tegulse white. J. Length 5 mm.; ovipositor nearly 1 mm. 



Face finely, but distinctly punctured in the centre; the clypeus obscurely, 

 finely punctured above, the rest smooth ; the front and vertex shagreened. The 

 mesonotum closely punctured, more weakly round the edges, the punctures dis- 

 tinctly separated ; the scutellum is as distinctly, but less strongly, jiunctured. 

 Metanotum opaque, coarsely shagreened, almost punctured. Pieunv closely 

 punctured, moi-e closely than the mesonotum, almost rugose. Abdomen clearly 

 longer than the head and thorax united, smooth, shining, the middle segments 

 obscurely shagreened ; the ventral surface is of a duller red than the top band ; 

 the ovipositor distinctly projects. 



Mountain.s near Claremout, California (Baker). 



This species agrees very well with the definition of iStibo.iCopus 

 given by Prof. Schmiedeknecht in his admirable "Opuscula Ichneu- 

 monologia," p. 606, but differs in one respect from that of Ashmead 



