136 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



the antennae; clypeus coarsely, rugulosely punctured; inner margins of 

 eyes sinuate opposite the antennal fossae; front and vertex polished and 

 very minutely punctate; mesonotum polished, minutely punctate, im- 

 pressed medially; notauli strongly impressed anteriorly, prescutum trun- 

 cate and prominent; pronotum laterally polished, minutely punctate and 

 somewhat rugulose; mesopleura polished, punctate below and anteriorly, 

 a short, broad impression in the position of the sternauli, prepectal carina 

 distinct and approximating the anterior edge of the pleura about half 

 way up; metapleura sparsely punctured anteriorly, scabrous posteriorly; 

 propodeal carina? strong, basal median and lateral areas polished, all other 

 areas, especially the apical ones, more or less roughly sculptured; first 

 tergite about as wide apically as long, dorsal carinse sharp and extending 

 two-thirds of way to apex, polished between carinas, otherwise punctate, 

 especially laterally toward the apex; second tergite basally fine, rugulose- 

 ly punctate, apically together with the remaining tergites minutely punc- 

 tate, polished; ovipositor nearly perpendicular, barely extending above 

 the dorsum; subdiscoidal vein of hind wing nearly interstitial with lower 

 end of nervellus. 



Black, with coxa; black, the front and middle ones pale at apex; mandi- 

 bles at base and teguke pale; clypeus piceous at sides; abdomen more or 

 less reddish on the sides apically; legs red with trochanters, front and 

 middle femora apically, front and middle tibiae and tarsi and hind tibiae, 

 except apices, paler; hind tibia? at apex and hind tarsi fuscous; wings 

 dusky, veins and stigma fuscous. 



Male. Very like the female with a somewhat greater tendency to red 

 on coxa^ and abdomen, and with the antennae paler beneath at base. 



Host: Caliroa (Eriocampoides) cerasi L. 



Type locality: North East, Pa. 



Type: Cat. 'No. 19154, U. S. N. M. 



Described from six females and four males (Quaintance No. 

 10934) taken by the writer August 26 and Sept. 5, 1914 on cherry 

 trees badly infested by the pear slug, paratype a in the act of 

 ovipositing in a nearly full-grown slug. 



This species shows some variation in the color of the abdomen 

 and coxa? and in the sculpture of the propodeal areas, pleurae, 

 and tergites, the color varying toward reddish-piceous and the 

 sculpture showing more or less reduction on the parts mentioned. 

 Paratype b exhibits some curious abnormal characters. In this 

 specimen, a female, the prescutum is impressed anteriorly; the 

 propodeum is very short, the basal areas being almost entirely 

 obliterated; and the abdomen and legs are much shorter and 

 stouter than in a normal specimen. 



