AMERICAN HYMENOPTERA. 429 



closely strongly punctured, the centre of the mesonotum transversely 

 reticulated. Apex of scutellum with a broad rounded projecting mar- 

 gin, which is not incised in the middle. Metanotum closely irregularly 

 reticulated. Pro- and mesopleurae coarsely aciculated, except the apex 

 of the mesopleurae, which is smooth, the metapleurae finely rugosely 

 punctured. 



Mendoza, December. 



12. Octosmicra pilicauda sp. n. 



Black, a spot on the lower side of the front, rounded on the outer 

 side, the upper inner half dilated inwardly and with a straight margin, 

 more or less of the apex of the antennal scape, a line round the apex 

 of the pronotum with a basal short branch on either side of the mid- 

 dle, two lines on the mesonotom along the furrows extending neither 

 to the base nor to the apex, two somewhat triangular marks on the 

 apical half of the scutellum, a band on the centre of the second seg- 

 ment, a broader complete one on the third, the apices of the other 

 segment, the four anterior knees, a large mark, dilated above, roundly 

 curved at the base, extending from the top to the bottom on the inner 

 side of the hind femora on the apical third close to but not touching 

 the apex, the outer side except a large pyriform oblique mark, not 

 touching the top, but reaching to the bottom at the apex of the basal 

 tooth and extending to the third, the apex has a rounded incision on 

 the lower half ; the large basal tooth is yellow; the others are black, 

 and there is a large semi-circular black mark over the apical four teeth ; 

 the basal tooth is large and triangular ; the following three are smaller 

 and clearly separated, the fourth is a little smaller and the following 

 three are short, bluntly rounded and close together. There is a dis- 

 tinct, short tooth on the apex of the hind coxae above. Head, thorax 

 and legs covered with a white pile. Face closely punctured ; the sides 

 of the front strongly obliquely striated, the striae clearly separated. 

 Pro- and mesonotum somewhat strongly punctured; the scutellum, if 

 anything, is still more strongly punctured ; its apex is weakly bilobate. 

 Metanotum strongly irregularly areolated ; there is a larger areola on 

 the centre of the apical slope, widest in the centre, roundly narrowed 

 above and below. Propleurae punctured, but not so strongly as the 

 pronotum. Mesopleurae smooth ; near its base is a slightly oblique 

 closely, strongly striated furrow extending from the top to the bottom. 

 Metapleurae closely reticulated. Abdominal petiole half the length of 

 the hind coxae, smooth, but not so shining and glabrous as the rest of 

 the abdomen. The hypopygium projects as an ovipositor and is halt 

 the length of the second and following ventral segments ; it is sparsely 

 covered with longish pale hairs. Wings hyaline, suffused with fuscous ; 

 the nervures black. 9 Length 8 mm. 



Mendoza, Elgon. November. 



TRANS. AM. ENT. SOC, XXXV. DECEMBER, 1909. 



