AMERICAN HYMENOPTERA. 421 



be one on the apex of the third and fourth ; there may be a yellow line 

 on the apex of the pronotum ; and the head and abdomen and, to a 

 less extent, the thorax and hind coxae may be dark green metallic 

 tinted. 9 and d\ Length 9-10 mm. 



Closely covered with white pubescence and closely distinctly punc- 

 tured, the punctures on the vertex almost forming reticulations. Hinder 

 ocelli separated from each other by almost the same distance as they 

 are from the eyes; the vertex behind them raised into a keel. Eyes 

 converging below, their inner side above the middle with a slight inci- 

 sion or curve. Apex of the clypeus transverse, its sides rounded. 

 Antennae entirely black or rufous beneath. The amount of the rufous 

 and yellow color varies, e. g. y the yellow may be absent from the pro- 

 notum and the rufous from the hind coxae. Hind coxae closely, dis- 

 tinctly punctured. Post-scutellum triangular, with distinct outer edges, 

 the centre being depressed. 



Mendoza, November. 



Of the described species L. bicanaliculata comes nearest to 

 L. distinguenda Schlett., from Brazil, e. g., in that species the 

 ovipositor reaches to the middle of the first abdominal seg- 

 ment, the hind coxae are smooth above and the abdomen bears 

 on yellow bands. 



3. Leucospis varicollis sp. n. 



Black, densely covered all over with long white pubescence, the 

 underside of the antennal scape, a line on the hinder edge of the pro- 

 notum, a curved line of the same width on the apex of the scutellum, 

 a line, twice wider, on the apex of the second abdominal segment, 

 a much wider one on the apex of the third, roundly incised at the 

 apex, the sides from the apex, obliquely widened and prolonged back- 

 wards beyond the central part, which is transverse, a curved line, nar- 

 rowed towards the apex, on the upper basal half of the hind femora, 

 the apices of the four front femora, a line round the hinder femora, 

 except near the base of the tibiae, where it is interrupted, the line on 

 the lower part being wider than it is on the top, especially on the 

 oblique basal half, the four front tibiae, except for a line behind and 

 the tarsi, yellowish white. Femora with ten teeth, the basal foursmall 

 and closely pressed together. Wings hyaline, the apex clouded, and 

 there is a narrow cloud along the apex of the costa; the nervures 

 black, o". Length 7 mm. 



Sides of the face broadly and the lower of the front less strongly, 

 closely longitudinally striated, the striae more or less interwoven. Face in 

 the middle above shining and distinctly punctured. Clypeus except at 

 the apex longitudinally striated, the lower half and the apex bordered by 

 a smooth flat line, the lower line rounded and ending in the middle in 



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



