p. CAMERON. 331 



of the femora; the middle cosiB broadly yellow on the outer apical part. Au- 

 teiinal scape yellow below. J. Total length 11 mm. 



Clypeus pyriform, as long as wide, strongly punctured, its apex reddish, de- 

 pressed, the sides slightly projecting. Base of thorax not quite transverse, the 

 middle slightly dilated, the sides of the apex almost margined, rough. The 

 punctuation on the head and thorax is strong and close. The 1st abdominal seg- 

 ment is cup-shaped ; the second is as broad as long, its apex reflexed ; the punc- 

 tuation on the 1st and 2nd segments is weak, on the rest coarse and close. The 

 top of the 1st abdominal segment is roughened, but not so strongly as in Ancis- 

 trocerus proper. 



New Mexico. Allied to 0. trichiosomus Cam., which is also from 

 New Mexico. 0. sapellvensis Cam. (also from New Mexico) is a 

 more robust species, has the clypeus less strongly and closely punc- 

 tured, has two longitudinal furrows on the apex of mesonotum, and 

 the 2ud ventral segment has the basal three fourths black, the apex 

 of the black spot not being divided into three broad distinct divi- 

 sions and the lateral yellow marks on the sides of the metanotum 

 are much smaller. 



Odyiieriis pictiTeiitris sp. nov. 



Black ; the sides and apex of the clypeus, a spot wider than long, ending in a 

 point in the middle below, over the antennte, a small mark, narrowed in front, 

 at the base of the mandibles, underside of anteunal scape, a broad line on the 

 base of thorax, a large, broad conical spot below the tegul^e, tegulse except the 

 usual brown spot, two longish lines, separated by the furrow, on the apex of the 

 scutellum, a narrower line on the apex of the post-scutellum, a broad, oblique 

 Hue on the sides of the metanotum on the lower half, broad bands on the basal 

 two abdominal segments and narrower ones on the 3rd and 4th, these lines, ex- 

 cept the basal one, being continued on to the ventral surface, bright orange 

 yellow. Tibije and tarsi rufo-fulvous, the apex of the fore femora yellow lined 

 with yellow, the middle pair more narrowly yellow, the posterior still more nar- 

 rowly, rufous. Wings iridescent, hyaline, the costa and stigma rufo-testaceous. 

 9 . Length 10 mm. 



Head, thorax and base of abdomen densely covered with long fuscous pubes- 

 cence. Clypeus pyriform, as broad as long, its apex depressed ; the black central 

 mark is large, longer than broad, roundly narrowed above, the apex oblique, 

 ending in a narrowed point, longer than broad ; it is separated by a distinct space 

 from the apex of the clypeus. Base of thorax transverse, the sides clearly sepa- 

 rated, the apex with the sides keeled, the keels dilated at the junction of the 

 lower and upper parts. There is a distinct furrow down the centre of the scu- 

 tellum. First abdominal segment cup-shaped, short, the basal slope smooth and 

 shining; the 2nd square, closely, finely punctured ; the apex is more coarsely 

 punctured; the extreme end is slightly thickened. The yellow lines on the 

 ventral segments are broadly dilated in the middle. 



New Mexico. If this species is to be regarded as an Ancistrocerti.-i 

 it would come into Saussure's Section 1. 



TRANS. AM. ENT. SOC. XXXII. DECEMBER, 1906. 



