p. CAMERON. 329 



the sides and then more narrowly and irregularly towards the centre, a trans- 

 verse line, about three times longer than wide, on the sides of the 2ud segment 

 and the greater part of the tibiae, pale whitish yellow ; the tarsi rufous. Wings 

 hyaline, the costal cellule tinged with fulvous, the radial cellule smoky, the 

 radius, costa, stigma and post-costal nervures bright fulvous. 9. Total length 

 12 mm. 



First abdominal segmentcup-shaped, smooth, slightly narrowerthan thesecond, 

 which is clearly wider than long and lias its apex slightly incurved ; the punc- 

 tuation becomes gradually from the base towards the apex, the apices of the seg- 

 ments being more strongly punctured than the rest. Head as wide as the thorax, 

 the upper part of the head and the thorax closely, strongly punctured. Ciypeus 

 shining, sparsely weakly punctured, pyriform, a little longer than wide, the apex 

 depressed, slightly broadly incised. Base of thorax slightly, broadly, roundly 

 dilated in the middle. Base of post-scutellura raised, forming a broad rugose 

 ridge, its apical slope smooth, transverse. The flat upper part of the metanotum 

 forms a curved rugose ridge on the outeredge, ending in a blunt projection, from 

 which the lower side retreats obliquely ; down the centre of the metanotum is a 

 raised smooth line ; the part bordering this is distinctly, but not strongly obliquely 

 striated. The thorax is somewhat more than twice longer than wide, and is as 

 long as the abdomen. The pubescence is short, close and white; the furrows on 

 the apex of mesonotum are indistinct. Below the apex of the post-scutellum is 

 a smooth, triangular tongue, which runs into the smooth line in the centre of 

 metanotum. The seven or eight basal joints of the flagellum are brown below. 



New Mexico. This species shown an approach to tlie section 

 Hypodernus, but has not the body densely haired as in that species. 



Odyiierii;^ seqiialis sp. nov. 



Black, the ciypeus except for an irregular black mark, rounded above, obliquely 

 narrowed below, in its centre, a mark, broader than long, rounded above, trans- 

 verse below, over the antennae, a line on the outer orbits, gradually narrowed 

 below, extending from top to bottom, yellow, tinged with rufous, the base of 

 thorax (the mark ou the sides occupying the basal lateral half of pronotum) 

 tegulce, a small spot on sides of scutellum in the middle, post-scutellum, a mark, 

 broadly dilated inwardly at the base, on the basal half of metanotum, and a 

 small conical mark below the tegulaj, rufous. Abdomen yellow, the basal two 

 segments tinged with rufous; the 1st with the basal slope, the black part having 

 attached to its apex, a broad transverse mark, narrowed on either side at the 

 base, the 2nd with a broad transverse mark, extending to shortly beyond the 

 middle and with a rounded incision in the middle, its base extending to the outer 

 edge of the segment, the apical part much narrower but as long, the basal half 

 of the 5th and 6th segments, a narrow line on the base of the 4th and the base 

 of the ventral narrowly black. Legs rufo-fulvous, the coxae, trochanters and base 

 of femora black. Wings fuscous violaceous, the costa and nervures black, the 

 stigma dark fulvous. J. Length 12 ram. 



Ciypeus pyriform, as broad as long, strongly, closely punctured, the apex 

 depressed, rufous. Head and thorax closely, strongly punctured, thickly covered 

 with fuscous pubescence. Thorax not quite twice longer than wide, transverse 



TKANS. AM. ENT. SOC. XXXII. (42) DECEMBEH, 1906. 



