from the Mesilla Valley, Xew Mexico. 395 



when seen from above a small denticle is visible on the inner 

 side. Abdomen almost bare, what little pubescence there is 

 is black, except some pale pubescence at base of first segment. 

 Apex with very dark blackish-brown hairs. Pjgidium 

 rufescent at base, narrow at end, longitudinally sulcate on 

 each side. 



(^ . — Length 16 millim. 



Eyes olive-green ; clypeus and labrum bright lemon- 

 yellow ; scape wholly dark ; mandibles dark reddish brown, 

 with black tips ; claw-joints rufous ; legs with more pale 

 pubescence ; hind femora broad, the pubescence without pale, 

 except at end. Apex of abdomen with pale hairs. 



Var. nov. rhodopus. 



? . — Length 12-loi millim. 



Scape rufous in front ; mandibles sharp at tip; femora and 

 tibiae rufous. Segments 2 and 3 of abdomen with narrow 

 lateral pale hair-bands on hind margin. 



cJ.— Length 11^-121 millim. 



Scape yellow in front. Mandibles more or less yellow 

 without. A small yellow spot on each side between clypeus 

 and orbital margin. Legs more or less rufous. Hind 

 femora with the long hairs on outer side white, strongly 

 contrasting with the spreading black hairs of the first tarsal 

 joint. First segment of abdomen covered with pale almost 

 silvery pubescence. Segments 2 to 4 with lateral apical 

 white bands, that on 2 becoming very broad at the side. 

 Wings clear. 



Hah. Mesilla Valley, New Mexico. A typical female was 

 taken by the late Mr. S. Steel at Las Cruces, May 17, some 

 years ago. This year, on May 18, I caught on the College 

 Farm, at flowers of Coesalpinia falcaria, 3 ? , 1 J' of the 

 type, and 2 $ , 2 (5" of the var. rhodopus. It is probable 

 that the var. rhodopus represents a distinct species. 



Centris Uoffmanseggice^ sp. n. 



(J . — Length 12 millim. 



Black, with white pubescence, that on thorax above tinged 

 with ochraceous. Eyes greyish, front narrow, hardly as 

 broad as an eye, scape wholly black ; clypeus, a line above 

 transversely, labrum, and basal portion of mandibles yellowish 

 white. Mandibles rufous at the junction of the white with 

 the black ends ; a strong inner denticle. Clypeus bare, with 

 sparse shallow punctures. Pubescence of thorax dense. 

 Tegulae reddish testaceous. Wings hyaline, nervures and 



