86 E. T. CRESSON. 



on second segment abruptly and squarely dilated on each side, and that on 

 third segment slightly and acutely dilated on each side, all yellowish ; clypeus 

 flattened, shining and sparsely punctured; scutellum rather strongly bilobate, 

 the lateral teeth very small; wings fuliginous, apical margins darker; last 

 ventral segment flattened, with apex broadly rounded and slightly recurved. 

 Length .65 inch. 



Hah. — New Mexico, (Yarrow). The single specimen before me 

 has been in alcohol, and the pale markings are obscured; the smooth 

 flattened clypeus and face, not at all prominent between antennse, 

 and the broad, flattened, recurved last ventral segment, will readily 

 distinguish this fine species. 



Epeoliis nevadensis. — 9. — Deep opaque black; clypeus and face 

 smooth, polished, sparsely punctured; space between antennae quite promi- 

 nent; band above base of antennae, upper margin of prothorax, margins of 

 mesothorax, broad in front, tubercles, spot beneath tegulse, posterior margin 

 of scutellum, postscutellum, sublunate mark on each side of metathorax near 

 base, spot on posterior coxae, femora exteriorly, narrow posterior margin of 

 abdominal segments 1 — 4, (that on one and two abruptly and squarelj^ dilated 

 on each side, and on first segment continued inwardly and nearly meeting on 

 the disk, leaving a broad black abbreviated band on the disk) all fulvous-yel- 

 low; fifth segment shining at base, apex densely punctured and clothed with 

 short dense black pubescence, pale sericeous in certain lights; venter opaque, 

 last segment convex, narrowed gradually to apex which is obtuse; scutellum 

 faintly ernarginate behind, lateral teeth obsolete. Length .55 inch. 



Hah. — Nevada, (H. Edwards). One specimen. The thorax is 

 marked as in 7-emi(/atu!i, but the last ventral segment is acuminate 

 at tip. and the face and clypeus are polished. 



Epeolus californicus. — $•■ — Small, black, almost entirely covered 

 with a bright citron-yellow appressed scale-like pubescence; band on vertex, 

 labrum, mandibles, antennae, anterior margin of pleura, mesothorax except 

 lateral and posterior margins, and two stripes on middle, band on scutellum, 

 narrow band on first abdominal segment, broader band at base of second, 

 pointed and oblique laterally and narrow basal margin of segments 3 — 5, 

 slightly dilated on each side on three and four, and in middle on five, all 

 black; scutellum bisinuate. with short broad lateral teeth; last ventral seg- 

 ment convex and broadly rounded at tip. Length .40 inch. 



Hah. — California, (H. Edwards). A very distinct species. 



Epeolns SCelestus. — 9. — Black; patch around base of each antenna, 

 upper margin of prothorax, lateral and apical margins of mesothorax, two 

 short lines in front, posterior margin of scutellum, postscutellum, a spot 

 behind insertion of posterior wings, a spot beneath tegulse covering tubercles, 

 a spot on each side of first abdominal segment, deeply and squarely emarginate 

 within, the points nearly meeting on the middle, and narrow apical margins 

 of segments 2 — 4, that on second slightly interrupted medially, all p,5ile buff; 

 third joint of antennae reddish; mesothorax and pleura densely and conflu- 

 ently punctured; scutellum bisinuate behind, lateral teeth prominent, obtuse; 



