206 E. T. CRESSON, 



Anthidinm ealifornictiiii. — %. — Black, clothed with white pubes- 

 cence, sometimes tinged with ochraceous, that on vertex and thorax above 

 more or less dull yellow; sides of face, clypeus, mandibles except tips, and 

 spot behind summit of each eye yellowish-white; wings tinged with fuscous, 

 neuration as in emarginatiun ; legs clothed with white pubescence, a pale 

 yellow line on outer side of the basal joint of all the tarsi ; abdomen shaped as 

 in emarginatum, a spot on each side of first segment and sometimes two spots 

 or dots on middle, a band on segments 2 — 5, more or less broadly and deeply 

 emarginate on each side anteriorly, and interrupted medially, and two spots 

 on middle of sixth segment, all yellowish ; a stout acute spine on lateral apical 

 margin of sixth segment; apical segment prominently bilobed at tip, and with 

 a rather long, acute, incurved, central tooth. Length .50 inch. 



Hab. — California, (H. Edwards). Two specimens. Closely allied 

 to emarginatum Say. 



Specimens will doubtless occur with the pale bands on abdomen 

 divided by the emarginations into spots of very unequal size, and 

 which may all disappear except those on the extreme sides of the 

 segments, where they do not seem to diminish in size. 



Authidiiiin plaeitiim. — 9- — Black, clothed with short ochraceous 

 pubescence, that on vertex and mesothorax fuscous; head and thorax closely 

 and finely punctured ; sides of face, clypeus except a median stripe, mandibles 

 except tips, a band behind ocelli interrupted medially, lateral margin of 

 mesothorax curved anteriorly, two oblique lines on scutellum, tubercles, and 

 anterior margin of teguise, all yellow; wings dusky, neuration as in emargin- 

 atum; legs yellow, most of coxse and trochanters, femora above and within 

 and most of the tibiae within, black, tips of tarsi fuscous; abdomen short, 

 broad, convex, shining, feebly punctured, deeply transversely impressed at 

 base, each segment with a yellow band, those on two or three basal segments 

 slightly interrupted medially, that on first segment slightly notched on each 

 Bide posteriorly, those on segments 2—5 more or less deeply sinuate or sub- 

 emarginate on each side anteriorly; ventral scopa pale. Length .40 inch. 

 Hah. — Nevada, (Morrison). One specimen. 



Antliidium blanditum. — 9. — Black, clothed with pale pubescence; 

 sides of face, clypeus, mandibles except tips, band behind ocelli interrupted 

 medially, lateral margin of mesothorax curved anteriorly, two oblique lines 

 on scutellum, anterior margin of teguise, tubercles, and spot beneath, yellow; 

 wings dusky, neuration as in emarginatum; legs yellow, coxse, trochanters, 

 femora above and beneath, and tibiae within, black, tips of tarsi ferruginous; 

 abdomen convex, finely punctured, not transversely impressed at base, seg- 

 ments 1 — 5 with an even yellow band, slightly narrowed medially and inter- 

 rupted on first segment; terminal segment entirely yellow, the apical margin 

 slightly notched medially and strongly sinuate on each side; ventral scopa 

 pale. Length .40 inch. 



ILth. — Nevada, (Morrison). Two specimens. 



Anthidiuin illustre. — 9- — Black, opaque, densely and finely punc- 

 tured, clothed with short pale ochraceous pubescence, that on vertex and meso- 

 thorax pale fuscous; sides of face broadly and continued nearly to summit, a 



