AMERICAN HYMENOPTERA. 207 



narrowband on occiput confluent with broad posterior orbits, clypeus except 

 broad median stripe, mandibles except tips, lateral margin of mesothorax 

 curved inwards anteriorly, broad posterior margin of scutellum, slightly inter- 

 rupted medially, spot on tegulse, tubercles and spot beneath, all lemon-yellow; 

 clypeus margined anteriorly; wings tinged with fuscous, a dark streak in 

 marginal cell, second submarginal as long as the first, receiving the recurrent 

 nervures at extreme base and tip; legs lemon-yellow, coxae, femora and tibiae 

 within more or less black, tips of tarsi ferruginous; abdomen convex, shining, 

 segments 1 — 5 each with a rather broad even lemon-yellow band, slightly 

 interrupted on middle, sixth segment yellow with a black spot on each side of 

 the middle, which is depressed, the apical margin deeply and obtusely emar- 

 ginate in the middle and on each side, the lateral angles acute, making the 

 margin quadridentate ; ventral scopa ochraceous. Length .50 — .60 inch. 



9 var. consonum. — ^Mandibles and femora mostly, black ; sixth dorsal seg- 

 ment of the abdomen yellow, with a rather broad median black stripe. Length 

 .50 inch. 



Hah. — Nevada, (Morrison). Three specimens. A very handsome 

 species. 



Antliidiiim conspicuiini.^9- — Black, opaque, densely punctured, 

 clothed with pale ochraceous pubescence, that on vertex and mesothorax pale 

 fuscous; sides of face, attenuated above, sides of clypeus, a narrow band on 

 occiput, interrupted medially and continued nearly half way down the pos- 

 terior orbits, anterior margin of tegulse, spot before, a smaller one beneath and 

 four spots on posterior margin of scutellum, all lemon-yellow; wings much as 

 in illustre except that the second submarginal cell receives the first recurrent 

 nervure a small distance from the base; legs black, tibiae above and base of 

 tarsi, yellow, tips of tarsi fuscous; abdomen convex, finely punctured and 

 opaque at tip of segments, shining and slightly transversely impressed at 

 base; segments 1 — 5 each with a lemon-yellow band, more or less interrupted 

 medially, that on fifth segment broadest, tliose on first and second notched 

 on each side posteriorly; sixth segment depressed on each side of middle, 

 yellow with a broad median black stripe, apical margin as in illustre; ventral 

 scopa ochraceous. Length .55 inch. 



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



Anthidiuiu isiiigulare.— 9 .^Black, opaque, densely punctured ; broad 

 anterior orbits, clypeus except central black dot, spot above, dot before 

 anterior ocellus, narrow line on occiput confluent with line on posterior orbits, 

 mandibles except tips, spot on lateral anterior margin of mesothorax, spot 

 on scale-like tubercles, large spot on sides of pleura, posterior margin of 

 scutellum, and outer margin of tegulae, all yellow; wings stained with fuligi- 

 nous, second submarginal cell receiving the first recurrent nervure near base, 

 the second recurrent passing a little beyond the tip; legs black, the knees, 

 stripe on femora beneath, their tibiae above and base of tarsi, yellow, posterior 

 coxae each with a long yellow spine; abdomen convex, shining, sparsely punc- 

 tured, extreme sides of segments 2 — 4 dilated posteriorly into a prominent 

 obtuse tooth, a large yellow spot on sides of segments 1 — 3, a spot on middle 

 of one, a bilobed spot on middle of two, and two spots nearly confluent on 

 middle of three, the fourth and fifth segments each with a broad apical yellow 

 band, indented on the middle anteriorly and enclosing on each side a black 



