114 E. T. CRESSON. 



rupted medially, all enclosing laterally a transverse black spot or line; lateral 

 apical margin of sixth segment narrowly yellowish ; apical segment yellowish- 

 ferruginous, shaped as in fig. 1. Length .36 inch. 



Hah. — Texas, (Belfrage). Two specimens. This is very much 

 like concinnum Cress., % in size and ornamentation, but may be 

 distinguished at once by the shape of the last dorsal segment of the 

 abdomen, and by the posterior coxae being destitute of the strong yel- 

 low tooth so conspicuous in concinnum. A. interruptum Say (= curva- 

 tum Sm.) % , simile Cress. % , concinnum % , and iexanum are all very 

 similar in size and ornamentation, but are easily separated by the 

 shape of the last dorsal segment of the abdomen, as given in the 

 above cut. Fig. 1 represents that of texanum ; fig. 2, concinnum, and 

 fig. 3, interruptum; in simile the shape of that segment is as repre- 

 sented by fig. 3, except that the apical margin is sinuate on each 

 side of the middle and not emarginate, the central tooth being broad 

 and rounded. All have a stout yellow tooth on posterior coxfe, 

 except texanum. 



Anthidinm parTUiu. — 9* — Small, black; anterior orbits broad on the 

 face, sometimes two spots on clypeus, line behind summit of eyes, two spots on 

 anterior margin of mesothorax, tegulse anteriorly, spot before, narrow inter- 

 rupted line on posterior margin of scutellum, knees, spot at base of tibise, a 

 spot on each side and line on middle of first segment of abdomen, a broad 

 oblong stripe on each side of segments 2 — 5, (curved downwards and pointed 

 within, the curved form being given by a deep notch in the middle of each 

 stripe beneath), and sometimes two dots on apical segment, all yellow; tubercles 

 bearing a large broad thin translucent scale, rounded laterally and subreflexed 

 anteriorly; wings subhyaline, marginal cell fuliginous, abdomen shining strongly 

 and sparsely punctured; ventral scopa yellowish. Length .27 inch. 



% . — Marked like the 9 except that the clypeus is entirely yellow, the sixth 

 segment of abdomen with a yellow spot on disk and dot on each side, and the 

 apical segment yellow and shaped much as in interruptum ; posterior coxae each 

 with a stout yellow tooth. Length .28 inch. 



JIdb. — Colorado, (Ridings). Two specimens. Marked very much 

 like simile, but smaller. 



Anthidinm palliventre. — 9- — Black; head and thorax clothed with 

 a dense pale pubescence, tinged with yellowish on vertex and thorax above, 

 and sparse on clypeus, the anterior margin of which is subconcave and uneven; 

 a pale spot behind the summit of each eye; wings smoky, tegulse with a pale 

 spot in front; four anterior tibiae with a short acute spine at their tip, basal 

 joint of tarsi with blackish pubescence beneath and at tip above of two anterior 

 pairs; abdomen short, broad, convex, shining, sparsely clothed with long pale 

 pubescence, marked as in atriventre except that the pale band on first segment 

 is interrupted into four spots; ventral scopa pale. Length .40 inch. 



Hah. — California, (H. Edwards). This is broader and more pilose 

 than atriventre and has the ventral scopa pale. 



