AMERICAN HYMENOPTERA. 63 



rather thickly clothed with pale pubescence, tips of tarsi pale testaceous; ab- 

 domen oblong-ovate, shining, thinly pubescent except at apex; apical margin 

 of the segments broadly testaceous, fringed more or less with pale pubescence. 

 Length .35 inch. 



Hah. — Kausas, (Prof. F. H. Sdow). One specimen. Has much 

 the general appearance of an Halictus. 



Pannrgns IialictiiliiS. — % . — Black, subopaque, clothed with a whitish 

 pubescence, very dense on face, cheeks and sides of thorax; head not wider 

 than thorax, clypeus short, transverse, densely pubescent; antennae long sub- 

 crenulated, flagellum testaceous beneath; thorax above minutely punctured, 

 rather thickly pubescent, enclosed space at base of metathorax flattened; wings 

 as in andrenoides, but with darker nervures ; legs clothed with white pubescence ; 

 tarsi, except base, yellow; abdomen oblong, shining, thinly pubescent, more 

 densely so at sides and apex and the depressed apical margin of the segments 

 have a fringe of thin pale pubescence. Length .35 inch. 



Hob. — Colorado, (Morrison); Utah, (Putnam). Five specimens. 

 This also looks very much like an Halictus. 



Paimrgu.s fimbriatus. — 9-— Black; head and thorax clothed with 

 a rather dense pale pubescence; head not wider than the thorax; face and 

 cheeks thinly pubescent; anterior margin of clypeus transverse; antennae 

 short, entirely black; thorax above with short, slightly fulvous pubescence; 

 enclosed space at base of metathorax flattened and finely reticulated; wings 

 as in andrenoides, with the second submarginal cell more narrowed towards 

 marginal; legs clothed with pale pubescence, quite dense on tibiae and tarsi; 

 abdomen ovate, depressed, polished, apical margin of the segments depressed, 

 dull testaceous and having a fascia of white pubescence, less conspicuous on 

 basal segments; anal fimbria tinged with fulvous. Length .30 inch. 



Hab. — Colorado, (Morrison). One specimen. This may be the 

 9 of the preceding species. It has much the appearance of certain 

 species of the following genus, which however have the marginal 

 cell more or less truncate at tip. 



Calliopsis coloradensis.— 9 •— Short, robust, black: head broader 

 than the thorax, clothed with pale pubescence on vertex and cheeks, face 

 very thinly clothed, the pubescence on vertex slightly tinged with ochraceous; 

 sides of the face extending narrowly nearly to the summit of the eyes, a 

 triangular spot between antennae, clypeus except two cuneiform black marks 

 sometimes nearly confluent, and base of mandibles occasionally, pale yellow; 

 labrum sometimes brown; flagellum testaceous beneath; thorax above clothed 

 with a short dense dull ochraceous pubescence, the sides with longer whitish 

 pubescence; a narrow slightly interrupted yellow band on posterior margin 

 of prothorax; tegulae dull testaceous yellow anteriorly; wings faintly dusky, 

 marginal cell long, obliquely truncated at tip, second submarginal as long as 

 the first, much narrowed towards marginal; legs with pale pubescence, more 

 dense on tibiae and tarsi; four anterior knees pale yellowish; abdomen short 

 ovate, depressed, shining, the segments with an apical fringe of dense white 

 pubescence. Length .33 inch. 



