58 HENRY SKINNER, EDITOR. 



pressed white hairs, with a yellow mark extending across the anterior margin. 

 Pubescence on cheeks, pleurae and femora long and fine, whitish. Apex of tibiae, 

 the tarsi entirely, ochreous to yellow, apical tarsal joint and claws brownish. The 

 sculpture finer, closer more rugulose. 



Types. — Coll. Acad. Nat. Sciences, Phila. Type locality, Beulah, 

 N. M., (H. Skinner). One 9 , ten $ $ . Appears to be related to 

 H. nelumbonus Robt., the 9 is more slender and especially dis- 

 tinguished by the difference in disc of metathorax. Two 9 9 , 6.5 

 mm. and 7 mm., and one % , June 29, 1902, on flowers of Roripa 

 nasturtium, June 29, 1902 (Viereck). 



COLLETID^E. 

 Colletes simulaiis Cress. 



August 18 (T. D. A. Cockerell). August 18, 1900 (W. P. and 

 T. D. A. Cockerell). Three % I . August 17, 1899 (Martin Cock- 

 erell), one £ . 



C'olletes skimieri n. sp. Prothoracic spines short, labrum with a pro- 

 nounced median, longitudinal, elevation, 



9 Length 11.5 mm.— Labrum with smaller, lateral, elevated lines. Clypeus 

 robust, margin entire, slightly incurved. Surface coarsely sculptured with large 

 punctures and longitudinal stria?. Front closely, coarsely punctured. Antenna?, 

 with first joint of the flagellum longer than the second. Pubescence on cheeks 

 white, on face, grayish white, hairs on occiput with dark tips. Dorsulum coarsely 

 punctured, closely anteriorly, more separated posteriorly, pleurae also coarsely 

 punctured. Pubescence on the ventral aspect of thorax, concolorous with that on 

 cheeks, pubescence on the dorsulum sparse, partly the color of that on face, partly 

 black. Scutellum coarsely punctured with a fringe of black hairs posteriorly. A 

 fringe from insertion of wings, post-scutellum and sides of metathorax with long 

 pale hairs. Metathorax abruptly truncate the narrow dorsal exposure shining, 

 with large rugae. Enclosure of posterior face of metathorax infuudibuliform. the 

 upper half transversely rugose, with a median longitudinal imperfect line, below 

 smooth and polished, entering an almost smooth area at base of metathorax. sides 

 of metathorax amd space around enclosure coriaceous. Anterior coxae simple, 

 claws with one prominent tooth, legs with white pubescence, tibiae and tarsi 

 fringed with pale golden pubescence. Wings hyaline, nervures dark brown, 

 marginal cell appendiculate, second submarginal cell trapezoidal larger than the 

 third, transverse median nervure elbowed outwardly. First recurrent nervure 

 received by the second cubital cell a little before the middle, second recurrent 

 nervure received by the third cubital cell beyond the middle. Abdomen polished, 

 first segment distinctly punctured, with a smooth median longitudinal line, to 

 each side of which the punctures are sparse, becoming closer on the sides, on the 

 succeding segments the punctures become less defined. Fasciae white, interrupted 

 on first segment, entire on 2, 3 and 4, only a fringe on 5. Pygidium roughened, 

 covered with black appressed pubescence. 



Black. Claws, apical tarsal joints and tibial spurs more or less fuscous, 



