394 THE CANADIAN ENTOMOLOGIST. 



Collet us lippiariim, n. sp. 

 9. — Length about 11 )- 2 mm., anterior wing 7 ; black, shining, the 

 first two abdominal segments with a strong glaucous-blue tint; pubescence 

 white and black, nowhere at all yellowish except on legs, and here only 

 conspicuously so on inner side of anterior tibiae and tarsi ; head broad, its 

 copious hair white except some black on the vertex ; facial foveie narrow 

 at apex, but rapidly broadening below ; supraclypeal area not punctured, 

 but very finely, longitudinally striate ; clypeus prominent, very shiny, 

 depressed in the middle, irregularly and coarsely, but not densely, striate- 

 punctate ; malar space short, more than twice as broad as long ; labrum 

 with a deep central groove and weaker lateral ones ; mandibles with the 

 apical half ferruginous, inner tooth strong ; antennae black, the flagellum 

 after the first two joints dark reddish-brown below ; middle joints of 

 flagellum broader than long ; prothoracic spines rather short but evident ; 

 hair of thorax rather dull white, black on scutellum and mixed with black 

 on mesothorax, but dense and white in scutello-mesothoracic suture ; 

 mesothorax with strong, rather dense punctures ; scutellum with large, 

 well-separated punctures ; base of metathorax with the usual plicate area, 

 the plicae numerous and close together, making the pits numerous and 

 narrow, legs ordinary, the middle and hind basitarsi rather broad and flat; 

 hind spur minutely ciliate ; tegulne dark, distinctly reddish ; wings 

 hyaline, stigma dark reddish, nervures dark sepia ; second submarginal 

 cell very broad, receiving the first recurrent nervure in the middle ; 

 abdomen very shiny, with rather narrow, but dense and very conspicuous 

 pure white hair-bands on apices of first four segments ; no trace of a band 

 on base of second ; first segment with very minute punctures, extremely 

 sparse in middle, but rather close at sides ; second segment with very fine 

 punctures all over ; ventral segments only moderately fringed. 



Hab. — La Cueva, Organ Mts., New Mexico, prox. 5,300 feet, at 

 flowers of Lipp ia Wright ii, Sept. 5 (C. H. T. Townsend). Related to 

 C. Texanus and C. scopiventer, but readily known by the total absence of 

 a band at base of second abdominal segment, and other characters. C 

 Texanus and scopiventer are spring-flying species. 



Megachile megagyna, n. sp. 

 ?. — Length, 16 mm. or a little over, black, with the general form 

 and appearance of M. generosa, Cresson, but very much larger, with con- 

 spicuous white hair in the scutello-mesothoracic suture, and yellowish-white 



