42 Myron Harmon Swenk 
The type was collected July 7, 1902, at flowers of Frasera by 
Mrs. Wilmatte P. Cockerell. Externally it resembles C. lacustris 
very strongly but the genitalia are very different from those of 
that species. 
. SpecIMENS ExAMINED—New Mexico: Beulah, 1. 
Colletes intermixtus Swenk. 
1905. Colletes intermixtus Swenk, Canadian Entomologist, XXXVii, no. 
8, pp. 302-04, 2 (August, 1905) ; original description. 
9. Length 9.5 mm. Clypeus flat, shiny, medially slightly but broadly 
sulcate, its punctures coarse but widely separated and not forming distinct 
striae. Supraclypeal area shining and impunctate medially. Face closely 
punctured, clothed with short gray pubescence. Sides of vertex shining, 
subimpunctate. Antennae very short, black with the flagellum brownish 
fuscous beneath, joint 34 or 5, all the median joints but three-fourths as 
long as wide. Malar space very short, linear, about one-seventh as long 
as broad, finely striate. Cheeks shiny, finely, sparsely punctured, clothed 
with long, sparse, white pubescence. Vertex with long hairs, pale and black 
intermixed, occiput with a short and dense pale fringe. Prothoracic spine 
present, short and sharp. Mesothorax with small, round, deep punctures, 
crowded but distinct anteriorly, along sides and posteriorly well separated, 
a very few on a good-sized shining disk. Mesopleura similarly but stri- 
ately punctured. Scutellum with anterior one-third shining and impunc- 
tate, the remaining portion coarsely and sparsely punctured, and with a 
median depressed line. Postscutellum densely punctured. Superior face 
of metathorax fairly well defined, its pits shining, somewhat irregular, 
longer than broad. Enclosure perfectly funnel-shaped, shining, the bowl 
convex with a median and several lateral ridges, the neck concave and 
perfectly smooth. Surrounding area shiny, with sparse but very distinct 
punctures. Pubescence of thorax above grayish white sparingly mixed 
with black on scutellar fringe and mesothorax, below pure white. Tegulae 
blackish. Wings subhyaline, nervures dark brown, the stigma paler. Legs 
stout, black, clothed with short, dense, white pubescence, some black bris- 
tles along anterior border of intermediate and posterior tarsi. Basal joint 
of hind tarsi three times as long as broad. Tibial spurs slender, dark, 
not pectinate. Claws ferruginous, medially toothed. Anterior coxae not 
spinate. Abdomen stout, distinctly subconical, shining, segment 1 im- 
punctate or at most indistinctly and scatteringly punctured, 2 and follow- 
ing segments indistinctly but rather closely punctured, the apical margins 
perfectly smooth and impunctate under the broad, pure white fasciae on 
segments 1-5. Basal truncation with long, erect, white hairs, becoming 
shorter and sparser on the disk of segment 1 and forming a dense fringe 
down the sides, following segments with short, scattered pale pile, 4-6 
84 
