28 Myron Harmon Swenk 
-Waldoboro, 3; Maryland: College Park, 1; Nebraska: Lincoln, 
2; West Point, 3; New Hampshire: Pelham, 2; New Jersey: 
Chester, 3; Clementon, 3; Ohio: Columbus, 3; Pennsylvania: 
Fern Rock, 4; Germantown, 9; Ogontz, 1; Virginia: Falls 
Chtirch, <1; 
Colletes compactus hesperius Swenk. 
1906. Colletes hesperius Swenk, Entomological News, xvii, p. 257, 2 & 
(September, 1906) ; original description. 
9. Like C. compactus 9, but much larger, 14 mm. long; the pubescence 
much paler and rather more abundant, the hairs of face, vertex and occiput 
all pale, the pubescence of thoracic dorsum pale dull gray with the black 
hairs comparatively few, sparse on the disk and forming a rather thin 
scutellar fringe; first abdominal segment uniformly very finely, closely 
and weakly punctured, very different from the heavy, close, double-sized 
puncturation of typical compactus, segment 2 minutely and _ indistinctly 
punctured; abdominal fasciae much broader. 
3. Like C. compactus @, but larger, 11 mm. long; pubescence entirely 
grayish white except for a very few pale brownish hairs on scutellum; 
fasciae much broader. Genitalia similar in all essential respects. 
Type Locarity.—Almota, Whitman county, Washington; 
types in collection of the author. 
This form is different enough externally from eastern com- 
pactus to suggest specific distinctness, but the armatures and 
seventh ventral plates are so similar that I do not feel warranted 
in continuing to consider them as two species. In addition to the 
type pair I have examined a female from Oregon, the exact local- 
ty, however, not being known. 
SPECIMENS EXAMINED—Oregon, 1; Washington: Almota, 2. 
Colletes inaequalis Say. 
1837. Colletes inaequalis Say, Boston Journal of Natural History, i 
4, pp. 391-92, 2 d (May, 183%); in LeConte’s Writings .of 
Thomas Say, ii, pp. 770-71 (1859); original description. 
1868. Colletes propinqua Cresson, Proceedings of the Boston Society of 
Natural History, xii, pp. 165-66, 2 ¢ (December 2, 1868) ; orig- 
i inal description. 
1868. Colletes canadensis Cresson, Ibid., pp. 166-67, ¢; original descrip- 
tion. 
1879. Colletes inaequalis Patton, [bid., xx, pp. 142-43, 2 ¢ (April, 1879) ; 
synonmy, redescription. 
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