June, '08] ENTOMOLOGICAL NEWS. 245 



as long as the abdomen ; tarsus of leg 4, one and one-half times as 

 long as the tibia; tibia almost as broad as long (Fig. 6) ; genual equal 

 to the tibia in length, but slightly broader than the same. All the legs 

 bear a few stout, curved, pectinate bristles, and the tarsi several simple 

 bristles. Unguis tridactyle, dactyles equal. 

 Length o./o mm. ; breadth 0.45 mm. 



In moss. Collected by the writer at Arcola, 111. 



EXPLANATION OF PLATE. 



Fig. i. Tumidalvus aincricana, dorsal view, X 92. 



Fig. 2. Tumidalvus ainericana, labial organs of the left side, X 202. 



Fig. 3. Tumidalvus aincricana, pseudostigma and pseudostigmatic or- 

 gan, X 202. 



Fig. 4. Tumidalvus aincricana, seta from the abdomen, X 202. 



Fig. 5. Tumidalvus aincricana, ventral view, X 95. 



Fig. 6. Tumidalvus aincricana, tibia and tarsus of leg, IV, X 202. 



Fig. 7. Tumidalvus aincricana, piece of integument from dorsum of 

 abdomen, X 210. 



Some Crabronidae from Colorado and New Mexico. 



BY S. A. ROHWER, Boulder, Colo. 



CRABRO (Protothyreopus) DILECTUS Cress. 9 Florissant, 

 Colo., July 7, 1907 (S. A. Rohwer) ; thte markings are yellow, 

 not whitish, scutellum black, post-scutellum yellow, spots on 

 third abdominal segment meeting. $ Florissant, Colo., July 

 12, 1906 (S. A. Rohwer) fls. Geranium; the markings are 

 yellow, those on the abdomen somewhat whitish. $ Beulah, 

 N. M., Aug. (Ckll.) ; does not quite agree, the spots on the 

 first abdominal segment meet, two small spots on each side of 

 posterior face, markings dark yellow. Perhaps dilectus is 

 merely a variation of bigcminus Patt. 



CRAP.RO (Protothyreopus) RUFIFEMUR Pack. 9 Cripple 

 Creek, Colo., July 31, 1906, about 9100 ft., fls. Potent ilia (S. 

 A. Rohwer) . New to Colorado. 



CRABRO (Thyreopus) VINCUS Cress. 9 Cripple Creek, Colo., 

 July 31, 1906, about 9100 ft., fls. Pentstenion (Roh.) ; 9 

 Copeland Park, Boulder Co., Colo., about 8500 ft., Sept. 6, 

 1907 (G. M. Kite) ; 9 Boulder, Colo., Sept., 1906 (G. M. 

 Kite) ; 9 Florissant, Colo., July 18, 1906 (Ckll.) ; 9 Boulder, 

 Colo., June (G. M. Hite) is 8 mm. The Cripple Creek speci- 



