262 ENTOMOLOGICAL NEWS. [June, *OQ 



Genuine D. parvwn comes from Florissant, Colorado at 

 Erigeron, June 21 (S. A. Rohiver) ; Las Vegas, New Mexico, 

 June 15 (N. E. Cochran) ; and Dripping Spring, Organ Mts., 

 N. M., August (Ckll.). 



Antbidinm cons plenum Cress on. 



This fine species has hitherto been known only in the fe- 

 male. Last year I obtained two males at Boulder, Colorado, 

 July 15 (on campus of University of Colorado) and July 16. 

 The male resembles the female very much, with the exception 

 of the usual sexual differences. The following characters 

 are diagnostic : Clypeus and lateral marks pale yellow, the lat- 

 ter broadly truncate above at the level of the antennae; an- 

 tennae entirely black; yellow band on vertex reduced to a 

 large stripe on each side above eye ; hair of head and thorax 

 above very slightly ochreous ; thorax with very little yellow, 

 tubercles with yellow spot, mesothorax with a pair of small 

 yellow spots in front, scutellum with a pair of yellow marks ; 

 seventh abdominal segment yellow with a median black spine 

 and narrow brown margin, the lateral lobes pointed. This 

 is very distinct from the male of A. illustrc, and comes nearer 

 to A. serranum. The following table separates the three 

 males : 



Middle of seventh abdominal segment with a shining tubercle, but no 

 distinct spine ; clypeus with a large cuneiform black mark. 



illustre Cress. 



Middle of seventh segment with a short spine ; clypeus with a large 

 cuneiform black mark serranum Ckll. 



Middle of seventh segment with a rather long spine ; clypeus without a 

 black mark couspicuiim Cress. 



Autnidium pondreum Titus, var. a. 



$ Seventh abdominal segment entirely black. This is in all other 

 respects a normal A. pondreum; the sixth segment has a very broad, 

 bright yellow band, notched in the middle, and the tibiae are mainly 

 yellow on the outer side. It seems possible that the insect may be a 

 hybrid between A. pondreum and A. tenuiftorae Ckll. 



Hob. Campus of University of Colorado, Boulder, July 

 (W. P. Cocker ell.) I have normal pondreum from Boulder 

 and Jim Creek, Boulder County, collected by Mr. A. M. Kite. 



