Bees from New Mexico. 15 



Megachile cleomis, var. lip pice nov. 



? . — Always has two transverse white hair-marks at the 

 front of the scutellum, but lacks the two marks at the front 

 of the mesothorax, which are present in M. sidalcece ; scopa 

 yellowish white, black on apical segment ; mesothorax 

 between the punctures dull ; tegulse more or less edged with 

 ferruginous ; flagellum sometimes a little ferruginous beneath ; 

 abdomen with less black hair at the sides. 



<$ . — Usually with more black hair on the thorax, espe- 

 cially on the scutellum. 



This is the Middle Sonoran race of the species. La Cueva, 

 Organ Mts., about 5300 feet, at flowers of Lippia Wrightii, 

 Sept. 3-5, 2 <?, 2 ? (C. B.T. Townsend) ; West Fork of 

 Gila River, July 12-16, ? {Townsend); Las Oruces, ?, 

 Sept. 7 (Ckll.), and males as follows :— June 16, at flowers 

 of Aster spinosus (Ckll) ; Aug. 11 (Townsend); Sept. 4, at 

 flowers of Solidago canadensis, var. arizonica (Ckll). 



The following males have no black hair on the scutellum, 

 and offer no satisfactory differences from those of typical 

 cleomis : — Las Cruces, Aug. 24, at flowers of Solidago cana- 

 densis, var. arizonica; Mesilla, July 4 (CM. Barber); 

 Mesilla Park, April 24, at flowers of Onobrychis (Jessie 

 Casad) ; Fillmore Canon, Organ Mts., Aug. 29 (Ckll)) 

 Lone Mountain, July 7 (Ckll). 



The species is recognized in the male by the ferruginous 

 patch on the upperside of the anterior femora. 



Megachile sidalcece, Ckll., 1897. 



Described originally from the male. The subjoined records 

 are based on the female, which is very similar to that of 

 M. cleomis and is distinguished by the following combination 

 of characters : — Ventral scopa pure white, black at extreme 

 tip; a conspicuous white hair-band in the scutello-meso- 

 thoracic suture ; two white hair-marks, converging poste- 

 riorly, on mesothorax in front ; mesothorax microscopically 

 tessellate between the punctures ; borders of tegulse more or 

 less ferruginous ; pubescence of face white, of vertex often 

 mixed with black; clypeus and mandibles normal, anterior 

 edge of clypeus smooth, often with a small median tubercle ; 

 abdomen mitriform. 



Mesilla, May 13, two at flowers of Prosopis glandulosa 

 (Jessie Casad) ; June 24, one at flowers of Helianthus ciliaris 

 (Ckll) ; Mesilla Park, two at flowers of Isocoma Wrightii, 

 Sept. 11 (Ckll. & Porter); Las Cruces, Aug. 23 (Ckll) ; 



