Bees from Neio Mexico. 9 



] 9, at flowers of Verbena, 2 J (Porter & Ckll.) ; July 7, at 

 flowers of Senecio PJouglasti, 1 ? (W. H. Rishel) ; Aug. 10, 

 at flowers of Grindelia squarrosa, 1 ? (S. L. Mize) ; San 

 lgnacio, Sept. 1, 1 ? (Porter & Ckll.) ; Beulah, July 26, 



1 ? (W. Porter) ; west fork of Gila River, July 16, <$ 

 (Townsend) ; Rio Ruidoso, about 6500 feet, July 31 and 

 Aug. 1, at flowers of Heliopsis scabra, 2 $ (Townsend). 



The female differs at once from that of pugnata by the 

 yellow abdominal bands and the large tooth or lamina on 

 each side of the anterior margin of the clypeus. 



Megachile exilis, Cress., 1872. 



The male has the first three joints of the anterior tarsi 

 flattened at the side. The female resembles the male ; the 

 ventral scopa is white, sometimes with a few black hairs at 

 the extreme tip ; in one specimen from the Rio Ruidoso the 

 scopa on the last three segments is greyish brown ; the ante- 

 rior margin of the clypeus has two little teeth in the middle 

 and a broad tooth or lamina at each side. 



West fork of Gila River, July 12 to 16, many males 

 (Townsend')', Santa Fd, at flowers of Pentstemon Torreyim. 

 a garden, crawling on the outside of the flower, July 11, 1 J 1 

 (Ckll.) ; Las Vegas Hot Springs, July 11, 1 $ ; Las Vegas, 

 July 18, at flowers of Lycium vulgare, 1 $> ( W. Porter) ; 

 Gallinas River at La Cueva, at flowers of Psoralea tenuiflora, 



2 ? (Porter & Ckll.) ; Rio Ruidoso, about 6700 feet, at 

 flowers of Vicia near pulchella, July 29, 2 $ , 6 £ 

 ( Townsend). 



This species differs from most of its genus in not being 

 addicted to the Compositse. 



Megachile occidentalism Fox, 1894. 



A narrow species, much like the last, but rather larger, and 

 both sexes with two spots of white hair on the anterior part 

 of the mesothorax. The female has the anterior margin of 

 the clypeus with a broad but shallow median excavation, in 

 the middle of which is a tooth ; the ventral scopa is white, 

 wholly black on the last segment. 



Riley's Ranch, at base of Organ Mts., Aug. 26, 1 ? 

 (Ckll.) ; Las Cruces, June 8, 1 <J (Ckll.) ; Mesilla, May 10, 

 at flowers of Prosopis glandulosa, 1 £ (Jessie Casad) ; 

 April 22, at flowers of Phacelia, 1 <$ (Ckll.). 



This is a species of the Middle and doubtless Lower 

 Sonoran, whereas M. exilis belongs to the Upper Sonoran 

 and transition zones. 



