130 Prof. ‘I’. D. A. Cockerell on 
ville, Aug. 6 (Porter & Chil.); Las Vegas, July 19, at Heli- 
anthus, 8 (L. Reed); July 22, at alfalfa and Helanthus 
annuus (W. Porter) ; July 20, at Aplopappus spinulosus, g 
(W. Porter); July 26, at Verbesina encelioides, 2? (Ckil.) ; 
Aug. 3, at Helianthus annuus, 8 2 (W. Porter). 
Melissodes gilensis, Ckll. 
Las Vegas, July 20 and 22, at Cleome serrulata, 2 (W. 
Porter); July 24, at Sidalcea neomexicana, 2 (W. Porter), 
Melissodes grindelie, Ckll. 
Las Vegas Hot Springs, Aug. 10, at flowers of Senecio 
Douglasii and Hehanthus annuus, 6 g (W. Porter); Las 
Vegas, July 19, at Verbena Macdougali, 9 (W. Porter) ; 
July 22, at Cleome serrulata, 9 (W. Porter); July 22, at 
Lepachys columnaris aud L. tagetes, 9 (W. Porter); Aug. 5, 
at Verdesina encelioides, 3 (Ckil.). 
Melissodes pallidicincta, Ckll. 
The following records all relate to females :—Las Vegas, 
June 22 and 23, also 29, at Malvastrum dissectum (Ckll.) ; 
July 1, 2, and 5, at Srdulcea neomexicana (M. Holzman) ; 
July 3, at Trifolium repens (N. Stern); July 4 and 11, at 
Cleome serrulata (N. Stern, Ckll.); July 6, at Verbena 
Macdougali (Chil., M. Winters) ; July 6, at Spheralcea lobata 
(W. Porter); July 10 and 24, at <Asclepias verticillata 
(N. Stern, W. Porter); July 24, at an umbellifer (W. Porter) ; 
Aug. 1, at Lycium vulgare (W. Porter); Romeroville, Aug. 6 
(Porter & Ckli.). 
Melissodes tristis, Ckll. 
Las Vegas, July 20, at Cleome serrulata, 1 g. This is very 
probably the male of M. pallidicincta; but if so, it is curious 
that only one was caught, while the females abounded. 
Melissodes ruidosensis, Ckll. 
Beulah, July, 1 ¢ (W. Porter) ; Las Vegas, Aug. 2,1 ¢ 
(Porter & Ckil.). 
Xenoglossa pruinosa (Say). 
Las Vegas, July 13 and 15, at flowers of Cucurbita fotidis- 
sima (M. Winters, M. Holzman, W. H. Rishel); July 21, 
males asleep in flowers of Cucurbita fectidissima, at 7.45 P.M. 
(Ckil.) ; July 22, at flowers of <Asclepias speciosa, 1 9 
(W. Porter). 
