130 Prof. T. D. A. Cockerell on 



ville, Aug. 6 {Porter fij- Chll.) ; Las Vegas, July 19, at Helu 

 anthus, c? [L. Reed) ; July 22, at alfalfa and Helianthus 

 anmnis ( ir. Porter) ; July 20, at Aplopappus spinulosus, ^ 

 [W.Porter); July 26, at Verbesina encelioides, ? (Ckll.) ; 

 Aug. 3, at Helianthus annuus, S ? (^^« Porter). 



Melissodes gilensis, Ckll. 



Las Vegas, July 20 and 22, at Cleome serrulata, ? [W. 

 Porter); July 24, at Sidalcea neomexicana, ? (^. Porter). 



Melissodes grindelice, Ckll. 



Las Vegas Hot Springs, Aug. 10, at flowers of Senf^cio 

 Donglasii and Helianthus annuus, 6 S i^^- Porter); Las 

 Vegas, July 19, at Verbena Macdougali, ? (IT. Porter); 

 July 22, at Cleume serrulata, ? [W. Porter); July 22, at 

 Lepachys columnaris and L.tagetes, $ (TF. Por/er) ; Aug. 5, 

 at Verbesina encelioides, S [Ckll.), 



Melissodes pallidicincta, Ckll. 



The following records all relate to females: — Las Vegas, 

 June 22 and 23, also 29, at Malvastrvm dissectum (Ckll.) ; 

 July 1, 2, and 5, at Sidalcea neomexicana {M. Holzman) ; 

 July 3, at Trifulium repens {N. Stern); July 4 and 11, at 

 Cleome serrulata {N. Stern, Ckll.) ; July 6, at Verbena 

 Macdougali {Ckll., M. Winte7's) ; July 6, at Spharalcea lobata 

 ( W. Porter) ; July 10 and 24, at Asclepias verticilluta 

 [N. Stern, 11 '. Porter) ; July 24, at an umbellifer ( W. Porter) ; 

 Aug. 1, at Lycium vulgare ( W. Porter) ; Romeroville, Aug. 6 

 [Porter i^ Ckll.). 



Melissodes iristis, Ckll. 



Las Vegas, July 20, at Cleome serrulata, 1 S • This is very 

 probably the male of M. pallidicincta ; but if so, it is curious 

 that only one was caught, while the females abounded. 



Melisiodes ruidosensis, Ckll, 



Beulah, July, 1 J (TF. Porter) ; Las Vegas, Aug. 2, 1 cJ 

 {Porter ^ Ckll.) . 



Xenoglossa pruinosa (Say). 



Las Vegas, July 13 and 15, at flowers of Cucnrbita foetidis- 

 sima (M^]] inters, M. Holzman, W. H. Eis/iel) ; July 21, 

 males asleep in flowers of Cucurbita fcetidissima, at 7.45 p.m. 

 (Ckll.) ; July 22, at flowers of Asclepias speciusa, 1 ? 

 {W. Porter). 



