172 Psyche [August 



pollen is drawn from the narrow tubes by inserting the front 

 tarsi M'ith their curled spines. 



cf s (3): Verhenacece: Verbena hastata, V. stricta, V. 

 urtieifolia. 



cf ? in copula (4): Verbena stricta, July 11, 21; V. ur- 

 tieifolia, July 15, 17. 



ZAPERDITA MAURA (2).— 9 c (1): Solanacea;: Phy- 

 salis lanceolata. 



9 s (1) : Solanacece: Physalis virginiana. 



cf s (2) : Solanacece: Physalis lanceolata, P. virginiana. 



PAIRING HABITS.— Both sexes of all of the species 

 were found. Thirty pairs belonging to eight species were taken 

 in copula. The differences are remarkable. Of eight species 

 no pairs were seen together, while of Calliopsis coloradensis, 

 which flies only 36 days and visits only five flowers, seven pairs 

 were taken together, forming a majority of the specimens. 



VISITS TO FLOWER CLASSES.— The table shows 144 

 visits to 85 flowers. Mas shows 37.6 per cent, of the flowers visit- 

 ed and 45.1 per cent, of the visits. Red shows 35.2 per cent, of 

 the flowers visited, while yellow shows 49.3 per cent, of the visits. 

 Calliopsis andreniformis, with 35.4 per cent, of the total visits, 

 shows 29.4 to Mas and 43.1 to red. Separating this species the 

 remaining 15 show for Mas 51.1 per cent, of the flowers and 53.7 

 per cent, of the visits, and for yellow 53.3 per cent, of the flowers 

 and 67.7 per cent, of the visits. Seven species, C. coloraderisis- 

 P. solidaginis, show 78.4 per cent, of their visits to Mas and 90.1 

 to yellow. The last five show 63.8 per cent, under Mis and 44.4 

 under white. As a rule the visits of the males do not differ much 

 from those of the females, but in Calliopsis andreniformis the 

 male shows 5.8 less in percentage of visits to Mas, 11.0 less red 

 and 14.9 more to white. 



