MONARDA FISTULOSA. 



81 



number of species and individuals visiting Monarda was large, comprising 

 representatives of the three great groups. For the sake of brevity the clue 

 name alone is given in the calendars, and the species are listed here: 



Hymenoptera: 



Andrena madronitens 

 Apis mellifica 

 Bombus appositus 

 bifariua 

 edwardsi 

 hunti 

 juxtus 

 morrisoni 

 occidentalis 



Hymenoptera — continued. 

 Clisodon terminalis 

 Colletes sp. 

 Halictus lasioglossum 



puJzenua 

 Monumetha albifrons 

 Prosopis varifrons 



Diptera: 



Anthrax nigra 



Aristatus montanus 



Eristalis arbustorum 



Syrphus americanus 

 Lepidoptera: 



Argynnis atlantis 



Atrytone taxile3 



Chrysophanus sirius 



Erynnis leonardus snowi 



Gnophaela vermiculata 



In these more complicated calendars it seems desirable to use "normal" 

 for such flowers, the number then indicating the number of flowers visited 

 in each head. Visits were for nectar, unless otherwise indicated, but in the 

 case of Clisodon, p. and n. are employed to denote those for pollen or nectar 

 respectively. When the time is given in seconds or minutes, it applies to 

 all the visits that precede. 



First series. — The two records were made on August 8 in two adjacent 

 clumps of Monarda. The installation consisted of approximately the 

 same number of normal and modified heads. Crepe-paper corollas of the 

 size of those of Rubus deliciosus were fastened below Monarda heads, making 

 a composite; there were 2 each of red, yellow, blue, white, and green. The 



Calendar 1. 



8 h 45 m Clisodon upper lip off 4, normal 6. 

 8 47 Argynnis lands and inspects Chamae- 

 nerium. 



Prosopis Chamaenerium 2 



Clisodon normal 2, inspects Chamae- 

 nerium, normal, 1, 1,1, corolla 

 split 1, normal 2, corolla shortened 

 3n, inspects Chamaenerium. 



Bombus occidentalis Geranium 4, in- 

 spects crepe Geranium. 



Prosopis Chamaenerium 3. 



Argynnis Chamaenerium 1, normal 2. 



Bombus bifarius Geranium 5, inspects 

 crepe Geranium. 



Argynnis inspects most of the objects. 



Atrytone normal 8, 2, Chamaenerium 

 2, normal 3, upper lip off 1, Cham- 

 aenerium 1, normal 3, rests on 



8 48 

 8 49 



8 51 



8 53 

 8 55 



8 58 



9 00 

 9 04 



9 h 07 n 

 9 11 



9 13 

 9 14 



9 17 



9 22 

 9 26 



yellow composite, but does not 



take nectar. 

 Atrytone blue composite 1, upper lip 



off 1. 

 Argynnis corolla shortened 1, normal 



1, upper lip off 1. 

 Argynnis Geranium 2. 

 B. appositus normal 3; Atrytone blue 



composite 4, white composite 3, 



normal 5, Chamaenerium 3. 

 B. bifarius Geranium 2; Atrytone 



normal 3, lower lip off 4, rests on 



normal, normal 2. 

 Erynnis rests on yellow composite; 



Clisodon normal 3p, upper lip off 



4n. 

 Erynnis normal 2. 



Calendar 2. 



9 h 29 m Atrytone, blue composite 1, white 

 composite 1, normal 1. 



Atrytone, lower lip off 1. 



Monumetha, normal 2; Syrphus, nor- 

 mal 1. 



Clisodon, normal 4, lower lip off 2p; 

 inspects both yellow composites 

 and normal 3. 



Gnophaela, normal 4, 3; Atrytone, 

 normal 1, red composite 1. 



9 30 

 9 31 



9 34 



9 37 



9 h 44 m B. bifarius, Geranium 2; B. occi- 

 dentalis, Geranium 4, inspects 

 crepe Geranium; Clisodon, nor- 

 mal 7n, lp; B. appositus, normal 

 4, lower lip off 1. 



Clisodon, normal 2p, 2n. 



B. occidentalis, Geranium 3; Atrytone 

 normal 2, corolla shortened 3. 



Atrytone, lower lip off 3, normal 3. 



Atrytone, rests on yellow composite. 



9 50 

 9 51 



9 52 

 9 55 



