CHARLES ROBERTSON 63 
od %, impatiens ¥, Psithyrus variabilis 2; Ceratin.: Ceratina 9, se; 
Megachil.: Osmiini: Ashmeadiella 2, se; Megachilini: Megachile 
brevis 9, petulans 9, se, Sayapis sayi ¢; Epeol.: Triepeolus con- 
eavus 9; Eucer.: Epimelissodes obliqua ¢ °, se, fq, Melissodes bi- 
maculata ¢ 9, enici 9. 
Short-tongued Bees (7)—Halict.: Agapostemon viridulus ¢ 9, 
se, Chloralictus pilosus 9, se, sparsus 9, se, versatus 2, Evylaeus 
pectoralis 2, se, Odontalictus 9, se, fq; Panurg.: Pseudopanurgus 
albitarsis 9, se. 
Other Hymenoptera (3)—Sphec.: Sphex nigricans, procera; 
Larr.: Tachytes aurulentus. 
Diptera (9)— Syrph.: Volucella vesiculosa ; Empid.: Parempis; 
Bombyli.: Anthrax haleyon, parvicornis, Exoprosopa decora, fas- 
ciata, Geron rufipes, Systoechus; Conop.: Zodion obliquefaseciatum. 
Lepidoptera (13)—Nymphal.: Anosia, Argynnis, Charidryas, 
Euptoieta, Vanessa ecardui, huntera; Papilion.: Euphoeades, Eury- 
mus, Jasoniades, Pieris, Pontia; Hesperi.: Hesperia, Thorybes 
bathyllus. 
Cacalia atriplicifolia—Blooms July 28-September 20; 10 visi- 
tors observed, August 4; Mis, W. 
Short-tongued Bees (2, 2, ¢)—Halict.: Chloralictus sparsus, 
Odontalictus. 
Other Hymenoptera (7)—Crabron.: Solenius; Orybel.: Noto- 
glossa americana, Oxybelus 4-notatus; Philanth.: Philanthus pune- 
tatus ; Sphec.: Sphex vulgaris; Eumen.: Eumenes fraternus ; Scoli.: 
Scolia bicincta. 
Diptera (1)—Empid.: Parempis ab. 
Cacalia reniformis.—Blooms June 25—July 31; 39 visitors ob- 
served, June 25—July 16; Mis, W. 
Long-tongued Bees (5)—Ap.: Apis; Ceratin.: Ceratina 92, se, 
Zaodontomerus ¢'; Megachil.: Neotrypetes truncatus 2, se; Eucer.: 
Melissodes bimaculata 9°. 
Short-tongued Bees (11)—Halict.: Agapostemon radiatus d, 
Augochlora viridula ¢ 2, fq, Chloralietus eressonii ¢, sparsus 9, 
versatus 9, se, fq, zephyrus 2, Evylaeus foxii ¢, pectoralis ¢ 9, 
Oxystoglossa pura 9°, fq; Prosopid.: Prosopis pygmaea ¢, sayi ¢- 
Other Hymenoptera (11)—Sphec.: Sphex gracilis, nigricans, 
vulgaris; Eumen.: Ancistrocerus tigris, fq, Eumenes fraternus, 
Leionotus dorsalis, fundatus fq, perennis, 4-sectus, ziziae; Crabron.: 
Solenius. 
Diptera (9)—Tipul.: Geranomyia; Syrph.: Sphaerophoria, 
