106 FLOWERS AND INSECTS—XXVI 
CUCURBITACEAE 
Cucurbita melopepo? (cult).—One visitor observed, July 11, 
September 21; Ma, Y. 
Long-tongued Bees (1)—Eucer.: Xenoglossa &. 
Cucurbita pepo (cult).—Blooms July 3—October 4; 6 visitors 
observed, July 3-September 21; Ma, Y. 
Long-tongued Bees (6)—Ap.: Apis se, fq; Bomb.: Bombus 
americanorum ¢ 9, se, fq, impatiens 9; Eucer.: Melissodes bimacu- 
lata 9, Peponapis J Q, se, ab, oligolege, Xenoglossa ¢ 2, se, ab. 
Kchinocystis lobata.—Blooms July 26—-September 27; 21 vis- 
itors observed on August 1: Pol, W. 
Long-tongued Bees (2)—Ap.: Apis; Eucer.: Melissodes bimacu- 
lata 9. 
Short-tongued Bees (1)—ZHalict.: Chloralictus versatus 9, se. 
Other Hymenoptera (3)—Scoli.: Elis 5-cineta, Seolia bicincta; 
Larr.: Tachytes elongatus. 
Diptera (15)—Syrph.: Allograpta ab, Mesogramma geminata, 
marginata, Milesia, Syritta fq, Syrphus americanus, ribesii; Sarco- 
phag.: Sarcophaga assidua; Musc.: Lucilia caesar, sericata, Musca, 
Phormia regina, Pseudopyrellia; Anthomy.: Ophyra, Phorbia acra. 
Sicyos angulatus.—Blooms August 18-September 25; 17 vis- 
itors observed, August 21-31; Pol, Y. 
Long-tongued Bees (3)—Ap.: Apis fq; Bomb.: Bombus im- 
patiens $; Hucer.: Melissodes bimaculata 9, se. 
Other Hymenoptera (9)—Sphec.: Ammobia ichneumonea, 
Chalybion, Sceliphron; Bembic.: Sphecius; Vesp.: Polistes annu- 
laris, pallipes fq, rubiginosus, Vespula germanica, maculata. 
Diptera (5)—Syrph.: Mesogramma marginata, polita; Tachin.: 
Winthemia; Musc.: Lucilia caesar, Musca. 
DIPSACEAE 
Dipsacus sylvestris (int).—Blooms July 1—August 29; 10 vis- 
itors observed on July 3, 28; Mas, R. 
Long-tongued Bees (2)—Bomb.: Bombus americanorum 9; 
Eucer.: Melissodes bimaculata ¢. 
Short-tongued Bees (2, 2)—Halict.: Agapostemon radiatus se, 
viridulus. 
Diptera (1)—Bombyli.: Exoprosopa fasciata fq. 
Lepidoptera (5)—Nymphal.: Anosia, Vanessa huntera; Papi- 
lion.: Jasoniades, Pontia; Hesperi.: Thanaos martialis. 
