148 FLOWERS AND INSECTS—XXVI 
Oenothera biennis (5:272).—Blooms July 20-October 16; 10 
visitors observed, August 13—-September 2; Ma, Y. 
Birds (1)—Trochil.: Trochilus fq. 
Long-tongued Bees (6)—Ap.: Apis se, fg; Bomb.: Bombus 
americanorum ¢ Q, se, fq; Megachil.: Megachile mendica 9, ¢; 
Eucer.: Anthedon ¢ 9, se, ab, oligolege, Epimelissodes obliqua 9, 
c, Melissodes bimaculata 9, ec. 
Short-tongued Bees (2, 9, e)—Halict.: Agapostemon viridulus; 
Nomi.: Paranomia. 
Lepidoptera (1)—Sphing.: Deilephila. 
Oenothera fruticosa (5: 272-3).—Blooms May 24-June 29; 28 
visitors observed, May 28—June 25; Ma, Y. 
Long-tongued Bees (7)—Bomb.: Bombus americanorum Q, se, 
ab; Ceratin.: Ceratina ¢ 9, se, fq; Megachil.: Alcidamea simplex 
2, e, Cyphopyga J @, se, ab, Megachile brevis ¢ 2, Sayapis polli- 
caris 9; Hucer.: Tetralonia dilecta 9, se. 
Short-tongued Bees (9, ?, e¢, n)—Halict.: Agapostemon viridu- 
lus ab, Chloralictus albipennis, versatus, Evylaeus pectoralis, 
Halictus lerouxii, parallelus, Odontalictus, Oxystoglossa confusa 
fq, Seladonia. 
Diptera (6, f, n)—Syrph.: Eristalis dimidiatus, latifrons, 
Sphaerophoria, Syrphus americanus, Tropidia mamillata; Tachin.: 
Cistogaster pallasii. 
Lepidoptera (4)—Papilion.: Laertias, Pontia; Hesperi.: Limo- 
chores taumas, Polites fq. 
Coleoptera (2, f, n)—Chrysomel.:~ Diabrotica 12-punctata; 
Curculion.: Centrinus seutellum-album ab. 
ORCHIDACEAE 
Cypripedium parviflorum pubescens.—Blooms May 7-30; 2 
visitors observed, May 15, 17; Ma, Y. 
Long-tongued Bees (2, n)—Ceratin.: Ceratina 9, 1, Zaodon- 
tomerus , 1. 
Habenaria leucophaea (6: 53-4).—Blooms June 12-July 12; 1 
visitor observed, July 2; Ma (S), W. 
Lepidoptera (1)—Sphing.: Chaerocampa 1. 
Liparis liliifolia—Blooms May 17-June 20; 2 visitors observed, 
June 3; Mi, R. 
Diptera (1)—Anthomy.: Hylemyia juvenalis n. 
Hemiptera (1)—Caps.: Lopidea n. 
