CHARLES ROBERTSON 143 
Lobelia spicata (4: 67).—Blooms May 20-June 30; 11 visitors 
observed, May 31—June 12; Mas, W. 
Long-tongued Bees (4, 9)—Ceratin.: Ceratina; Megachil.: 
Alcidamea simplex, Megachile brevis; Eucer.: Tetralonia dilecta. 
Lepidoptera (7)—Lycaen.: Chrysophanus; Papilion.; Pieris, 
Pontia; Hesperi.: Ancyloxypha, Limochores taumas, Pholisora 
eatullus, Polites. 
LYTHRACEAE 
Ammannia coccinea.—Blooms June 25—October 6; 12 species 
and 21 individuals taken, July 31—August 30; Mi, R. 
Long-tongued Bees (1: 1)—Ceratin.: Ceratina 9, se, 1. 
Short-tongued Bees (5:12)—Halict. (2): Chloralictus pilosus 
se, 2, sparsus 1, versatus se, 7, Oxystoglossa similis se, 1; Panurg.: 
Calliopsis andreniformis 9, 1. 
Diptera (3)—Syrph.: Mesogramma marginata 1, Syritta 1; 
Tachin.: Spallanzania 1. 
Lepidoptera (3)—Lycaen.: Everes 1; Papilion.: Eurema 1, 
Pontia 1. 
Cuphea petiolata—Blooms July 15-October 26; 3 visitors ob- 
served, July 29-September 4; Ma, R. 
Long-tongued Bees (2)—Bomb.: Bombus americanorum ¢ 9, 
ab; Eucer.: Melissodes bimaculata ¢ 9, fq. 
Short-tongued Bees (1)—Halict.: Oxystoglossa similis 9, se, n. 
Lythrum alatum (5:179).—Blooms May 27—September 5; 55 
visitors observed, June 18—August 28; Mas, R. 
Long-tongued Bees (24)—Ap.: Apis fq; Bomb.: Bombias sep- 
aratus 2 %, Bombus impatiens %, sc, fq; Ceratin.: Ceratina 9; 
Megachil.: Osmiini: Alcidamea simplex 9; Megachilini: Megachile 
brevis ¢ 9, se, ab, mendica ¢ 9, petulans ¢, Oligotropus ¢, Sayapis 
sayi ¢'; Coelioxyini: Coelioxys modesta ?, 8-dentata ¢ 2, fq; Epeol.: 
Epeolus bifasciatus ¢ 9, Triepeolus concavus 4, concolor ¢ 9; 
Eucer.: Epimelissodes atripes 2, obliqua 4, Florilegus ¢ 9, Melis- 
sodes bimaculata 4, coloradensis 4, comptoides ¢ 2, se, fq, type, 
petalostemonis 9, se, variabilis ¢, Tetralonia dilecta ¢ 9. 
Short-tongued Bees (7)—Halict.: Agapostemon radiatus ¢ 9, 
fq, viridulus ¢ 9, Chloralictus versatus ?, sc, Odontalictus 9, se, 
Oxystoglossa confusa 4, Seladonia 4; Panurg.: Calliopsis andreni- 
formis 9, se. 
Other Hymenoptera (3)—Sphec.: Priononyx atrata, Sphex 
nigricans fq, procera. 
