58 FLOWERS AND INSECTS—XXVI 
Long-tongued Bees (11: 32)— Ap.: Apis se, 6; Bomb.: Bombias 
auricomus <4, 1, Bombus americanorum J 9, se, 4, impatiens 9, se, 7; 
Megachil.: Megachilini: Megachile brevis 9, sc, 1, Xanthosarus 9, ¢, 
1; Coelioxyini: Coelioxys sayi ¢', 1; Nomad.: Holonomada placida 9, 
1; Eucer. (2) : Melissodes autumnalis se, 8, nivea se, 1, simillima 1. 
Short-tongued Bees (3: 3)—Halict.: Agapostemon viridulus 0, 
1, Curtisapis fuscipennis J’, 1; Collet.: Colletes compactus 9, se, 1. 
Diptera (8:13)—Syrph.: Helophilus similis 1, Mesogramma 
marginata 1, Pterallastes f, 1, Syritta 2, Syrphus arcuatus 1; 
Bombyli.: Anthrax haleyon 1, Sparnopolius 2, Systropus 3. 
Lepidoptera (2: 6)—Nymphal.: Phyciodes 3; Hesperi.: Atalo- 
pedes 3. . 
Coleoptera (2: 3)—Chrysomel.: Diabrotica 12-punctata 2; 
Lampyr.: Chauliognathus pennsylvanicus 1. 
Bidens aristosa (15: 4734).—Blooms August 6—October 2; 
133 visitors observed August 26—October 2; Mas, Y. 
Long-tongued Bees (37)—Ap.: Apis ab; Bomb.: Bombias auri- 
comus 4, scutellaris ¢ 9, separatus J %, fq, Bombus americanorum 
& 9, se, ab, impatiens ¢ ? G, se, ab, Psithyrus variabilis 9; Cera- 
tin.: Ceratina 9, se; Megachil.: Trypetini: Neotrypetes productus 
6, truncatus ¢ 9, se; Megachilini: Megachile brevis ¢ 9, se, fq, 
mendica 9, sc, petulans ¢ 9, se; Coelioxyini: Coelioxys 8-dentata 9, 
sayi ¢'; Nomad.: Holonomada vincta ¢, Nomada vicina ¢; Hpeol.: 
Epeolus autumnalis 4, bifasciatus 9, coreopsis J, type, pusillus ¢ 9, 
fq, Triepeolus conecavus 6, concolor ¢ 9, ecressonii ¢ 9, fq, 
donatus ¢' 9, lunatus 9, pectoralis 4, remigatus ¢; Eucer.: Epimelis- 
sodes atripes 9, obliqua ¢ 9, se, Melissodes agilis ¢ 9, fq, autumnalis 
3d &, se, bimaculata 9, boltoniae 9, se, ab, nivea dQ, simillima 0, 
trinodis 3 9, se, fq. 
Short-tongued Bees (22)—Halict.: Agapostemon radiatus 9, se, 
viridulus ¢ 2, se, Augochlora viridula 9, se, Chloralictus pruinosus 
do, Curtisapis coriacea 4’, Odontalictus ?, se, Oxystoglossa pura 2; 
Collet.: Colletes armatus ?, compactus ¢ 9, fq, eulophi 9, se; Du- 
foure.: Halictoides 3; Andren.: Pterandrena aliciae 9, sc, helianthi 
S, pulchella ¢ 2, se; Panurg.: Calliopsis andreniformis 9, colora- 
densis § 9, se, in cop, Perdita J 2, se, ab, in cop, Pseudopanurgus 
compositarum , labrosiformis 9, se, rudbeckiae J 9, se, ab, rugosus 
Q, se, solidaginis J. 
Other Hymenoptera (18)—Philanth.: Cerceris prominens, ful- 
vipes; Sphec.: Sceliphron, Sphex gracilis, nigricans; Bembic.: 
Bembix nubillipennis, spinolae, Bicyrtes 4-fasciata, ventralis; Nys- 
son.: Pseudoplisus divisus; Vesp.: Vespula germanica; Humen.: 
