42 FLOWERS AND INSECTS—XXVI 
Tachytes aurulentus 1; Pompil.: Episyron 1, Lophopompilus phila- 
delphicus 4. 
Diptera (24: 141)—Stratiomy.: Nemotelus 1; Syrph.: Eristalis 
tenax 1, transversus 1, Helophilus laetus 1, Mesogramma geminata 
15, marginata 3, Milesia 1, Orthoneura nitida 20, Pipiza nigribarba 
1, Spilomyia longicornis 1, Syritta 10, Tropidia albistylum 1, quad- 
rata 2; Empid.: Parempis 54; Conop.: Oneomyia 1; Tachin.: 
Archytas analis 6, Cyphocera 1, Siphona 1, Spallanzania 1, Tricho- 
poda pennipes 4, Trichophora 2; Musc.: Compsomyia 4, Lucilia 
caesar 4, Pseudopyrellia 5. 
Coleoptera (2:5)—Mordell.: Mordella marginata 4, Mordelli- 
stena pubescens 1. 
Triosteum perfoliatum (4:65)—Blooms May 3-June 17, 7 
visitors observed, May 18, 23, June 3; Ma, R. 
Long-tongued Bees (5)—Bomb. (°): Bombus americanorui, 
consimilis ab, ridingsii; Anthophor.: Anthemoessa ¢; Ceratin.: 
Ceratina 9, n. | 
Short-tongued Bees (2, 9, n)—Halict.: Halictus lerouxii e¢, 
Oxystoglossa confusa se. 
Viburnum prunifolium (10: 237-8).—Blooms April 9—May 16; 
83 visitors observed, April 24, May 8; Mis, W. 
Long-tongued Bees (11)—Ap.: Apis se; Ceratin.: Ceratina J; 
Megachil.: Ceratosmia 9, Osmia pumila 9; Nomad.: Gnathias 
cuneatus 3“, ovatus ¢, Heminomada <1, Nomada eressonii 3, faq, 
illinoensis ', sayi 9, fq; Hucer.: Tetralonia dilecta J 9. 
Short-tongued Bees (27)—Halict. (2): Agapostemon radiatus, 
Chloralictus cressonii, pilosus sec, sparsus se, ab, tegularis se, ver- 
satus se, ab, Evylaeus foxii sc, pectoralis sc, ab, Halictus lerouxii 
se, Oxystoglossa confusa se, fq; Sphecodini: Machaeris stygia, 
Proteraner, Sphecodes arvensis fq, Sphecodium eressonii; Collet.: 
Colletes inaequalis ¢; Andren.: Andrena ecarlini ?, dunningii 9, 
erythrogastra J, pruni ¢ 9, se, fq, in eop, sayi ¢ 9, se, fq, Opan- 
drena eressonii 3 2, se, fq, miserabilis J 9 se, ab, personata ¢ 9, 
ab, Trachandrena claytoniae 9, se, forbesii 9, sc, hippotes Q, se, 
rugosa ¢. 
Other Hymenoptera (2)—Vesp.: Polistes pallipes; Humen.: 
Ancistrocerus tigris. 
Diptera (36)—Stratiomy.: Stratiomyia quaternaria fq; Syrph.: 
Brachyopa, Chilosia capillata fq, petulea, punctulata, Chrysogaster 
ontario, Criorhina decora, umbratilis, Eristalis aeneus fq, dimidia- 
tus, transversus, Helophilus latifrons, Mesogramma geminata, mar- 
ginata, Myiolepta strigilata fq, Orthoneura pictipennis, Paragus 
