104 FLOWERS AND INSECTS—XXVI 
Dentaria laciniata—Blooms April 2-May 2; 39 visitors ob- 
served, April 2-28; Mi, W. 
Long-tongued Bees (19)—Ap.: Apis se, fg.; Bomb. (2): Bom- 
bias separatus, Bombus americanorum, impatiens, ridingsii; Cera- 
tin.: Ceratina 6; Megachil.: Centrosmia ¢' ?, Ceratosmia ¢', Osmia 
pumila ¢; Nomad.: Gnathias cuneatus 4’, ovatus ¢', Nomada cres- 
sonii J, illinoensis 3, sayi ¢' 9, fq, Phor ¢, Xanthidium dentariae 
3; faq, type, luteoloides ¢, fq, luteolum .', fq; Eucer.: Tetralonia 
belfragei ¢ 9. 
Short-tongued Bees (14)—Halict. (2): Agapostemon radiatus, 
Chloralictus pilosus, sparsus se, versatus, Evylaeus foxii, Halictus 
lerouxii sc, Odontalictus; Andren.: Andrena carlini ¢ 9, fq, pruni 
db; sayi & 9, fq, tridens ¢', Opandrena cressonii ?, miserabilis ¢ , 
Trachandrena rugosa ¢ 9. 
Diptera (3)— Syrph.: Sphaerophoria f, n; Empid.: Empis 
humilis; Bombyli.: Bombylius major. 
Lepidoptera (2)—Zycuen.: Everes; Papilion.: Iphiclides. 
Coleoptera (1)—WNitidul.: Cereus f, fq, n. 
Lepidium virginicum.—Blooms April 12-November 7; 45 vis- 
itors observed, May 17—June 9; Mi, W. 
Long-tongued Bees (2)—Ceratin.: Ceratina ¢ 9, fq, Zaodonto- 
merus 6, fq. 
Short-tongued Bees (15)—Halict. (2): Agapostemon radiatus, 
Chloralictus coreopsis, sparsus sc, tegularis sc, versatus, Evylaeus 
arcuatus, pectoralis se, ab, Odontalictus, Oxystoglossa similis se, fq, 
Seladonia; Prosopid.: Prosopis pygmaea 6 9, sayi 2, ziziae ¢ 9, 
fq; Collet.: Colletes eulophi ¢; Andren.: Opandrena personata Q, se. 
Other Hymenoptera (6)—Eumen.: Leionotus clypeatus, histrion- 
alis, illinoensis; Oxybel.: Notoglossa frontalis; Pompil.: Anoplius 
illinoensis, Psammochares tenebrosus. 
Diptera (21)—Stratiomy.: Nemotelus; Syrph.: Eristalis dimid- 
iatus, Helophilus similis, Mesogramma marginata ab, Paragus bi- 
color, tibialis, Syritta; Conop.: Zodion fulvifrons fq; Tachin.: 
Apinops, Cistogaster occidua, pallasii, Gymnosoma, Leucostoma 
atra, Ocyptera tenuis, Phorantha purpurascens; Sarcophag.: Heli- 
eobia helicis; Musc.: Lucilia caesar, Pseudopyrellia; Anthomy.: 
Limnophora, Phorbia acra ab, platura ab. 
Lepidoptera (1)—Papilion.: Pontia. 
May 20, June 1, 1909, 166 individuals belonging to 34 species 
were taken on the flowers: 
Long-tongued Bees (2: 11)—Ceratin.: Ceratina 5, Zaodonto- 
merus 6. 
