CHARLES ROBERTSON 163 
Lepidoptera (3)—Hespert.: Thanaos brizo, juvenalis, Thorybes 
bathyllus. 
Coleoptera (7)—Anthic.: Corphyra terminalis sf; Carab.: 
Lebia n; Chrysomel.: Diabrotica vittata f, n; Coccinell.: Megilla 
f, n; Curculion. (n): Centrinus perscillus f, Idiostethus subcalvus; 
Oedemer.: Asclera ruficollis f, n. 
Thalictrum dasycarpum (anemophilous).—One visitor ob- 
served, June 3. 
Long-tongued Bees (1)—Ap.: Apis ¢, fq. 
RHAMNACEAE 
Ceanothus americanus (2: 303-4).—Blooms May 27-—July 2; 
121 visitors observed, June 16—July 4; Pol, W. 
Long-tongued Bees (6)—Bomb.: Bombias auricomus 9, ¢, sep- 
aratus 2 9%, sc; Ceratin.: Ceratina ¢; Megachil.: Neotrypetes trun- 
catus ¢ 9, sc; Megachile brevis 9, se; Nomad.: Centrias ameri- 
canus 9. 
Short-tongued Bees (18)—Halict.: Chloralictus sparsus 2, se 
versatus ¢ 9, sc, Curtisapis forbesii 4, Evylaeus arcuatus 9, se 
type, pectoralis 9, sc, truncatus 9, se, Oxystoglossa confusa 9, se 
Seladonia 9, sc; Sphecodini: Sphecodes minor 9, Sphecodium 
cressonii ¢ 2; Prosopid.: Prosopis pygmaea ¢ Q, ziziae ¢ 9; Collet.: 
Colletes eulophi ¢ 9, willistonii 2; Andren.: Andrena platyparia 9, 
Trachandrena crataegi 9, se; Macropid.: Macropis ¢ 2, fq; Fare? 
Calliopsis andreniformis ¢. 
Other Hymenoptera (35)—Sphec.: Isodontia apicalis, Sceli- 
phron, Sphex nigricans; Scoli.: Elis 5-cincta; Philanth.: Cerceris 
clypeata, compacta, compar, finitima, robertsonii, rufinoda; Vesp.: 
Polistes variatus ; Humen.: Ancistrocerus tigris, Eumenes fraternus, 
Leionotus dorsalis, foraminatus, fulvipes, fundatus, illinoensis, 
ziziae ; Crabron.: Solenius ; Oxybel.: Notoglossa americana, frontalis, 
Oxybelus packardii, 4-notatus; Larr.: Tachysphex acutus, belfragei ; 
Pompil.: Anoplius illinoensis, Ceropales robinsonii, Poecilopompilus 
navus, Pompiloides marginatus, Psammochares relativus, tenebro- 
sus; Chrysid.: Hedychrum violaceum; Chalcid.: Leucospis; Ten- 
thredin.: Hylotoma humeralis. 
Diptera (42)—Mycetophil.: Sciara atrata; Stratiomy.: Nemo- 
telus; Syrph.: Allograpta, Mesogramma geminata, marginata, 
Orthoneura nitida, Paragus bicolor, Sphaerophoria, Syritta, Syr- 
phus americanus, Tropidia mamillata, quadrata; Empid.: Par- 
empis; Bombyli.: Anthrax sinuosa; Conop.: Conops brachyr- 
rhynchus, Oncomyia, Stylogaster biannulata, Zodion fulvifrons; 
