CHARLES ROBERTSON 101 
Short-tongued Bees (24)—Halict. (2): Agapostemon radiatus 
se, viridulus se, Chloralictus pilosus, sparsus sc, tegularis fq, ver- 
satus se, fq, Evylaeus pectoralis sc, Oxystoglossa confusa se, similis ; 
Prosopid.: Prosopis crataegi ¢, eulophi ¢, pygmaea ¢, sayi 9, 
ziziae 4; Andren.: Andrena carlini ?, corni 9, type, paniculatae 9, 
se, platyparia ¢ 9, se, ab, sayi 9, sc, Opandrena cressonii 9, se, 
Trachandrena claytoniae 9, se, fq, forbesii 9, hippotes 2, rug- 
osa 9, se. 
Other Hymenoptera (13)—Sphec.: Chalybion, Sceliphron; 
Eumen.: Ancistrocerus campestris, unifasciatus, Eumenes frater- 
nus, Leionotus foraminatus, ziziae, Monobia; Crabron.: Lindenius 
errans, Solenius; Oxrybel.: Notoglossa americana; Pompil.: Cero- 
pales fulvipes; Chalcid.: Smicra torvina. 
Diptera (32)—Syrph.: Eristalis aeneus, dimidiatus, transversus, 
Mallota cimbiciformis, Orthoneura nitida, Pipiza pulchella, Syrphus 
americanus, Tropidia mamillata; Empid.: Empis distans, levicula, 
Parempis; Conop.: Oncomyia; Tachin.: Archytas analis fq, 
aterrima, Belvosia bifasciata, unifasciata, Chaetophleps, Euphoro- 
cera claripennis fq, Exorista confinis, Frontina frenchii, Para- 
didmya, Phorantha purpurascens, Spallanzania; Sarcophag.: 
Helicobia helicis, Sareophaga bullata; Musc.: Graphomyia, Lucilia 
caesar, sericata, Morellia; Anthomy.: Anthomyiella, Phorbia acra; 
Ortal.: Camptoneura. 
Lepidoptera (2)—Nymphal.: Vanessa atalanta; Papilion.: 
Iphiclides. 
Coleoptera (8)—Cerambyc.: Strangalia; Lampyr.: Podabrus 
tomentosus fq, Telephorus flavipes fq; Mordell.: Mordella margi- 
nata fq, Pentaria; Scarabae.: Euphoria fulgida, Trichius affinis in 
cop, piger fq. 
CRUCIFERAE 
Arabis dentata.—Blooms April 5-May 31; 48 species and 254 
individuals observed, April 24~May 15; Mi, W. 
Long-tongued Bees (12: 54)—Ap.: Apis se, 34; Bomb.: Bombias 
separatus 9, 2, Bombus impatiens 9, 3; Ceratin.: Ceratina d, 1, 
Zaodontomerus 4, 2; Megachil.: Osmia atriventris 9, 2, pumila ?, 1; 
Nomad.: Gnathias cuneatus ¢ 9, 2, ovatus ?, 2, xanthoparius d, 2, 
Xanthidium luteolum 9, 1; Lucer.: Tetralonia belfragei ¢ 9, 2. 
Short-tongued Bees (25: 177)—Halict. (2): Agapostemori radi- 
atus 3, Augochlora viridula 25, Chloralictus caeruleus 1, obscurus 2, 
sparsus se, 7, tegularis se, 1, versatus 11, zephyrus 9, Curtisapis 
coriacea 7, Evyleaus foxii se, 27, pectoralis se, 7, 4-maculatus 1, 
Halictus lerouxii 2, Oxystoglossa confusa 8, pura 12, similis se, 6, 
