CHARLES ROBERTSON 103 
Diptera (27)—Syrph.: Allograpta, Eristalis dimidiatus sf, 
meigenii fq, Helophilus latifrons, similis, Mallota cimbiciformis, 
Melanostoma mellinum, Mesogramma geminata, marginata, 
Sphaerophoria, Syritta sf; Bombyli.: Aldrichia sf; Conop.: On- 
comyia, Zodion fulvifrons; Tachin,: Apinops, Gonia capitata, Gym- 
noprosopa, Peleteria, Siphona fq; Sarcophag.: Cynomyia fq, Heli- 
cobia helicis, Sarcophaga sinuata; Musc.: Lucilia caesar, sericata, 
sylvarum fq; Anthomy.: Phorbia,acra, platura. 
Lepidoptera (6)—Nymphal.: Charidryas, Phyciodes ; Papilion.: 
Pontia; Hesperi.: Pholisora catullus, Polites, Thanaos martialis. 
The first 100 individuals taken on the flowers, May 11, 13, 15, 
17, 1916, showed species and individuals as follows: 
Short-tongued Bees (12: 63)—Halict.: Chloralictus coreopsis 
1, sparsus 26, tegularis 1, versatus 2, zephyrus 1, Dialictus 1, Evy- 
laeus foxii 3, pectoralis 9, Oxystoglossa similis 2; Andren.: An- 
drena arabis 7, Opandrena cressonii 1, personata 9. 
Diptera (13: 37)—Syrph.: Eristalis meigenii 5, Mallota cimbici- 
formis 1, Mesogramma geminata 1, marginata 4, Syritta 4; 
Bombyli.: Aldrichia 1; Tachin.: Gymnoprosopa 1, Siphona 6; 
Musc.: Lucilia caesar 2, sericata 1, sylvarum 7; Anthomy.: Phor- 
bia acra 3, platura 1. 
Cardamine bulbosa (2: 298-9).—Blooms April 22—May 30; 49 
visitors observed, May 2-21; Mi, W. 
Long-tongued Bees (14)—Bomb.: Bombias auricomus 9; 
Ceratin.: Ceratina ¢ 9, se, fq, Zaodontomerus ¢{; Megachil.: Alci- 
damea simplex 4, Ceratosmia ¢' 2, Diceratosmia 9, se, Gnathosmia 
9, Osmia atriventris ¢ 9, fq, collinsiae ¢, cordata df, ab, type, 
pumila ¢ 9, se, ab; Nomad.: Holonomada superba ¢ 9, Nomada 
denticulata 4; Eucer.: Tetralonia dilecta ¢ 9. 
Short-tongued Bees (14)—Halict. (2): Chloralictus pilosus se, 
pruinosus se, fq, versatus se, fq, Evylaeus pectoralis se, fq, Odon- 
talictus, Oxystoglossa confusa, similis, Seladonia fq; Prosopid.: 
Prosopis pygmaea 4; Andren.: Andrena arabis 2, se, ab, sayi 9, 
Iomelissa 9, Opandrena miserabilis 2, personata ¢. 
Diptera (13)—Stratiomy.: Nemotelus; Syrph.: Mesogramma 
marginata, Orthoneura pictipennis, Sphaerophoria; 2mpid.: Empis 
avida, nuda, otiosa; Bombyli.: Bombylius atriceps fq, major; 
Conop.: Myopa vesiculosa, Zodion fulvifrons; Musc.: Lucilia eaesar ; 
Anthomy.: Phorbia acra. 
Lepidoptera (8)—Nymphal.: Phyciodes, Vanessa atalanta; 
Lycaen.: Everes; Papilion.: Eurymus, Pieris, Xanthidia; Hesperi.: 
Epargyreus, Pholisora catullus. 
