214 FLOWERS AND INSECTS—XXVI 
Ceratoma, Diabrotica 12-punctata, vittata; Curculion.: Centrinites, 
Centrinus picumnus; Cerambyc.: Acmaeops nigripennis. 
Hemiptera (3)—Pentatom.: Euschistus ictericus ; Caps.: Lygus, 
Plagiognathus. 
May 10, 1910, the following 65 species and 300 individuals were 
taken as they came: 
Long-tongued Bees (4: 8)—Bomb.: Bombias separatus 1, 
Bombus americanorum 1; Ap.: Apis 5, Nomad.: Holonomada 
superba 1. 
Short-tongued Bees (22: 189)—Prosopid.: Prosopis pygmaea 5, 
ziziae 1; Collet.: Colletes aestivalis 18; Halict.: Agapostemon 
radiatus 3, Augochlora fervida 1, viridula 1, Chloralictus coreopsis 
1, pilosus 6, tegularis 1, versatus 34, Evylaeus pectoralis 1, Halictus 
lerouxii 11, parellelus 1, Odontalictus 13, Oxystoglossa confusa 5, 
similis 17, Seladonia 15; Andren.: Opandrena eressonii 13, ziziae 
27, Trachandrena claytoniae 1, crataegi 13, forbesii 1. 
Other Hymenoptera (14: 27)—Crabron.: Clytochrysus 1, Ee- 
temnius 1, Solenius 6, Xestoecrabro texanus 1; Vesp.: Polistes 
variatus 2; Humen.: Ancistrocerus tigris 2, Eumenes fraternus 1. 
Leionotus anormis 2, clypeatus 2, foraminatus 3, histrionalis 2, 
megaera 1; Tiphi.: Tiphia clypeata 1; Ichnewmon.: Exyston ab- 
dominalis 2. 
Diptera (21: 69)—Bibion.: Bibio albipennis 6; Syrph.: Eris- 
talis latifrons 1, Helophilus latifrons 2, Mesogramma marginata 4, 
Orthoneura pictipennis 3, Paragus bicolor 1, tibialis 3, Sphaero- 
phoria 4, Sphegina rufiventris 1, Syritta 1; Conop.: Zodion fulvi- 
frons 4; Tachin.: Cistogaster occidua 5, pallasi 5, Siphona 2, 
Tachina rustica 1; Sarcophag.: Helicobia helicis 1; Musc.: Lucilia 
caesar 1, sylvarum 5, Pseudopyrellia 1; Anthomy.: Hylemyia inor- 
nata 1, Phorbia acra 17. 
Lepidoptera (3: 6)—Nymphal.: Phyciodes 1; Lycaen.: Heodes 
2; Noctu.: Plusia simplex 3. 
Hemiptera (1: 1)—Pentatom.: Euschistus ictericus 1. 
URTICACEAE (anemophilous) 
Ulmus americana.—One visitor observed, March 26. 
Long-tongued Bees (1)—Ap.: Apis ¢, ab. 
Ulmus fulva.—One visitor observed, March 23, April 9. 
Long-tongued Bees (1)—Ap.: Apis ¢, ab. 
VALERIANACEAE 
Valerianella radiata— Blooms May 12—June 11; 24 species and 
104 individuals taken on eight days, May 12—June 6; Mis, W. 
