110 FLOWERS AND INSECTS—XXVI 
Diptera (5, n)—Syrph.: Helophilus latifrons f; Empid.: Empis 
distans fq, humilis, otiosa, Pachymeria ab. 
Lepidoptera (4)—Lycaen.: Everes; Papilion.: Eurymus; Hes- 
pert.: Thanaos martialis; Sphing.: Hemaris thysbe. 
GRAMINEAE (anemophilous) 
Panicum virgatum.—One visitor observed, July 30. 
Short-tongued Bees (1)—Halict.: Chloralictus versatus 9, ¢, 5. 
Poa pratensis.—One visitor observed, June 9. 
Short-tongued Bees (1)—Halict.: Chloralictus sparsus 9, ¢, 4. 
Zea mays.—One visitor observed, September 1. 
Long-tongued Bees (1)—Ap.: Apis e, 2. 
HYDROPHYLLACEAE 
Ellisia nyctelaea (6: 49-50).—Blooms April 20-June 21; the 
first 100 individuals, representing 26 species, were taken on May 
8-23; Mi, W. 
Long-tongued Bees (8:30)—Bomb.: Bombus consimilis 9, 1; 
Ceratin.: Ceratina ¢ 9, 9, Zaodontomerus 3“, 8; Megachil.: Pro- 
chelostoma ¢' 9, 5, Osmia atriventris ¢ 9, sc, 2, pumila J, 1; 
Nomad.: Gnathias cuneatus 9, 2; Hucer.: Tetralonia dilecta 0, 2. 
Short-tongued Bees (11: 55)—Halict. (9) : Chloralictus obscurus 
7, sparsus se, 4, tegularis 2, versatus 2, zephyrus 1, Evylaeus pec- 
toralis 1, 4-maculatus 10, Oxystoglossa confusa 8, Seladonia se, 7; 
Andren.: Iomelissa 9, 1, Opandrena personata ¢ Q, se, 12. 
Diptera (7: 15)—Syrph.: Mesogramma geminata f, 1, margi- 
nata f, 4, Pipiza femoralis f, 1, Rhingia 2; Bombyli.: Bombylius 
major 2, pulchellus 1; Tachin.: Siphona 4. 
Hydrophyllum appendiculatum (13:579-80).—Blooms May 
2— June 19; 46 visitors observed, May 3-June 19; Ma, R. 
Long-tongued Bees (20)—Ap.: Apis se, ab; Bomb.: Bombias 
auricomus 9, separatus 2 §, sc, ab, Bombus americanorum Q, ab, 
consimilis ?, impatiens ? %, fq, ridingsii 9 9, sc, ab, Psithyrus vari- 
abilis 9; Ceratin.: Ceratina 2; Megachil.: Trypetini: Prochelostoma 
?,se; Osmiini: Alcidamea simplex ¢', Ceratosmia ?, ab, Diceratosmia 
9, se, Hoplitis ¢ 9, se, Osmia pumila 9, sc, ab; Megachilini: Mega- 
chile brevis ¢'; Nomad.: Holonomada affabilis 2; Hucer.: Tetraio- 
nia belfragei ¢ 9, se, ab, dilecta <', fq, rosae ¢ 9, fq. 
Short-tongued Bees (10)—Halict. (2): Agapostemon radiatus 
se, Augochlora viridula, Chloralictus pilosus, versatus, Curtisapis 
coriacea sec, ab, Evylaeus pectoralis, 4-maculatus, Oxystoglossa con- 
fusa se, ab, Andren.: Andrena earlini 9, geranii ¢ 9, se, ab. 
