186 FLOWERS AND INSECTS—XXVI 
Long-tongued Bees (7)—Bomb. (2): Bombias auricomus ab, 
scutellaris, separatus ab, Bombus americanorum ab, impatiens ab; 
Eucer.: Tetralonia dilecta J 9, ab; Anthophor.: Anthemoessa <j. 
SAXIFRAGACEAE 
Heuchera hispida (5: 178—-9).—Blooms May 4—July 4; 6 visitors 
observed, May 8—June 23; Mi, Y. 
Long-tongued Bees (1)—Bomb.: Bombus americanorum Q. 
Short-tongued Bees (5)—Halict. (2): Chloralictus pruinosus, 
versatus se, fq, Oxystoglossa confusa se, similis se, fq; Collet.: 
Colletes aestivalis ¢ 9, se, ab, oligolege. 
Hydrangea arborescens (5: 269-70).—Blooms June 21—August 
2; 34 visitors observed, June 27, 30; Mis, W. 
Long-tongued Bees (4)—-Bomb.: Bombias separatus 9, ¢, ab, 
Bombus americanorum Q, ¢; Ceratin.: Ceratina , se; Megachil.: 
Neotrypetes truncatus 9, ¢ 
Short-tongued Bees (8)—Halict.: Chloralictus sparsus 9, se, 
ab, versatus 9, sec, ab, Evylaeus arcuatus 9, se, pectoralis J 9, se, 
truncatus 9, sc, Oxystoglossa pura 9, sc, Seladonia 9, ec; Prosopid.: 
Prosopis ziziae ¢ 9, sf, ab. 
Other Hymenoptera (1)—Crabron.: Solenius. 
Diptera (14)—Syrph. (sf): Allograpta, Eristalis tenax, Meso- 
gramma geminata, Paragus tibialis, Sphaerophoria, Syritta, Syr- 
phus americanus; Hmpid.: Parempis ab; Conop.: Oncomyia fq, 
Stylogaster biannulata; Tachin.: Archytas analis; Musc.: Grapho- 
myia, Musca, Pseudopyrellia. t 
Lepidoptera (2)—Hesperi.: Epargyreus; Pyromorph.: Har- 
risina. 
Coleoptera (5)—Cerambyc.: Euderees sf, Typocerus velutinus ; 
Mordell.: Mordella marginata ab, Mordellistena ornata, pubes- 
cens ab. 
Philadelphus grandiflorus (cult, 5:270).—Twenty-one species 
and 160 individuals; May 29-June 26; Mi, W. 
Long-tongued Bees (2:67)—Bomb.: Bombus americanorum 
9, 1; Megachil.: Prochelostoma philadelphi ¢ 9, se, in cop, 66, type. 
Short-tongued Bees (8:58, 9)—Halict.: Chloralictus sparsus 
sc, 32, versatus se, 5, zephyrus 1; Prosopid.: Prosopis ziziae 2; 
Andren.: Opandrena cressonii se, 1, personata 4, Trachandrena 
claytoniae se, 9, crataegi se, 4. 
Other Hymenoptera (2:4)—Humen.: Ancistrocerus tigris 1, 
Leionotus foraminatus 3. 
