106 Trans. Acad. Sci. of St. Louis. 
acca es (47) Pieris protodice B.-L.; (48) Phyciodes 
tharos Dru., f 
Soiccmara se wishin: (49) Rhipiphorus limbatus F. 
Hemiptera — Lygeide: (50) Lygeus turcicus F. 
Pycnanthemum muticum Pers. var. pilosum Gray. —Com- 
pared with the preceding, the plant is less abundant, has 
taller stems, 5 to 13 dm., and the inflorescences are hardly as 
attractive to insects, being somewhat smaller and less flat- 
topped. The tubes are about 6 mm. deep, only about one 
mm. deeper than in P. lanceolatum, but the result is that P. 
muticum shows more bees, compared with other hymenoptera, 
and an increase in large and long-tongued diptera. The plant 
blooms from July 5 to Aug. 15. July 29-31 I observed the fol- 
lowing insects, all only sucking honey, except Nos. 17 and 18:— 
Hymenoptera — Apide: (1) Apis mellifica L. 8, ab.; (2) Bombus 
americanorum F. 8 ; (3) Ceratina dupla Say 9; (4) Megachile brevis Say 
3 (5) Epectus lunatus Say o'; (6) eed andreniformis Sm. ¢'Q, freq.; 
Andrenide: (7) Agapostemon radiatus Say g’, ab.; (8) Augochlora lucidula 
Sm. f' 2; (9) word pectoralis Sm. 93; (10) H. similis Sm. f' 9; (1D) | 
H. parailelus Say 9; (12) H. lerouxii Lep. @'9, very ab.; (18) H. ligatus 
(16) H. zephyrus Sm. 9; (17) H. confusus Sm. 99, s. & c. p., ab.; (18) 
H. stultus Cr. 9, s. & c. p., ab.; (19) Sphecodes mandibularis Cr. gj; (20) 
S. arvensis Pttn. §9; (21) mio affinis Sm. 9; Humenide: (22) 
Odynerus foraminatus Sauss., ab.; (23) O. anormis Say; (24 Sp.; 
Crabronide: (25) Crabro interruptus Lep.; (26) Anacrabro ocellatus 
Pack. ; Philanthide: (27) Eucerceris zonatus Say; Bembecide: (28) Moned- 
ula dadotina F.; Sphecide: (29) Ammophila procera Klug; (30) . vul- 
garis Cr.; (31) - intercepta Lep.; (32) A. pictipennis Walsh, freq.; (33) 
A. graci ilis Lep., freq.; (34) Sphex ichneumonea L.; Pompilide: (35) Prioc- 
nemis fulvicornis Cr.; Scoliide: (36) re sa sexcincta F., ab.; (37) M.- 
octita te Say; (38) Scolia bicincta F., 
Diptera— Bombylide: (39) ont fascipennis Say, ab.; Conopide: 
(40) Piydboephale tibialis Say; (41) Zodion falvifrons Say; (42) Oncomyia 
Lw.; Syrphide: (48) Eristalis tenax L.; (44) E. eines Wa.; 
(45) E. transversus Wd.; (46) Syritta pipiens L., ab.; Tachinide: (47) 
Hyalomyia purpurascens Twns.; (48) Trichopoda pennipes F.; any Cisto- 
gaster pallasii Twns.; (50) Jurinia smaragdina Mcq.; (51) J. apicifera ee 
ab.; (52) Acroglossa Hespertiarym Will.; (53) Siphona illinoensis Twos. 
(54) Cuphocera ruficauda v. d. W.; Sarcophagide: (55) Sarcophaga sp.i 
Muscide: (56) Stomoxys Galenivane L.; (57) Lucilia cesar L.; (68) Comp- 
somyia macellaria F. 
= epitupsets — Rhopalocera: (59) Pieris protodice B.-L.; (60) Phyciodes 
toe neaondal (61) Rhipiphorus limbatus F. 
