146 BULLETIN OF WISCONSIN NATURAL HISTORY SOCIETY. VOL. 1. NO. 3. 
IVied.; (52) Helophilus similis, Macq.; (53) Mallofa ciuibicifor- 
mis, Fall; (54) M. posticata, P.; (55) Tropidia qiiadrata, Say.; 
(56) Syritta pipieiis, L.; Stratiomyidae : (57) Stratiomyia 
norma, IVicd.; Tachinidae : (58) Hyaloinyodes triangulifera, 
Loew.; (59) Ocyptera cavolinae, Desv.; (60) Peleteria rohusta, 
Wied.; (61) P. tesseUata, F.; Muscidae: (62) Stomoxys cal- 
citrans, L.; (63) CallipJiora erythrocephala, Mg.; (64) Phonnia 
regina, Mg.; (65) Lucilia caesar, L.; (66) L. cornicina, P.; (67) 
Graphomyia americana, Desv.; (68) Morellia niicans, Mg.; Sar- 
cophagidae: (69) Sarcophaga sarraceniae, Riley; (70) Sarco- 
phaga sp. — all s. or f. p. 
C. Lepidoptera. 
Rhopalocera: (71) Basilarchia disippus, Gdt.; (72) B. asty- 
anax, P.; (73) Pyraineis atalanta, L.; (74) P. huntera. P.; (75) 
Argynnis cyhele, P.; (76) Phyciodes tharos, Driiry; (77) ^»<9- 
sia plexippus, L.; (78) Libythea bacJinianni, Kirtl.; (79) CJiry- 
sophanus thoe, Boisd. — Lee; (80) Lycaena pseudargioliis, Boisd. 
— Lee; (81) Colias philodice, Gdt.; (82) Limochores manata- 
aqua, Scud.; (83) L. taiimas, P.; Heterocera : (84) Hemaris 
difRnis, Bdv.; (85) Pliisia simplex, Gn. — all s. 
D. Coleoptera. 
Scarabaeidae : (86) Trichius piger, P. s. 
The results obtained from a comparison of this list with that 
of 5. racemosus, are in accordance with what might be expected 
on account of the difference in structure of the two flowers. The 
percentage of true wasps (Vespidae and Eumenidae) is the same 
on both species, amounting to ten per cent. The bellshaped flow- 
ers of vS. racemosus, with their more concealed nectar are more 
attractive to bees (48 per cent.) than the funnelshaped flowers 
of 5^. occidentalism with their shorter corolla tube (22 per cent, of 
bees). The latter show a decided increase in the visits of less- 
specialized insects, notably entomophilous and fossorial wasps 
and flies. Instead of i entomxophilous wasp or hardly 2 per cent, 
in S. racemosus, we have 13, or 15 per cent, of the visitors belong- 
ing to the entomophilous and fossorial wasps in 5'. occidentalis ; 
the increase in the visits of flies is from 24 per cent, in 5. race- 
mosus to 34 per cent, in S. occidentalis. Both species of Sym- 
phoricarpos receive the attention of Lepidoptera, but 5. occiden- 
talis seems to be the more attractive of the two to this order of 
insects. Trcihius piger, the only beetle frequenting both species 
is a regular visitor, which succeeds in forcing its head into the 
flowers in search of honey. 
For the sake of comparison, I add the following table; it 
refers to observations made in this country, as well as in Europe 
on the fertilization of the species of Symphoricarpos. 
