1892. ] Flowers and Insects. 175 
osia capillata Lw.; (35) Melanostoma obscurum Say; (36) 
Syrphus ribesii L.; (37) S. americanus Wd.; (38) Mesograpta 
philus similis Mcq.; (43) Xylota fraudulosa Lw.—all s. & f. 
p.; Lachinidae: (44) Gonia frontosa Say, s.; Muscidae: (45) 
Lucilia cornicina F., s. 
Coleoptera — Coccinellidae: (46) Megilla maculata DeG., 
f. p., one; Chrysomelidae : (47) Diabrotica vittata F., f. p., 
one; (Edemeridae: (48) Asclera ruficollis Say, f. p.; Anthi- 
cidae: (49) Corphyra terminalis Day; tcp: 
Hemiptera—Capsidae: (50) Lygus pratensis L., s., one. 
SANGUINARIA CANADENSIS L.— This is a common plant of 
wide distribution. In my neighborhood, however, it is rather 
Tare; at any rate, I know of but a few stations for it. 
Each plant bears a single scape rising about one decimeter 
and Supporting an 8 to 12-petaled, white flower, which ex- 
Pands about 4 or 5 cm. The plants are sometimes collected 
in little clusters, so that the flowers are made quite conspicu- 
ous and must attract insects from a distance. In the morning 
the petals are expanded horizontally, but in the afternoon 
they become more erect, preparatory to closing. 
The flowers are female in the first stage. On the first day 
at pening, the large, two-lobed stigma is receptive, while 
the anthers are still closed. By the time the anthers are be- 
ae to discharge, the stigma has turned brown, its papil- 
a€ appearing shriveled. 
and Bo 
the base of th 
