108 The Botanical Gazette. (March, 
freq.; (15) H. pruinosus Rob. 9,s. and c. p.; (16) H. stultus 
Cr.'9,s.; (17) Augochlora pura Say, s. ard c. p., freq.; (18) 
Agapostemon radiatus Say?,s. and c. p., freq. 
DIPTERA.—Bombylide: (19) Bombylius fratellus Wd., s.; 
Syrphide: (20) Chilosia capillata Lw., s.; (21) Melanostoma 
mellinum L.; (22) Syrphus arcuatus FIl., s.; (23) S. ameri- 
canus Wd.; (24) Mesograpta marginata Say; s. and f. p, 
freq.; (25) M. geminata Say, s., freq.; (26) Sphaerophoria 
cylindrica Say, s. and f. p.; (27) Eristalis transversus Wd., 
f. p.; (28) Xylota fraudulosa Lw.. s.; Zachinide: (29) Gonia 
frontosa Say, s., freq.; Sarcophagide: ( 30) Sarcophaga sp., 
s.; Musctde: (31) Lucilia cornicina F., s.; Anthomyide: 
(32) Chortophila sp., s., freq. 
LEPIDOPTERA. —Papilionide : (33) Colias philodice Godt.,s. 
COLEOPTERA.—Cdemerida: (34) Asclera ruficollis Say, f.p. 
RANUNCULUS ABORTIVUS L.?—-Although apparently in 
need of a chance to pollinate its stigmas with pollen from its 
own stamens, as in the cases of R. fascicularis and septentii- 
onalis, the flowers of this species do not seem to be able to 
effectually self-pollinate. 
Newly opened flowers have receptive stigmas before the 
anthers dehisce and are consequently proterogynous. S00 _ 
the outer anthers begin to dehisce extrorsely and early be 
come reflexed. At this time the central carpels are above 
elongation of the receptacle. The lower pistils, howevel 
may receive pollen directly from the surrounding anthers 
when these have dehisced. 
flowers about 5-8" wide. The petals are minute, and Dei 
nectar pits on their bases, not protected by a scale. 
the flowers are quite inconspicuous 
sr On the sth of May I noted as visitors: : 
: fe NOP TERA.—Andvenidae : (1) Andrena ziziae 
* 'Feq.; (2) Halictus stultus Cr. 9, s. and c. p.; (3 
chlora pura Say 9, s. —_ 
2 ; : “ 7 a 
Nat, Se Piney omibations to the Life-Histories of Plants, VIL., Pree d 
