5S6 TRANS. ST. LOUIS ACAD. SCIENXE. 



more deeply concealed. The tube measures about 3 mm. and 

 the spur about 6 mm., so that a long tongue is necessary to drain 

 it. The spur is very slender — a character which favors butter- 

 flies, which are the most abundant visitors. Small bees can reach 

 some of the nectar. On account of the weakness of the palate, 

 flies sometimes suck up the honey, or feed upon the pollen. 



At Orlando, Fla., the following visitors were observed on 7 

 days, between Feb. 17 and March 20: 



Hymenoptera. — Apidce, (i) Apis mellifica L. ^ ; (2) Megachile bre- 

 vis Say (^ 9 i (3) Anthidium perplexum Srn. ^f ; (4) Nomada torrida 

 Sm. 9' AtidrefitdiC, (5) Agapostemon aeruginosus Sm. 9? (6) Augo- 

 chlora sumptuosa Sm. 9 i (7) ^- lucidula Sm. 9 '■> (8) Halictus pecto- 

 ralis Sm. 9 ? (9) H. capitosus Sm. 9 ; (10) H. creberrimus Sm. 9- Sco- 

 liidm, (11) Elis 4-notata F. J^9— all s. 



Lepidoptera. — B/iopalocera^ (12) Phyciodes tharos Dru. ; (13) Pyra- 

 meis huntera F. ; (14) Junonia ccEnia Hiibn. ; (15) Calephelis csenius 

 L. ; (16) Papilio philenor L. ; (17) P. ajaxL.; (iS) Callidryas eubule 

 L. (19) Terias lisa Bd.-Lec. (20) Pamphila eufala Edw. ; (21) P. Huron 

 Edw.; (22) P. brettus Bd.-Lec. ; (23) P. cernes Bd.-Lec. ; (24) Euda- 

 mus sp. Bombycidiv. (25) Utetheisa bella L. — all s. 



Diptera. — Bombyltd(X, (26) Toxophora amphitea Walk., s. Syrphi- 

 d<M, (27) Mesograpta marginata Say ; (28) Baccha clavata F. (^B. ba- 

 bista Walk.)— both f.p. 



Scrophularia nodosa L., var. Alarilandica Gray. — In the Tor- 

 rey Bulletin, viii. 133-140, Prof. Trelease has given a complete 

 account of the fertilization of Scrophiilaria with references to 

 the special literature.* 



The flower is interesting on account of its special adaptation to 

 wasps. Miiller found it visited by 12 species of insects, of which 

 6 were Vespidce and 6 bees.f I have found it visited by 14 spe- 

 cies of bees, 1 1 Vespidce and EiLmenidce^ and 8 species of other 

 families. Although more bees were observed on the flowers, the 

 proportion of wasps is remarkable. I have found as many spe- 

 cies on other plants, but never in such proportions. Indeed, I 

 have taken 15 species of Vespidce and Eumenidce on flowers of 

 Cicuta maculata^ but the total number of hymenoptera was 143. 

 Again, I took 14 species on Pastinaca i'a^/z'a, but with 113 other 



* See also T. W. Fulton, Gardener's Chronicle, Jan. 2, !SS6; and Foerste, Bot. Ga- 

 zette, xiii. 153. 



t Fertilization of Flowers, 436; and Weit. Beobachtungen, lii. 30. 



