2, THE FLORIDA ENTOMOLOGIST 
compared are essential. While many of the native species are 
important pests some of the worst enemies to agriculture are 
probably introductions. A prompt recognition of new arrivals 
may serve a very useful purpose in preventing or reducing their 
destructive increase or distribution. 
Note. Collections made by the writer during the winter of 1921 at St. 
Petersburg, Tampa, Key West, Homestead, Miami, Delray, West Palm 
Beach, Canal Point, LaBelle, Ft. Myers, Manatee, Ruskin and Gainesville 
have extended the known range of a number of the species as well as adding 
a number not hitherto recognized in the state. The latter are marked with 
an asterisk—*. 
SUB ORDER HOMOPTERA 
CICADIDAE 
Tibicen biconica Walk. Key West, June (Acad. Nat. Sci. Phil.) ; 
Key West (Uhler) ; “Florida” (Macgillivray). 
Tibicen bicosta Walk. La Grange, Sept. (Davis); “Southern 
Florida” (Uhler); “Florida” (Macgillivray). Common in 
the state but restricted to the South. 
Tibicen linnei (S. & G.) Gainesville (?) (C. J. D.) 
Tibicen pruinosa Say (S. & G.) Gainesville (C. J. D.) 
Tibicen davisi (Sm. and Gr.) Miami, Georgiana (U. S. N. M.); 
Miami, Jan. (Davis) ; Miami, Sept. (Acad. Nat. Sci. Phil.). 
Tibicen erratica (Osb.) Pablo Beach, Sept., Big Pine Key, Sept. 
(Davis). Oviposits in cotton stems. 
Tibicen grossa (Fab.) Ormond (Mrs. Slosson). 
Tibicen lyricen (de Geer) Lake City (U. S. N. M.); “Florida” 
(Sm. and Gr.). 
Tibicen reperta (Uhl.) “Florida” (Uhler). 
Tibicen sayi (Sm. and Gr.) LaBelle, Apr. (Davis) ; ‘Florida’ 
(U38S;.-N.. M:):. 
Tibicen sayi var. australis (Davis). La Grange, Sept. (Davis). 
Tibicen similaris (Sm. and Gr.) Fernandina (U. S. N. M.); 
Jacksonville, Sept., La Grange, Sept. (Davis). 
Tibicen viridifascia (Walk.) (sordidata Uhl.); “Southern Flor- 
ida’. Oviposits in stems of Sea Oats (Uniola) and lives in 
tidal zone of shore line as observed in North Carolina. (See 
Osborn & Metcalf. Annals E. S. A., Vol. 13, p. 108.) 
Tibicen vitripennis Say. “Florida” (Uhler). 
Tibicen hieroglyphica Say. “Apparently common throughout the 
southern portion of Florida’ (Van Duzee); Ormond (Mrs. 
Slosson) ; Lakeland, Mch., May, LaBelle, Apr., LaGrange, 
Sept. (Davis); St. Augustine (Johnson). Gainesville (C. 
JD) 
