536 PROCEEDINGS OF THE ACADEMY OF [Oct., 
sisted of the dominant palmetto (Sahal Palmetto (Walt) R. & S.), 
live oak, Quercus virginiana, heavily draped with Spanish moss, 
Tillandsia, and the coast white cedar, Chamcecyparis thuyoides. The 
shrubbery consisted of a mixed growth of Myrica carolinensis, 
common; Ilex vomitoria, several; Callicarpa americana, abundant, 
and two shrubby Composites, Iva frutescens and Borrichia jrutescens, 
common. The undergrowth from which the Tipulids were swept 
consisted of great beds of Polygonum punctatum, with a more sparse 
admixture of spike grass, Distichlis spicata; Hydrocotyle U7nbellata; 
and the Verbenaceous plants, Lippia nodiflora and Verbena 
caroliniana}'^ 
The Tipulidae of the above floral association showed a strong 
Floridian tendency, the associates of Polymera being as follows : 
Dicranomyia distans, abundant; D. floridana, rare; Teucholahis 
carolinensis, rare; Gonomyia (Leiponeura) puer, rare; G. (Gonomyella) 
slossonce, several; Erioptera (Mesocyphona) parva, abundant, and 
Brachyprenifia dispellens, common. 
Tribe Pedicini. 
TRICYPHONA Zetterstedt. 
1838. Tricyphona Zetterstedt; Insecta Lapponica, Dittera, p. 851. 
This genus, like the tribe Pedicini in general, has a northern 
distribution throughout the world. There are seven species now 
kno"s\Ti in the eastern United States which may be summarized as 
follows : 
Tricyphona inconstans Osten Sacken. (Plate XXVIII. fig. 47.) 
Canadian and Transitional-Canadian zones of the eastern United 
States and Canada. One of our commonest and best-kno\vn crane- 
flies, ranging from Ontario, Quebec and Newfoundland south (in the 
mountains) to Georgia and west to Michigan. It is also recorded 
from Europe, but a very careful comparison with abundant material 
and a critical study of the male hypopygium must be made before 
these records can be finally accepted. The fly is abundant in swamps 
and low swales. In New York and New England it is on the wing 
from May 12 to September 28, while in the vicinity of Washington 
it appears even earlier (Great Falls, Virginia, April 20, 1913 (Knab)). 
Tricyphona calcar Osten Sacken. (Plate XXVIII, fig. 48.) 
Canadian life-zone of northeastern America, ranging from the 
Huclsons Bay region, Ontario and Quebec south (in the mountains) 
" I am indebted to Mr. W. L. McAtee, of the United States Biological Survey^ 
for his kindness in determining many of the above-listed plants. 
