1916.] NATURAL SCIENCES OF PHILADELPHIA. 545 
discussed in the second part of this series of papers^^ under the 
account of Tipula cayuga Alexander. A less detailed notice of the 
associates taken with the type will be found in the present paper 
under the account of Limnophila edwardi. 
Family PTYCHOPTERID^. 
BITTACOMORPHA Westwood. 
Bittacomorpha Westwood; London and Edinl)urjili Philosophical Magazine 
and Journal of Scitnice, vol. 6, p. 281 (18135). 
Subgenus BITTACOMORPHELLA subgen. n. 
Agrees with Bittacomorpha s. s., but the apical cells of the \\dngs 
with a sparse, strong pubescence, including the tip of cell Sc, all 
of 3nd Ri, tips of R3, Rt, R^, and 2nd M; in B. sackeni Roder, the 
pubescence is even more extensive, including the end of cell C, first 
Ri, all of cell Rt, almost the outer half of cells R3 and Ri,, and the 
ends of 2nd M and Cui] metatarsi of the legs not swollen. A cor- 
related character is the lack of a white ring near the base of the 
metatarsi. 
Type of the subgenus, Bittacomorpha jonesi Johnson. 
There are four species of this genus now known, two belonging to 
each subgenus, and their general distribution, seasonal and geo- 
graphical, may be summarized as follows: 
Bittacomorpha (Bittacomorplia) clavipes Fabricius. 
The ''Phantom Crane-fly" is one of our commonest and best- 
known species. It is a fly of the Canadian-Transitional to the 
Austral zones and has a wide range throughout America east of the 
Rockies, from Ontario, Quebec, New Brunswick, Nova Scotia and 
Newfoundland south to Florida, west to Manitoba and South Dakota. 
In New York and New England it is on the mng from May 17 to 
September 23, being common throughout the summer; in the southern 
part of its range it appears as early as February. The flies are 
abundant in low, wet swales, swamps, and along lakes and ponds. 
The curious rust-red lava with an extensile breathing tube is as 
remarkable as the adult fly. 
Bittacomorpha (Bittacomorpha) occidentalis Aldrich. 
Western United States, ranging from Washington to California, 
the latter records being for mid-May. 
Bittacomorpha (Bittacomorphella) jonesi Johnson. 
A fly of the Canadian life-zone of the northeastern United States, 
12 Proceedings of The Academy of Natural Sciences of Philadelfhia, 
p. 486, September, 1915. 
