1915.] NATURAL SCIENCES OF PHILADELPHIA. 465 
T. tesselata, Century IV, No. 3, pp. 277, 278. 
The monotype only, a 9 , Labrador (Schneider) . 
T. umbrosa, Century IV, No. 31, p. 292. 
The monotype only, a cf, Louisiana (Schaum). 
T. valida, Century IV, No. 21, pp. 287, 288. 
Eight specimens in the type-series; (1), 9, No. 293, Illinois; 
(2), cf, Virginia. The male sex is not mentioned in the original 
description. The Massachusetts specimens have lost the locality- 
labels. 
Lectotype, 9 , Illinois. 
T. versicolor, Century IV, No. 17, p. 285. 
The monotype only, a 9 . Illinois, bearing the label "versicolor m." 
Part 2. Description of New or Little-known Species. 
Family TIPULID^. 
Sub-family TIPULIN^. 
Tribe Tipulini. 
NEPHROTOMA Meigen. 
Pales Meigen; Xoiivelle Cla.s8ification des Mouches, p. 14; 1800 {nomen 
nudem). 
Nephrotoma Meigen; Illiger's Magazine, p. 262; 1803. 
Pachyrrhiria Macquart; Histoire Naturelle des Insectes; Dipteres I, p. 88; 
1834. 
The genus Nephrotoma was erected by Meigen in 1803 to include 
the Fabrician species, dorsalis. The insect mentioned, specimens 
of which are before me (L^rdingen, Niederrhein, Germany; Riedel, 
collector) , is a typical Pachyrrhina of the same group as eucera Loew 
(Nearctic). The venational details and the characters of the male 
hypopygium are altogether of the nature of those occurring in Pachyr- 
rhina. Loew, in a foot-note to the characterization of eucera {Ber- 
liner Entomologische Zeitschrift, VH, Century 4, p. 297; 1863) states 
that if Nephrotoma is to be separated from Pachyrrhina, eucera 
should l)e referred to Nephrotoma. The antennae of eucera and dorsalis 
are 19-segmented in the male; of pohjmera, 16-segmented in the 
male; of the majority of the species of the genus, 13-segmented in 
the male. Thus we see there is a very considerable range in the 
number of antennal segments, but the species included are^all so 
very similar in the details of venation, in the male hypopygia and in 
their general habitus and body-coloration that they should not be 
separated, especially since the females show a very much lesser 
range in the number of antennal segments (13 to 15). A considerable 
