382 NEW YORK STATE MUSEUM 
of larvae and pupae studied I did not find transitional charac- 
ters. Should a difference be discovered on the examination of 
more fresh specimens of both varieties of adults, the specific 
name of piscicidium must be revived. Riley’s description 
is as follows: 
Female. Head velvet-black; eyes brownish; antennae with 
joints 1, 2, 3.and 11, subequal in length, each of the others 
half as long. 1 and 2 rufous, 3 to 11 inclusive black and 
gradually diminishing in thickness to the last, which is fusi- 
form; palpi longer than the antennae, black. Thorax velvety 
black with faint fulvous pubescence above; halteres opaque and 
white. Abdomen nine jointed, joints equal in length except — 
the last two, which are smaller and smaller; dorsaily velvety 
black, laterally and ventrally, especially towards the base and. 
at the incisures, inclining more or less to rufous. Legs with the 
front trochanters white or fulvous, and the middle and hind 
ones more dusky; the coxae all either rufous or fulvous; the 
femora all dark, though sometimes (two specimens) the base is 
paler. Front tibiae with the upper three fourths white, the 
rest black; hind tibiae with the upper two thirds white, the rest 
black; middle tibiae with about the upper one half white, the 
rest black; front tarsi black; middle and hind tarsi with the 
upper half of first joint white or rufous, the rest black. Wings 
subhyaline, with the veins fuliginous. Length of the body (in 
alcoholic specimens) .14 to .17 inch. Mumford N. Y.—Riley 
Larva [p1.87, fig.2,5,7]. Pale grayish, slightly darker dorsally. 
Iiead of the usual shape, brown with darker margins. Fans 
with 50 to 60 rays, the longer cilia quite prominent. The apical 
pair of bristles of the mandibles present; the labrum with a 
serrated margin; the maxillary palpus with a few setae on last 
joint and also on base; hypopharynx as usual; labium with the 
toothed margin comparatively narrow; its teeth nearly uniform 
in size, with seven setae in each row on the ventral surface 
[fig.5]. Anal papillae, three much branched lobes. 
Pupa. The pupa with eight branched respiratory filaments, 
with four hooks curved cephalad on ventral surface of each of 
the segments 4, 5, 6 and 7, those on the fourth being quite small. 
On the dorsal surface of each of segments 3, 4, 5 and 6 are eight 
hooks curved cephalad, those of 5 and 6 being very small; and 
on the dorsal surface of 7 and 8 are a number of hooks curved 
caudad. The anal segment with two short, blunt spines. The 
pupal case is of the “ wall pocket” type. 
In order to obtain characters to separate the adults of the 
Tall creek, Saranac Inn and Axton varieties of venustum, 
