AQUATIC INSECTS IN NEW YORK- STATE 369 
the other spines and hooks are as described by Riley. This 
species has been reported from New York. I have also seen 
Specimens from Moscow and Albion Id., Lawrence Kan. and 
Axton N. Y.; those from Idaho and Kansas belonging to Pro- 
fessor Aldrich. 
| S. mexicanum Bellardi 
Saggio etc. Apx. 6. 1862 
Male. Black. Head black, front prominent, triangular, with 
whitish reflection; antennae black, first joint and base of second 
yellow; face prominent, black, the epistome yellowish, with 
grayish reflection; palpi black, paler at the base; thorax wide, 
Subquadrate, slightly convex, black, with a grayish reflection, 
with yellow pile? (aureo-squamuloso); humeri pale; pleurae 
black, anteriorly and posteriorly, with fuscous spots; scutellum 
fuscous; the halteres white; abdomen black, the base of the 
second segment pale yellowish, the second, third, fourth and 
fifth pale yellowish on the sides; fore and middle coxae wholly 
yellow, hind ones fuscous with yellow tips; fore femora wholly 
yellow, the middle and hind pairs fuscous black, at base and tip 
yellow; all tibiae fuscous-black with yellow bases; fore tarsi 
wholly black; middle tarsi black, with bases of all the joints. yel- 
low; hind tarsi black with base of first joint widely and second 
joint narrowly yellow; wings hyaline iridescent. Length 4mm; 
extended wings 9mm. 
Mexico. 
S. minutum Lugger 
=o, Vvittatum Zett.) 
Minn. Agric. Exp. Sta. Bul. 48. 1896. p.202. 
The bulletin mentioned above contains a figure of the female 
of a species which is said to be common near Minneapolis from 
May 15 to June 1. No description is given excepting the state- 
ment that it is very small. The figure represents a fly with an 
unstriped thorax, the abdomen with a dark fascia on each seg- 
ment, the fascia covering nearly the entire dorsal surface of 
each segment, excepting the narrow basal and lateral margins. 
Its legs are bicolored. Specimens bearing the label S. minu- 
tum received for study from Mr Washburn proved to be 8, vit- 
tatum Zett. 
S. occidentale Townsend 
Psyche. 1891 
Female. Cinereous; abdomen light fulvous. Head cinereous, 
eyes black; face cinereous, raised and somewhat darker in the 
center, sparsely clothed with fine silvery hairs; front cinereous, 
_ * 
