AQUATIC INSECTS IN NEW YORK STATBH aht 
black; in front, opaque with a silvery shimmer, and with sparse, 
short, curly, golden yellow tomentum; behind, shining. Pleura 
black, whitish pruinose. Abdomen black, the basal segments 
opaque, the distal four segments somewhat shining, and with a 
delicate whitish pruinosity. Legs reddish yellow; tarsi black, 
except that the proximal half of the middle and hind metatarsi 
is light yellow; first and third joints of the front pair each with 
two long hairs; second and third joints of the same pair dilated, 
the fourth and fifth very small; hind metatarsi elongate and 
stout, the following two joints a little dilated, the fourth and 
fifth small. Wings hyaline; veins vellow. Williston 
Three specimens. The above synonymy is according to Hun- 
ten 
This species seems to resemble greatly S. venustum ex- 
cepting for the color of its legs. 
S. quadrivittatum Loew 
Berl. Ent. Zeitschr. 1862. Centur. 2, p.186 
Black opaque, the thorax with four white vittae; the halteres 
yellow; middle and hind tibiae and tarsi white banded; wings 
hyaline. Body 1.67mm; wing 1.67mm. 
Black, opaque. Antennae fuscous; dorsum of the thorax with 
four longitudinal lines, the posterior margin whitish pollinose; 
scutellum spotless; the pleural spots and the metanotum 
whitish pollinose; the legs fuscous black; the knees and the 
bases of the metatarsi of the fore legs, the basal rings of the 
middle and hind tibiae, the metatarsi excepting the tip, and the 
bases of the second and third tarsal joints are white; halteres 
yellow; wings hyaline, the heavier veins deep yellow. Ouba. 
S. reptans Linnaeus 
Fauna Suec. 1803. 1761 (Synonymy according to Schiner, 2) 
1767 sericea Linnaeus, Syst. Nat. 12:978, no. 58 
1776 erythrocephala DeGeer, Ins. 6:161, no. 37 (Tipula) 
1781 reptans L. Schrank, Enum. Ins. Austr. p.985 (Culex) 
1804 argyropeza Meigen, Syst. Beschr. 1:291-92 
1818 reptans Meigen, Syst. Beschr. 1:291-92 
1818 sericea Meigen, Syst. Beschr. 1:296-98 
1818 elegans Meigen, Syst. Beschr. 1:296-99 
1818 variegata Meigen, Syst. Beschr. 1:292-98 
18238 reptans Fries, Obs. Entomol. Pars 1 Monogr, Simul. 1:13 
1880 cincta Meigen, Syst. Beschr. 6:311-14 
1838 posticata Meigen, Syst. Beschr. 7:52, 21 
Male. Velvet-black; dorsum of the thorax with a gilvery white 
margin, spotlike on the humerus, broadly interrupted in front; 
