Sept. 1896 ] 
Scudder : North American Nemobius. 
103 
( 35 oo 0 > b ut White Mountains, N. H., it occurs only in the val¬ 
leys, so far as yet known. 
Nemobius canus, sp. nov. 
Head rather large and pretty full, beset with black bristles, gray from a mingl¬ 
ing of dull fuscous and testaceous, above and posteriorly often separated into longi¬ 
tudinal stripes, the lower part of the face lutescent; eyes moderately prominent, 
subglobose; antennae luteous, more or less, but nearly always slightly, infuscated; 
maxillary palpi luteous, the last joint infuscated, apically excised with a transverse 
obliquity. Pronotum subequal with slightly convex sides, generally less than half 
as broad again as long, sparsely beset with moderately long black bristles, luteo- 
testaceous, flecked more or less feebly, or suffused more or less generally with fuscous, 
especially mesially above and inferiorly on the sides, on the latter deepening to a 
fuscous stripe. Tegmina of $ hardly covering the abdomen, light testaceous often 
infumated toward base, laterally with an equal fuscous stripe next the dorsal area; of 
^ with an added fuscous longitudinal stripe on the dorsal face, outwardly, and either 
but little longer than half the abdomen and truncate ( brevis ), or nearly as long as 
the abdomen and well rounded ( ampins ); wings either wanting ( brevis ) or twice 
as long as the tegmina (ampins). Legs luteo-testaceous, the hind femora a little 
infuscated. Cerci fuscous, slender, scarcely longer than head and pronotum together. 
Ovipositor much longer than the hind femora, straight, the apical blades n )t enlarged 
at the base, regularly narrowing by the slope of the inferior margin, the tip acute, 
the upper edges serrate, the teeth not crowded. Length of body, <^,8.5 mm., £ , 
12 mm.; of hind femora, $ , 7.5 mm., 9 > 8.6 mm.; of ovipositor, 9.5 mm. 
6 <?, 10 q . Dallas, Texas, (Boll); Texas, (Belfrage, Lincecum). 
This species is closely allied to N. fasciatus , like which it appears 
in two forms, brachypterous and macropterous. It is possibly only a 
geographical race of that species, remarkable for its cinereous aspect 
and the striped appearance of the 9 tegmina. 
Nemobius socius. 
Nemobius socius Scudder ! Proc. Post. Soc. Nat. Hist. XIX, 37 (1877). 
This species was described from a single female from Georgia, in 
which the tegmina are almost as long as the abdomen, and the wings, if 
present, wholly concealed. It is the only such specimen I have seen. 
All the others, of whichever sex, have the wings very long. Addi¬ 
tional specimens come from Sandford (Frazer) and Charlotte Harbor, 
Fla. (Mrs. A. T. Slosson), from New Orleans, La. (Akhurst, Schaum), 
and from Texas (Lincecum, “under stones” Belfrage, Bell, Aaron) 
the last from the Gulf Coast. 
Nemobius utahensis, sp. nov. 
Head not very full, dark fuscous mottled more or less with tawny, sometimes 
forming longitudinal streaks; eyes not very prominent; antennae testaceous or cin¬ 
ereous; maxillary palpi dull testaceous, the apical joint, excepting the basal third, 
