Casey — A Revision of the American Paederini. 141 
blackish-piceous, the prothorax but slightly paler; elytra with a piceous 
scutellar cloud; abdomen rufescent at tip, the legs and antennae pale; 
head larger, coarsely and rather less sparsely punctate, parallel, the 
basal angles moderately rounded; eyes at twice their length from the 
base; antennae rather slender, nearly half as long as the body, feebly 
incrassate distally, the medial joints two-thirds longer than wide; pro- 
thorax elongate, scarcely visibly wider than the head, subparallel, all 
the angles well rounded, the punctures fine, sparse, more distinct and 
rather unevenly crowded in the feebly impressed series along the medial 
smooth area; elytra elongate, the sides straight and very feebly diverg- 
ent, about a fourth wider and scarcely a third longer than the prothorax, 
punctured nearly as in ambigua; abdomen parallel, subequal in width 
to the elytra, finely but strongly, densely punctulate and rather dull. 
Male unknown; female with the sixth ventral very broadly rounded and 
obtuse at tip. Length 4.3 mm.; width 0.68mm. Indiana? (Cab. Levette). 
integra n. sp. 
Form slender and parallel, normally convex, larger than the two preceding, 
pale and bright testaceous in color,the head and abdomen black or slightly 
piceous, the latter rufescent at tip; head very sparsely, rather coarsely 
punctate, parallel, the basal angles rather well rounded; eyes at slightly 
less than twice their own length from the base; antennae moderately long 
and slender, only just visibly incrassate, the medial joints three-fourths 
longer than wide; neck one-half as wide as the head; prothorax oblong, 
parallel, the sides straight, all the angles rounded, distinctly elongate 
and slightly wider than the head, the punctures rather small but strong, 
only moderately sparse, not larger and only indistinctly seriate along 
the median smooth space; elytra slightly elongate, parallel and straight 
at the sides, a third wider and one-fourth longer than the prothorax, 
the punctures fine but distinct, rather close-set in very feebly impressed 
narrow series; impression along the sutural bead narrow but deep and 
conspicuous; abdomen subparallel, narrower than the elytra, finely, 
densely punctulate though slightly shining. Maleunknown; female with 
the sixth ventral broadly rounded attip. Length 5.2 mm.; width 0.78 
mm. North Carolina (Asheville)...........-....-.--angustula n. sp. 
The eccentricity and asymmetry of the secondary male sex- 
ual modifications seems to be a reality in many species of this 
genus, for it is unlikely that abnormalities of this kind would 
occur with such uniformity and with such constancy of charac- 
ter. In this connection the reader is referred to a pronounced 
asymmetry in the secondary sexual characters of Palaminus, 
alluded to some years ago by the writer. There are four quite 
distinct types of male sexual characters in Lathrobiella: first 
the usual triangular notch of the ventralis and collaris groups, 
also appearing in aemula and probably merens; second the 
more strongly marked modifications characterizing modesta — 
