Casey — A Revision of the American Paederint. 129 
belongs to this genus, but it differs from any of the above 
forms in its more parallel sides, relatively smaller elytra and 
more converging sides of the head behind the eyes — among 
other characters. The Munich catalogue places castanea 
Grav., as a variety of longiuscula, but I have no means of 
confirming this at present. 
Pseudolathra n. gen. 
The two species at present comprising this genus are among 
the smallest known Lathrobiids; they have a peculiarly de- 
pressed form and extremely separated gular sutures, short 
hind tarsi, with the four basal joints very short and subequal, 
and other characters as stated in the table. They may be 
described as follows :— 
Form slender, subparallel, shining, the abdomen dull and very densely 
punctulate; body pale rufo-testaceous, the head blackish-piceous, the 
elytra sometimes piceous near the scutellum, the abdomen blackish, 
gradually rufescent toward the tip, the legs and antennae pale; head 
rather small, not coarsely, very sparsely punctate, slightly wider than 
long, parallel and straight at the sides, arcuato-truncate at base through- 
out the width, the angles obtuse but only very slightly rounded; eyes 
rather well developed, somewhat prominent, at scarcely twice their own 
length from the base; antennae rather thick, feebly incrassate distally, 
nearly one-half as long as the body, the medial joints about one-half 
longer than wide; prothorax distinctly wider than the head in the male, 
less obviously so in the female, oblong, only slightly longer than wide, 
the sides distinctly converging from the strongly marked apical, to the 
broadly rounded basal, angles, and straight, the punctures fine and very 
sparse, except a close-set subimpressed series along the median smooth 
line, which are coarser; elytra slightly longer than wide, a fourth 
wider and a fifth longer than the prothorax, the sides straight and dis- 
tinctly diverging throughout, the punctures rather sparse, fine, arranged 
in unimpressed series, confused toward tip; surface narrowly, deeply 
impressed along the sutural bead; abdomen nearly as wide as the 
elytra, minutely, very densely punctulate. Male with the fifth ventral 
unmodified, the sixth broadly rounded at tip, with a very shallow 
emargination in the form of a broad cusp, the adjacent surface with a 
small simple impression slightly longer than wide. Length 3.4 mm.; 
width 0.63 mm. Texas (Austin, Waco, Houston and Galveston), Louis- 
iana (Morgan City) and lowa. [=Americana Duviv.]......analis Lec. 
Form and lustre somewhat similar to the preceding but larger, dark piceous 
in color, the head and abdomen black, the latter only feebly paler at 
the immediate tip; legs and antennae pale; head small, nearly as long 
