764 : The American Naturalist. [August, 
Mentum broader than long, quite bristly, the anterior margin pro- 
duced at middle and emarginate at sides, the process bearing two long 
bristles which are approximated at tip and give the appearance of a 
single long stout'spine. Palpi with large basal, shorter second and ex- 
tremely minute third joint, the basal one alone somewhat feebly 
spinous. 
Prothorax narrower anteriorly, about one-fourth broader than long, 
lateral and basal marginal lines distinct, anterior margin somewhat 
broadly depressed, angles rounded ; an impressed median line is found, 
on each side, of which, is a less well-defined slightly oblique channel, 
deeply punctate at bottom. The whole disk is irregularly punctured, 
with intervening smooth spaces, the most evident of which are on each 
side of the above-described lateral grooves. 
Meso- and metathorax, taken together, shorter than the prothorax, 
the impressions similar but broader and less well-defined, the discal 
punctures with a tendency to coalesce and form transverse rug. 
Abdomen of nine true segments, slowly tapering, the margins of the 
first eight paler and apparently somewhat membranous in structure, 
the ninth bearing a long tubular anal segment and two processes which 
latter about equal the rest of the body in length and are black with a 
broad sub-basal orange band. These processes are rather thickly finely 
bristled and under high power the dark portions give a segmented ap- 
pearance due probably to the surface being roughened by transverse 
ridges or scales. 
Legs of an ordinary carabidous form—the figure shows a posterior 
member. 
Pupa 10°5 mm. in length, the thorax narrow, with many dorsal 
bristles, the sides of the abdominal segments somewhat produced as 
shown in the figure. 
The larvæ described were taken in July at Bayfield, Wis., under 
pieces of wood near ponds. They are hard to rear and only a small 
proportion could be brought to maturity. If the figures given by 
Schaupp’ are correct, the larva of my species differs greatly from his 
in the immense length of the caudal setz. 
DORYPHORA (Mycocoryna) LINEOLATA Stal. 
Living larve cream-colored, pronotum with a yellowish tinge, head of 
a very light amber, legs black. The mandibles are dark, the tip of the 
antennz and a frontal spot in the shape of a broad inverted V are black, 
as are also the front and hind margins of the pronotum. There isa 
* Tom. cit. Pl. (I), fig. B. 
