26 
Psyche 
[March 
by having a submarginal and eight other striae on each 
elytron. 
Diagnosis : A small, ovate, moderately convex Copelatus 
with a distinct submarginal and five other distinct striae 
on each elytron (Sharp’s Group 9). The structure of the 
male aedeagus is diagnostic (Fig. 1) and indicates the re- 
lationship of the species to debilis Sharp (Fig.2). The lat- 
ter, however, is smaller, more elongate, less convex, less 
coarsely punctate, and the aedeagus differs in structure. 
Average length 4.63 mm. ; average width at middle of 
elytra 2.43 mm. 
Holotype male : Elongate oval, greatest width at about 
middle of elytra, moderately convex dorsally. Total length 
4.73 mm.; greatest width 2.43 mm. Width at base of pro- 
notum 2.19 mm.; width at apex of pronotum 1.30 mm.; 
length of pronotum at midline 0.86 mm. Length of pro- 
sternal process 0.76 mm.; length from apex of prosternal 
process to apex of coxal laminae 1.57 mm. Width between 
eyes 0.78 mm. Head: Microreticulate and moderately finely 
punctate, punctures on vertex separated by from 2 to 3 
times their diameter (coarser punctures in usual position 
for genus). Pronotum: Microreticulation and punctation 
on disk about as on head ; coarser punctures along anterior 
margin, laterally, and in two depressions near the base on 
either side of middle. Elytra : Microreticulation coarser 
and more irregular than on head and pronotum; punctures 
along suture and between the impressed striae coarser and 
denser than on head or pronotum. Each elytron with a sub- 
marginal and five other distinct, deeply impressed striae; 
no sutural stria ; first discal stria about twice as distant 
from the suture as from the second stria; first and second 
striae a little shorter at base than outer three; second and 
fifth striae somewhat abbreviated toward the apex (the 
fifth showing a tendency to turn inward and almost join 
the fourth toward the apex) ; submarginal stria originating 
just before middle of elytra and extending a little beyond 
termination of the 5th discal stria. Venter: Metasternum, 
coxal plates, and abdominal sternites microreticulate and 
with some parallel scratches, but not conspicuously punc- 
tate in any part. Prosternal process similar to that of 
