22 
Psyche 
[March 
larger size, different coloration, and in the structure of 
the male genitalia. Total length ranges from 2.9 to 3.1 
mm.; greatest width from about 1.9 to 2.1 mm. Average 
size based on measurements of eight specimens about 2.98 
by 1.96 mm. H. compressus, the only species so far taken 
in company with peninsularis , averages about 2.31 by 1.58 
mm. Peninsularis may represent a form of indianensis, 
but that species is still so rare in collections that I have 
had no material available for comparison except the unique 
female type. 
Holotype male: Form broadly oval, nearly hemis- 
pherical. Outline of body when viewed from above broadest 
at base of elytra, not much narrowed anteriorly, but nar- 
rowing posteriorly from the humeri with a slight sinuation 
near the middle of the elytra beyond which the elytra 
narrow again to the acuminate tips. Strongly convex above 
and below. Total length 2.92 mm. ; greatest width 1.98 mm. 
Width at base of pronotum 1.81 mm.; width at apex of 
pronotum 1.13 mm.; length of pronotum at midline 0.76 
mm. Length from base of prosternal process to apex of 
coxal lamina 1.43 mm. Width between eyes 0.73 mm. Head: 
Microreticulate with some irregularly spaced, moderately 
fine punctures. (Coarser punctures along inner margin of 
eyes and on front in usual position for genus.) Clypeus 
inconspicuously margined. Microsculpture of vertex with 
meshes regular and rather deeply impressed. Pronotum: 
Microsculpture much as on head. Punctation much coarser 
than on head, coarse and dense along anterior and posterior 
margins but somewhat finer and sparser on disk and 
toward sides. Punctures at apex and base of pronotum 
with some tendency to coalesce to form vermiculate sculp- 
ture. Elytra : Microsculpture less deeply impressed than 
on either the head or the pronotum (surface appearing 
more strongly polished). Punctation coarser than on pro- 
notum and arranged in roughly regular rows or striae 
running from base toward apex. (Three striae of hair 
bearing punctures vaguely discernible on each elytron). 
Apices and lateral margins of elytra less densely and more 
finely punctate than disk. A number of coarse punctures 
extending posteriorly from the humerus of each elytron 
