164 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 95 
HEPTAPSOGASTER PLATYCEPHALUS ASYMMETRICUS, new subspecies 
FIGuRE 17, , Cc 
Types.—Male and female, adults, from Crypturellus obsoletus pun- 
ensis, collected by the author at Samaipata, Bolivia, November 2, 1937; 
in collection of author. 
Deagnosis.—In general appearance this race is very similar to H. p. 
platycephalus, with the same markings on head and body and same 
chaetotaxy, having (in the male) one hair and one spine on the pos- 
terior margin of pleurite II; the:same on III; one spine and two hairs 
on IV; and three hairs on V. The seventh abdominal segment is not 
circular on posterior margin but has lateral margins straighter and 
sinuated, while the chaetotaxy is slightly different (see fig.). 
The insect is much larger than platycephalus in most body di- 
mensions, except that the male genitalia have the endomeral plate 
slightly shorter and wider. The proportions of the head are also 
different, while the prothorax and mesothorax are actually shorter 
and the metathorax narrower; the abdomen is much longer (1.06 
against 0.95) but scarcely wider (0.70 against 0.68). The most strik- 
ing differences are found in the male genital armature. ‘The paramers 
are much longer (0.14 against 0.11) and very much slenderer, with 
the base differently shaped; the single endomeral plate presents a 
character heretofore not seen by the author. It hes on top of the 
basal plate and paramers (not unusual), but on its left side, at poste-. 
rior portion, is a curious appendage, joined to the plate at the base 
of the penis. This character is uniform in all males taken from this 
host, regardless of locality. I cannot conceive what may be the func- 
tion of this appendage. In Z. p. sout the male genitalia are of the 
same pattern as in platycephalus, but the paramers are much shorter 
and the endomeral plate differently shaped. 
HEPTAPSOGASTER TESSELATUS ORNATUS, new subspecies 
Figure 17, d-f 
Types.—Male and female, adults, from Mothoprocta o. ornata, col- 
lected by the author at Callipampa, Bolivia, June 14, 1936; in collec- 
tion of author. 
Diagnosis —Nearest to H. t. truncatus Carriker, having the male 
genital armature very similar to that form; the incrassations on the 
paratergal plates are more pronounced and of a type different from 
truncatus. ‘The head in the male is very much narrower at the temp- 
les than in ¢esselatus or truncatus, being almost the same shape as 
in the female of ¢esselatus, the pleural plates are more deeply pig- 
mented, and the prothorax has the sides less convex than in the above- 
