166 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 95 
mentioned races; the tergal and paratergal plates are also closely - 
fused, with the suture almost invisible, as in truncatus. ‘There is 
some variation in the markings on the pleural plates, but I think that 
this may be due to the age of the specimens, the fully adult individuals 
having the incrassations more fully developed. 
MEASUREMENTS OF HEPTAPSOGASTER TESSELATUS 
ornatus oe pentlandi 
Structure Male Female Male Female 
Length} Width Leneth| Width } Length Width Length} Width 
a 
_— | 
BO yet we UU NURI UNM GE CD SRB) DO: Le Met bea pga 2 TT GR REO ED 1. 58 
PFOTIS UNTREATED) aa OF SSI Ne Oia vee ONS5SN | eae 0. 42 
Head;temples___.._._...----------- 0. 466 0. 59 0. 50 0. 595 0. 41 0. 58 0. 41 0. 62 
CCH Gee A SIN Oe a CO)ge: DAN Os a OS Aa iii |e a OFS58 Ge oe 0. 456 
IP TOCR OLAX Gee eM OME ALL OE NTS 0. 12 0. 28 0. 13 0. 30 0.13 0. 28 0. 135 0. 326 
Miesothora sn se He iuan nen nis Noa 0.17 0.586 | 0.195 | 0,60 0. 20 0.586 | 0.24 0. 63 
IMiCt ath OPa xia ees Gn a Lah Se RL RE 0. 15 0. 44 0.15 0.456 | 0.155 | 0.44 0.17 0. 48 
ADA OTMEN ele 2 Men Mani nea cta ng 0. 86 0. 72 0. 92 0. 78 0. 82 0.716 | 0.94 0. 805 
ANTONNACH see O ene eens 0. 195 0. 054 0. 174 0. 038 0. 228 0. 054 0. 174 0. 034 
IPATAMETS WMS ery ye Aa Ap Ulead ee CO76) ON OOS | aerate | toners 0..087>4:..0.105 |.-..---- 
Hndomeral'platen) ese ee ee a GOSS He Os O35 in| eerste 0. 108)) O.i085:).-- 22. 
HEPTAPSOGASTER TESSELATUS PENTLANDI, new subspecies 
Types.—Male and female, adults, from Vothoprocta p. pentlandi, col- 
lected by the author at Choros, Bolivia, January 10, 1937; in collection 
of author. 
Diagnosis.—This race is more or less intermediate between tesselatus 
and ornatus, having the shape of the head in the male as in the former, 
but with the genitalia of the latter, although with some differences in 
proportion, the paramers being slightly longer but of exactly the 
same width at the thickened basal portion, but they are set much 
farther apart, and so a pronounced open space remains between each 
paramer and the endomeral plate. The endomeral plate is of the same 
width as in ornatus, but slightly longer. 
The head is eomshdlon lel y smaller in all dimensions than in prneie, 
except the width at temples, which is almost the same. The prothorax 
and mesothorax are longer than in ornatus but of the same width, 
while the metathorax is exactly the same; the abdomen is shorter, but 
of the same width, while the antenna in the male is longer, but first 
segment of equal width. 
There are also considerable discrepancies in the measurements be- 
tween the female and that of ornatus (see table of measurements). 
The incrassations on the pleural plates are almost identical with those 
of ornatus. 
