174 PROCEEDINGS OF THE NATIONAL MUSEUM VOL, 95 
The chaetotaxy of the whole body is typical of the genus, presenting 
no unusual features (see fig.). The legs are of normal shape, although 
the femora are somewhat unusual, the first pair being short and very 
thick, while the other two pairs are elongated and of rather abnormal 
shape; the trochanter is large in the first and third legs, small in the 
second. The tergal plates are widely separated medially and closely 
fused with the paratergals, while the sternal sclerites are apparently 
wanting. The abdomen in the female, except for greater length and 
difference in terminal segment, is the same as in the male. 
RHYNCOTHURA TESTUDO (Clay) 
Heptapsogaster testudo CiAy, Proc. Zool. Soc. London, ser. B. 1937, p. 140, figs. 
2a, 3b, 3c, 4d, pl. 1, fig. 5. (Host: Nothura maculosa peruviana, Peru.) 
This species is unquestionably not a Heptapsogaster but a typical 
Rhyncothura. As stated in the introduction, true Heptapsogaster is 
not found on any of the Tinamidae inhabiting the grasslands (note 
species of questionable status), while RAyncothura is confined to that 
group (Tinamotis, Nothoprocta, Nothura, and Rhynchotes). Also, 
the genus Rhyncothura, as defined by the author, places no obstacle 
for the inclusion of testudo in it, while Heptapsogaster certainly does. 
Genus TRICHODOPEOSTUS Carriker 
TRICHODOPEOSTUS SPINOSUS PRAEGRACILIS, new subspecies 
Types.—Male and female, adults, from MNothocercus bonaparti, 
collected by the author at Tierra Nueva, Sierra Perijé, Colombia, July 
16, 1941; in U.S. National museum. 
Diagnosis —The characters separating this race from typical spino- 
sus are not conspicuous, but are constant, and may be briefly summed 
up as follows: 
The whole insect, as well as most of its component parts, is uni- 
formly smaller ; the proportions of the head vary considerably between 
the races and the sexes of the same race, the length in the male being 
less, with width at temples less, but at the frons practically the same. 
In female the length at the occiput is equal, slightly less at the temples, 
while the width at the temples is much more, with the frons the same 
(frons: 0.54 against 0.55; temples: 0.92 against 0.80). The thoracic 
segments are both shorter and narrower in both sexes, but there is 
little difference in width of abdomen (length of abdomen not always 
a reliable measurement). ‘The antennae in the male are longer and 
narrower (first segment), and in the female slightly longer but of equal 
width. 
Perhaps the most noticeable difference is in the male genitalia, which 
have the basal plate longer and narrower (0.44 by 0.11 against 0.88 by 
