148 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 95 
‘Diagnosis Represented by a single pair, the types. The front of 
the head is flattened also in this race but is much narrower than either 
yapurae or gatleppi and has the sides of front more abruptly curving 
backward to the trabecular tubercles; the sides of head are quite 
straight, with temples but slightly divergent, and pointed. The 
male head is quite similar to that of H. m. crucis (see fig.), both as 
to small size and shape, but differs as to detail. In the female ab- 
dominal segment VII has the apical protuberances short and the 
sides more concave than in the other races, while the genital sclerites 
are narrow and pointed at both ends. The male genitalia are dis- 
tinguished by the very short, slender paramers, proportionately large 
‘endomeral plate, large secondary lateral endomeral sclerites, and very 
short, straight, slender apical prongs on endomeral plate. ‘There also 
seems to be present a short. penis (not present in other races), while 
there are no internal strengthening struts in endomeral plate. The — 
scent gland is long, narrow, and crescent-shaped, as in yapurae. 
‘Measurements are given with those of H. m. crucis. 
HEPTAPSOGASTER MANDIBULARIS CRUCIS, new subspecies 
Ficurse 13, a, b 
‘Ty pe.—Male, adult, from Crypturellus obsoletus crucis, collected by 
the author at Shaienaein, Bolivia, November 14, 1937; in 1 collection of 
author. 
Diagnosis. —Represented by a nels male, the type. The head is 
very similar in shape to that of H. m. nigriceps, except that the front 
is less flattened, the sides undulating, and the trabecular tubercles 
strongly developed (very small in ngriceps), almost. filling the an- 
tennal fossae. The male genitalia are of medium size, with paramers 
slender, sharply bent inward at tips, and strongly concave. This 
concavity of the outer edge of the paramers is more marked in crucis 
than in any other known race of mandibularis. The endomeral 
plate is long and wide, two-thirds of which is composed of the apical 
prongs, which are the longest of any known race and are decidedly 
divergent at their tips. The lateral endomeral sclerites are well de- 
veloped and not superimposed. Scent gland of medium size, slender, 
and but slightly crescent-shaped. 
Remarks —tIt would be naturally supposed that this race would be 
the same as or very close to H. m. stultws Clay, from Crypturellus o. 
obsoletus (Argentina), but they are quite different, at least in the male 
genitalia, crucis having the endomeral prongs wider and longer than 
in any other known race of mandibularis. In H.m. stultus, the prongs 
are. very slender, parallel-sided, and curving ¢nward, not outward. 
The head also seems to be of slightly different shape. 
