H. Scott 
603^ 
of varying lengths, set rather wide apart (as on the preceding sternites), 
there being one very long bristle on either side near the angle; the 
surface of the sternite behind the submarginal series is bare. The 
parts of the anal segment visible ventrally on either side of the claspers 
are bare at the base, but distally have numerous erect bristles 
directed outwards; the claspers lie very wdde apart, and are curved 
inwards and slightly dorsalwards at the apex; each bears one very 
long bristle near its base, and a number of short bristles, but the apical 
portion is bare. 
$ Abdomen (Fig. 3). Basal tergite of remarkable form, produced 
backwards with rounded margin in the middle: on the surface this 
middle part is bounded on either side by a line of dark brownish pig¬ 
ment, so that the tergite appears to consist of a nearly round median, 
and of two separate lateral, portions: the basal part of the median 
portion is soft and whitish, and bears some extremely minute rudiments 
of bristles, otherwise the surface is bare; the margin also is bare except 
in the rounded middle part, which has a series of about 14 long bristles, 
the median ones of which are slightly longer than the outer. Tergite 2 
sinuate and slightly produced in the middle: surface bare, except for 
a small median area, which bears very minute short bristles: margin 
furnished with a series of bristles of varying length, those in the middle 
close together (and the 4 nearest the middle line very long), those to¬ 
wards the sides wide apart. Behind tergite 2 is an expanse of bare 
whitish connexivum, posterior to which, and immediately in front of 
the anal segment, is a widely and bluntly triangular chitinous area, 
with a marginal series of long bristles, of which the median are longer 
than the lateral, and with a number of short submarginal bristles on 
the surface. Anal segment tapering considerably, its mid-dorsal portion 
bare (even including the hind margin), its lateral parts densely covered 
with moderately long erect bristles, and bearing several very long bristles 
near each hind angle. 
Ventrally (Fig. 4), the hasal sternite differs decidedly from that of 
the -(J, a difference which is exceptional among Nycteribiidae^: it is 
proportionately longer, its hind margin is more curved, the bristles of 
the surface are sparser, and appear to be absent in the submarginal as 
well as the extreme basal portion: there is no trace of ctenidium, and 
only a few bristles very wide apart on the median part of the margin. 
Posterior to this is an area of soft w'hitish connexivum, bearing a curved 
series of 8 very long bristles, the convexity of the curve being directed 
1 An extreme case is provided by Ctjclopodia roylei (Westwood); see Scott, 1914a, p. 225. 
39—5 
