J. Waterston 
201 
Antennae. Length 0-23 mm. 
Length 
Breadth 
1 
0048 
0-060 
2 
0055 
0-040 
3 
0-050 
0-038 
4 
0-038 
0-036 
5 
0-038 
0-024 
Fig. 2. Polyylax calva, n. sp. $ (Accra). A, head (upper surface); B, head (under 
stirface); C, hind leg (posterior surface); D, hind leg (anterior surface); G, sternal 
markings. $ (Accra). E, lateral view of extruded genitaUa; H, posterior dorsal 
view of the same. $ (Zanzibar). F, genitalia (retracted). 
(J. The sexes are extremely alike. In the A the head is a little longer and the sides 
behind the antennae straighter than in the female. The antennae are relatively 
larger and stouter than in the female, and with practically the same absolute 
measurements; the second joint is a trifle longer, and distinctly contracted 
basally, so that the profile is subtriangular; the fourth joint is longer than 
broad. The postero-lateral spine is longer than in the female, three-fifths 
the width of the head. Chaetotaxy of head, legs and thorax as in the female. 
Abdomen. Bristles of pleurites as in the female; the long pairs on 7 and 8 slightly 
juore developed. Tergites 1 and 2 bear three rows of bristles in all (2, 4, 8); 
tergites 3-8 have a single row (7-9); while on tergite 9 there are four minute 
bristles. Sternites 2-6 inclusive bear two rows of bristles (7, 6) and there 
