L. Harrison 
91 
short median rows on the abdominal tergites, with an afesenC'S ci latssai 
hairs save one at each side of the sixth segment. 
The ? has the same general form as the S, bnt is larger, as will b® 
seen from the measurements given, has filiform antennae, and th® ^ssual 
difference in shape and chaetotaxy of the hind end of the abdomeni 
(Fig. 2). The females of the three species are easily differentiated bj 
means of the shape of the genital plate, which in this species bears 
a median emargination, while in A. novae-zealandiae it is evenly rounded, 
and in A. gracilis has the shape of a truncated triangle. 
Fig. 1. 
Fig. 2. 
Measurements in inillimetres. 
i ? 
Head . 
LenKti) 
0-59 
Breadth 
0-62 
Length 
0-64 
Breadth 
0-67 
Prothorax. 
017 
0-40 
0-18 
0-44 
Metathorax . 
0-27 
0-57 
0-27 
0-64 
Abdomen (from anterior angles).. 
0-82 
0-71 
MS 
0-84 
Total length and greatest breadth 
i-76 
0-71 
215 
0-84 
Several eJeJ and numerous ?? from skins of Apteryx australis in the 
Cambridge University Museum. I also assign to this species a single 
$ from a skin of Apteryx nianteUi, which is larger than the type, but 
shows no differences of specific value. The discovery of the may. 
prove that this form is distinct. 
