406 APPENDIX C. 
portion, finely punctulate, the sulcus tolerably strong; the anterior 
part furnished with about ten fine transverse crests; the longitudi- 
nal striae extending upwards beyond the pore. Anal segment 
short; tergite short, its posterior border above densely punctured 
in the middle line and slightly produced into a bluntly rounded 
prominence which barely covers the apices of the valves; margins 
of valves weakly compressed. Legs, except those of the first and 
second pairs, and those on the posterior somites, with the fourth 
and fifth segments, padded distally. 
Copulatory feet; the shorter branch of the flagellum stout, cylin- 
drical, armed distally with a number of branched spiniform pro- 
cesses, the long branch thinner coiled, with a short basal process 
and a bifid apex. Number of segments, 71. Length, about 220 
mm. Width, about 17. 
9. With face rather more coarsely sculptured below, and nearly 
as long as the five basal antennal segments; anterior angle of the 
collum not produced; number of segments, 71; length, (?); 
width, 17.5. A second 2, without locality, has 68 segments. 
Locality, 3.10.94, Sheikh Husein, Arusha, in the Galla country, 
over 5,000 ft., wet and luxuriant (type d). ‘ Pools of water to the 
west of Shebeli River, 18.12.94, (¢)”’ 
Archispirostreptus smtthii, sp. n. 
Very closely allied to the preceding, from which it differs appar- 
ently only in the following particulars : — 
? The first tergite or collum is crossed transversely by only two 
complete sulci, one near the margin and the other considerably 
higherup. The margins of the anal valves are strongly compressed ; 
number of segments, 64. Length apparently about the same ; 
width, 19 mm. 
¢ The anterior angle of first tergite widely rounded, not pro- 
duced as in dodsonz ; copulatory feet a little different, though very 
similar, the lateral pieces raised much higher above the central 
sternal plate. 
Number of segments, 60; length, about 145 mm.; width, 13.5. 
Locality (¢), “ Aimola in the Boran country, 3,000 ft. alt., well 
watered ;” (2), Somaliland, 12.12.94; ‘“‘ The Haud,a huge plateau 
in Somaliland, 4,500 ft. alt.” 
The two species of Archisptrostreptus here described are unmis- 
takably allied to A. botteg? from Archeisa in Somaliland, and to A. 
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