60 DIPLOPODA. 
dorsally, but never replaced by a secondary sulcus lying in front of the 
pore; phallopod, where known, with its distal segment long and slender, 
the guard of the seminal style much shorter than the segment. 
b. Scobina unspecialized, the extremities of the groove defining the impres- 
sion turned outwards, i. e. away from each other; the striz of the 
striate area very coarse, hardly more numerous and hardly finer than 
those of the adjacent area of the terga; the longitudinal striz of the 
posterior portion of the segment extending at least as high as the pores. 
b'. Scobina specialized, the extremities of the groove incurled towards each 
other, thus forming a crescentic or subcrescentic impression ; the striz of 
the striate area very fine and numerous ; longitudinal grooves of posterior 
portion of segments not extending halfway up to the pore. 
c. Sensory papille on apical segment of antennz very numerous, variable 
in number, and close-set. 
d. Scobina very small and not extending posteriorly as far as the middle 
segment of the body; infero-lateral edge of first tergal plate not 
widely rounded, subangular, its anterior border slightly cut away . 
d'. Scobina large, extending posteriorly past the middle segment of the 
body ; infero-lateral edge of first tergal plate evenly rounded. 
e. Sternal plate of anal segment very short, longitudinally convex, 
and not or hardly longer than the sternal area of the preceding 
segment, its posterior border straight and transverse; dorsal 
area of the segments irregularly tubercular in front . . . . 
e'. Sternal plate of anal segment at least twice as long as the sternal 
area of the preceding segment, its posterior border angular or 
strongly convex; no tubercles on dorsal area of the segments. 
f. Antenne much longer than head; legs and antenne dark, at 
least in their basal half . 2 2. 6. 1 6 we ew ee eee 
f’. Antenne shorter or at least not longer than head; legs and 
antenne uniformly pale. 
g. Colour crimson; sternal plate of anal segment with convex 
posterior edge, and marked in front with a transverse groove. 
g'. Colour red, banded with green (? black) ; sternal plate of anal 
segment with angular edge and no anterior groove . . 
c'. Sensory papille on apical segment of antenne few in number (4-5) 
and widely spaced. 
h. Scobinze very wide, each about twice as wide as the area between 
them on the middle segments of the body; inferior horizontal 
area of second segment with a deep transverse groove behind the 
thickened anterior edge. «6 + + ee ee ew ee 
h'. Scobine narrower, separated by a space which is not less than twice 
the transverse diameter of each; inferior horizontal area of second 
segment shorter, without any transverse groove behind the thin 
upstanding anterior edge. 
olivaceus, Newp. 
rogerst, sp. N. 
marci, Sp. D, 
rigt, sp. Nn. 
aposematus, sp. 0. 
tristani, sp. n. 
scobinatus, sp. n. 
