347 
head witli exception of the eyes is exceedingly shortly and delicatelv 
pubescent. 
Antennæ (fig. 2 a). The longest of the two front hairs 011 the 
fouith joint is almost as long as the three distal joints togetlier 
and about twice as long as the other; both are shortly pubescent 
and not very thin. The upper branch is as long as the peduncle, 
about six times longer than broad; its flagellum is not fully twice 
as long as the branch. The lower branch is only a little shorter 
than the upper one and almost four times longer than broad; the 
distal margin as in the preceding species; the anterior flagellum 
is scarcely twice as long as the branch, and the posterior flagellum 
is thiee fifths of the anterior; all three flagella are more robust 
than in St. pedunculatus and scarcely thickened distally. The 
globulus is a little longer than thick (fig. 2 b) and three times 
thicker than the middle of the stalk; this is cylindrical in its 
proximal three fourths and from thence it thickens gradually. _ 
The peduncle and the branches are pubescent like the head. 
Trunk. Moderately robust. — The fiftli pair of tactile setæ 
are scarcely two and one third times longer than the breadth of 
the segment; in other respects the tactile setæ of all three pairs 
almost as in St. pedunculatus. — The six setæ in the posterior 
row on the penultimate segment and the six setæ on the last seg¬ 
ment are all more or less tapering and adorned with proportio- 
nately very long pubescence; the submedian setæ on the last seg¬ 
ment are a little longer than the others and slightly more than 
one third of the breadth of the segment. — The whole trunk is 
densely pubescent; anteriorly the pubescence is exceedingly short, 
posteriorly it is very conspicuous. 
Anal Segment (fig. 2 c and 2 d). The tergum is posteriorly 
produced into a rather small triangular process which is about as 
long as broad. The setæ are arranged almost as in St. peduncu¬ 
latus ; those of the submedian pair are placed still a little nearer 
to each other, they are half as long as the longest setæ on the 
preceding segment and a little longer than the intermediate pair, 
