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than the length of an eje. — All the (forsal hairs are pubescent; 
the two onter pairs in the fourth row are rather feebly, jet con- 
spicuously, clavate, while all the others are ratlier strongly clavate. 
The outer hairs in the second row are rather long, a little longer 
than the inner pair and than the hairs in the third row, besides 
not shorter than the submedian pair in the fourth row; the inter- 
mediate pair in this row is almost or quite as long as an eje and 
only a little longer than the sublateral pair. 
Antennæ (pi. II, fig. 1 a). The front hairs on the fourth joint 
are thin and verj long, the upper one as long as the three distal 
joints together and a little longer than the lower hair. The upper 
branch is often as long as the three distal joints together and 
sometimes as long as the whole peduncle, it is very siender, from 
five and a half times to eight times longer than broad; its lia- 
gellum is at most slightly more than twice as long as the stalk. 
The lower branch is about two thirds as long as the upper one, three 
times to three and a half times longer than broad, slightly in- 
creasing in breadth from the base to the end. witli the distal an- 
terior angle more obliquely cut off than the posterior one; the apterior 
fiagellum is slightly shorter than the posterior, which is somewhat 
shorter than that of the upper branch. All three flagella are very 
siender and scarcely thickened towards the apex. The hair at the 
front margin of the lower branch is inserted rather near the an- 
terior fiagellum. The globulus is rather small, not quite as broad 
as the upper branch; its stalk is generally much shorter than the 
transverse diameter of the globulus, in one specimen only a little 
shorter and in an immature animal (from Tilbingen) almost exactly 
as long as the diameter mentioned. 
Trimle (pi. I, fig. 3 a). Moderately robust. — The fifth pair of 
tactile setæ scarcely twice as long as the breadth of the segment, 
rather thin, with very short and delicate pubescence. The fourth 
pair slightly exceeding two thirds of the length of the fifth, and its 
setæ are somewhat thinner; the third pair is somewhat shorter and 
not thicker than the fourth, its basal half is cylindrical, the distal 
