392 
setæ about three times longer and considerably thicker than the 
submedian pair, slightly tapering and ringed in the distal half; the 
lateral pair is a little shorter than the submedian dorsal setæ; a 
third pair could not be seen with certainty. — The anal plate is 
about as long as broad, the lateral margins converge behind, and 
the plate is posteriorly cleft by a triangular incision into two oblong 
triangular, acute processes, nearly as long as the discoid portion 
of the plate. 
Legs. They are moderately short and increase a little in 
length posteriorly. The last (eigkth) pair is very similar to the 
ninth pair in P. pectinatus , perliaps slightly more siender, with 
the seta on the tibia somewhat longer, but the animals being im- 
mature a detailed description is of slight value. 
Copulatory Organs. They are small, conical processes not yet 
developed as in adult animals. 
Length. The largest of my immature specimens measures 
•93 mm. 
Locality. The specimens were captured (by the author) in a 
wood at Luzern (Helvetia), July 13. 1893. 
Remarks. This species is closely allied to P. pectinatus in 
most characters, especially in the arrangement and length of the 
setæ on the anal segment, but it is easily distinguislied by smaller 
eyes, longer anterior flagellum on the lower antennal branch, and 
above all by a very different shape of the anal plate; besides it is 
mueh larger than the species mentioned. 
16. Pauropus vulgaris n. sp. 
PI. V, fig. 2 a—2 g. 
Material. Of this species I have seen numerous specimens of 
both sexes and young ones in all stages of development. 
Head (fig. 2 a). The eyes are large, slightly more than twice 
as long as broad, and the distance between them is only a little 
more than half as long as their length. — Most of the liairs are 
slightly clavate, those in the first and second rows and the sub- 
