318 ZOOLOGY 
broad bodies, and curl themselves up like wood-lice, and in this 
condition are very often mistaken for the latter. 
Fie. 182. 
1. Head and anterior somites of Siphon- 
ophora portoricensis. After Koch. 
2. Diagram of the arrangement of the 
anterior somites and appendages of 
d, 3rd or generative somite, devoid 
of appendages and sterna, but bearing 
the generative apertures. 
e. Single appendage of 4th somite. 
a female Zulus londonensis. After 
Moseley. 
a. Modified tergum of the 1st post- 
oral somite (dorsal plate or collum), 
6. A short single appendage of the 
same somite, of four joints and a 
J, g. Dual appendages of succeed- 
ing somites. 
3. Hook-like postcephalic appendage of 
male of same attached to its plate of 
support (=one half of modified 
sternum ?) 
claw only, turned towards the mouth. 4. Mandible of same. 
c. Single appendage of the 2nd 5, The four-lobed plate formed by the 
somite, of five joints and a claw like fused single pair of maxillae. 
the remaining appendages. 
Pauropus and Scolopendrella are genera which are sometimes 
placed in two different sub-orders, the Pauropidae and the 
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Fic, 183.—Enlarged view of Pawropus huxleyi. After Lubbock. 
Symphyla, which rank with the Chilopoda and Diplopoda. 
Pauropus is very small; it has ten segments, and Lupauropus 
