415 
the material necessary to the construction of a new systematic ar- 
rangement of the members of this family, and must confine myself 
to the pointing out of the deficiencies of our knowledge. 
It is absolutely necessary to study the legs and the anal seg- 
ment of several species before it will be possible to establish genera 
of any value at all. The form examined by me is closely allied to or 
identical with E. Latzelii Cook — E. spinosus Latzel, not Ryder, 
but the animals differ from the description of Latzel in two points. 
The Austrian author says that in his 'species the legs ,,gleichen 
denen von Eurypauropus ornatus”, but his figure (21) of E. ornatus 
shows a metatarsus which does not exist in my species. Further- 
more Latzel writes: ,,Såmmtliche Seitenrånder, am ersten Ricken- 
schilde auch der Vorderrand, sind mit nach hinten gerichteten Håk- 
chen und darunter mit nach auswårts gerichteten kurzen Stacheln 
dicht besetzt; bejde Arten der Randbewaffnung scheinen je einreihig 
zu stehen...” Im my species the spines are shaped almost like a 
leaf (fig. 44); the hooks are arranged in two rows and in certain 
places in three distinct rows (fig. 4e), the one above the other, and 
those of the lower series longer and more protruding. It may be 
possible that Latzel has overlooked this arrangement, but I do not 
venture to refer my form without interrogation to his species. The 
other characters in his description agree rather well with my ani- 
mals, but as to one main point, the anal segment, he communicates 
nothing of interest, and the anal plate has been overlooked. 
Kenyon (op cit.) describes and figures the American species 
Eur. spinosus Ryder; Cook says correctly that E. spinosus Ryder 
differs from the Austrian form KE. spinosus Latzel, the latter of 
which he names Æ. Latzelii. E. Latzelii Cook is not only sharply 
defined from the real E. spinøsus Ryder, but if the animals exa- 
mined by me belong to E. Latzelii, this species must be referred 
to another genus than Eurypauropus, as Ryder founded this genus 
on E. spinosus. In E. spinosus Ryder seven pairs of the legs 
have a metatarsus (Kenyon, op. cit. p. 88, fig. 3), while tbis joint 
is wanting in all pairs of legs in my form. This can not be re- 
