1883.] Lvblogy. 327 
Lysiopetalide and the characters are those, it appears to us, which 
indicate a group of Chilognaths (Diplopoda), standing below but 
equivalent in rank, perhaps, to the existing forms taken together. 
In his comparisons with the Chilognaths, the author seems to 
have had the Julidz in view, and not to have mentioned the Poly- 
desmidz or Lysiopetalidz ; for some of these and other Chilognaths 
have a “fusiform body.”. That the “ head appendages “are borne 
upon “a simple segment” is an assertion which Mr. Scudder's 
figures do not apparently indicate. The head is swollen on the 
í 
rows of spines or tubercles,” will apply to i 
the Lysiopetalidæ as well as to the group 
under consideration. The nature of the 
spines of the Archipolypoda forms a re- 
markable feature. They are often large, 
stiff and spined in certain genera—in one n | : 
genus (Eilecticus) they form simple warts. 3 
he singular spinulate spines give an outré, 
zarre appearance to these fossils; but an ; 
approach to them, we think (contrary to 
the author’s opinion, see p. 144, foot note 
3) is seen in the barbed setz on the seg- 
ments of the embryo Strongylosoma. The 
author does not refer to the spinulose or 
: Spined setz of Polyxenus, 
A, M. Edwards del. 
