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Morphology of the Myriopoda. 347 
Myriopods, being 5-joited and bifurcate, somewhat as in 
certain Coleopterous larvee; the peculiar sense-filaments may 
be the homologues of the flattened sense-sete at the end of 
the antennee of Diplopod Myriopods. 
The “ mandibles”’ are rudimentary, very simple, and are 
scarcely more like Chilopod than Diplopod protomale ; there 
is a second pair of appendages which, as Lubbock states, are 
“ minute and conical ;” they bear a closer resemblance in 
position and general appearance to the “ under lip”’ of Chilo- 
gunaths, especially the under lip of Stphonophora; in fact, the 
mouth-appendages of Pauropus are much nearer the normal 
type of those of the true Chilognaths than the degraded 
mouth-organs of the Sugentia. 
The body of Pauwropus is cylindrical, the scutes are as much 
like those of Polywenus as those of the Chilopods ; the number 
of body-segments is seven, the same as in the larve of certain 
Diplopods ; the feet are 6-jointed as in Diplopods, and there 
are nine pairs, six pairs to the four penultimate segments. 
The three anterior pairs are developed from two segments, 
2. e, arise from the ventral and lateral sclerites corresponding 
to two scutes. ‘This fact should not, we venture to suggest, 
exclude them from the Chilognaths, as there is a considerable 
irregularity in the position of the three pairs of anterior feet 
in larval Chilognaths. ‘The terminal body-segment is much 
as in Chilognaths. When we examine the larva of Pauropus 
we find a strong resemblance to the larval hexapodous Chilo- 
gnaths. Hence we scarcely see good grounds for placing 
Pauropus ina distinct order from Chilognaths. Their dis- 
tinctive characters, and they are important ones, are, we 
submit, only of subordinate value, and we should therefore 
place the Pauropoda as a second suborder of Chilognaths, 
throwing all the genuine Chilognaths into a first suborder. 
Turning to Lurypauropus we find that this singular form 
is in a degree a connecting link between Pauropus and Poly- 
venus; the head has much the same shape, the antenne being 
inserted beneath far back from the front edge of the broad top; 
the legs are of much the same shape, and more truly diplopod 
than in Pauropus, and they are arranged nearly in two pairs 
to a segment; there are six segments, four of them bearing 
legs, there being nine pairs of legs to four scuta. ‘The scutes 
are much as in Polyxenus, spreading out flat on the sides, the 
animal being elliptical oblong, broad and flat. There are no 
true sternites like those of Chilopods ; and though the feet are 
inserted wider apart, the entire structure of the soft membra- 
nous sternal region is much as in Polyxenus. We theretore 
feel warranted, although originally accepting the ordinal rank 
