628 ON SOME PAUROPODA FROM N. S. WALES, 



less, in this condition, for three further days; and then, by the 

 splitting of the second cuticle through the whole of its length dor- 

 sally, issues out as an actively moving, hexapod larva. Up to this 

 stage, the eggs have been constantly guarded by the female; but, 

 from this on, the young are left to themselves, and move about 

 actively. 



The six-legged larva has an antenna with two basal joints only, 

 the distal telescoped into the proximal, so that a line, looking like 

 a division of the latter into two, is visible. The lower ramus of the 

 antenna is a little more than one half as long as the upper, and 

 bears subequal flagella, the anterior slightly longer. Both are less 

 than one-half the length of the upper flagellum. The hairs of the 

 head are arranged much as in the adult, but are all of the same 

 baton-shaped character. There are two behind each eye, and a 

 pair on either side of the midline close to the hind margin; in 

 front of these, a row of four, the outer pair slightly behind the 

 inner; in front, a pair, with a pair marginal at the same level; in 

 front of these, a row of six, and two in the midline, one above 

 (behind) the other, between the bases of the antennge. Three dor- 

 sal shields are present. The first covers the legless and first leg- 

 bearing segments, and is without tactile hairs; the second covers 

 the remaining leg-bearing segments, and bears a pair of tactile 

 setae, plumose through their distal three-fourths, projecting out- 

 wards and forwards from about one-fourth the length from the 

 anterior end; the third covers the pre-anal and part of the anal 

 segment, and bears a pair of similarly plumose tactile setae pro- 

 jecting backwards from the posterolateral corners. The first 

 shield has a row of four hairs in front of the hind margin, and a 

 hair in each antero-lateral angle, well on the shield ; the second has 

 a row of four along front and hind margins, the tactile setae being 

 just behind the antero-lateral pair; the third has a pair towards 

 the middle, a little behind the anterior margin, a pair a similar 

 distance in front of the posterior margin, a paiil lateral, longer, 

 midway between them, behind which are the tactile setae. The anal 

 segment ends in a button -like process, similar to that of the adult, 

 overhanging the anal plate. Its three pairs of hairs are situated 



