58 



rods has begun and a pedicellaria has appeared in the middle of the 

 posterior end. There are epaulets across the base of the four main arms 

 as in the Mespilia-larYa, and posterolateral processes are developed, 



being supported by the 

 branches of the posterior 

 transverse rod as in the 

 Mespilia-larva. The shape 

 of the arms cannot be as- 

 certained. The anal lobe 

 is not very high, such as 

 is the case in the species 

 c; there are no vibratile 

 lobes, but there appears 

 to be a lobe on the dorsal 

 side, although apparently 

 not supported by a branch 

 from the dorsal arch. 



In the skeleton (Fig. 

 20) the eminently charac- 

 teristic feature is the post- 

 erior transverse rod, which 

 branches at the ends, the 

 upper branch being simple, 

 pointed, with only a few 

 small thorns, while the 

 lower branch bifurcates 

 twice, terminating in two 

 larger, outer, and two 

 smaller, inner branches, 

 each set along its posterior 

 edge with long thorns, the 

 whole structure recalling 

 the antlers of a deer. The 

 postoral and posterodorsal 

 rods are fenestrated in 

 their whole length, sparsely 

 thorny. The absorption of 

 the body rods is so far progressed that nothing can be said with regard 

 to their shape. The dorsal arch has a very long posterior prolongation 

 from its middle and a pair of rather long lateral branches directed ob- 

 liquely outwards. The preoral and antero-lateral rods are fmely thornv 



Fig. 20. Skeleton of Temnopleurld larva, species a; front 

 view. 22»/i. al. anterolateral rod; b. body rod; da. dorsal 

 arch; dtr. dorsal transverse rod; pd. posterodorsal; 

 pi. posterolateral; po. postoral; ptr. posterior transverse; 

 vtr. ventral transverse rod. 



