26 . Proceedings of the Roi/al Irish Academy. 



all insects — the palp of the maxillula is vestigial (see figs. 5, 38, Mxl), and 

 it seems unlikely that in the lapygidae and Campodeidae the maxillulav palp 

 should be well developed and the maxillary utterly vanislied. 



The labium (figs. 145, 152) is, as Silvestri has pointed out ('99, p. 393), 

 closely like that of Campodea, but his figures (I.e. pi. 6, figs. 7, 8) are 

 imperfect in detail. The sub-menfum (fig. 152 s.m.) lies directly in front of 

 the prothoracic presternum (pst), and the mentwm [m] is reduced in extent. 

 The ovoid protuberances [v], covered with sensory spines, are probably rightly 

 regarded by Silvestri as palps, while the small conical processes {I), which 

 Meinert ('65) considered to be palps, are evidently — from their internal 

 position, as Silvestri has seen — laciniae. The broad, bristle-bearing lobes that 

 project behind the mouth (fig. 152 g) must thus be recognized as galeae. 



The legs in their relative lengths and in the proportions of their segments 

 agree closely with those of L. JFcbiri. The most remarkable feature of these 

 limbs is found in the beautifully fringed processes — apparently pulvilli 

 (fig. 146 2^0 — projecting on either side from the small claw-like empodium 

 (emp) below the strongly curved claws (cl). From Oudemans' description 

 and figure ('90, p. 77, pi. vii, fig. 8) it seems that these pulvilli in our 

 Seychelles insect resemble very nearly those of his species. The pulvillus is 

 a delicate, leaf-like plate, both edges of which bear series of stiff, slightly 

 clubbed bristles projecting as a fringe, those of the outer series being longer 

 than those of the inner. Silvestri's drawing of the foot of the South 

 American Lepidocampa ('99, pi. 7, fig. 19) represents the whole surface of the 

 pulvillus as covered by a number of rather feeble hairs, an entirely different 

 arrangement from that found in L fimhriatipes. 



The first abdommal segment, with its appendages, shows the sexual 

 difference characteristic of Campodea. In the fnnalc (fig. 135) the hinder 

 edge of the sternum is furnished with a row of simple bristles, while the 

 styht (fig. 147) carries long bristles from its base onwards and a few spinose 

 papillae at the tip. It is apparently relatively longer and less blunt than in 

 Silvestri's species ('99, pi. 7, fig. 12). In the onalc (fig. 153), the stylet is 

 relatively short and thick, with a cluster of spinose papillae at the tip, while 

 the edge of the sternum bears several rows of spines, those of the two hind- 

 most on prominent glandular papillae. The stylets on the succeeding six 

 abdominal segments (fig. 148) bear each two strong spines at the extremity. 

 Silvestri's description and figure ('99, p. 393, pi. 7, fig. 14) indicate these 

 stylets merely as " setosi " in the species that he discovered in South 

 America. 



The exsertile vesicles are conspicuous on the abdominal segments from the 

 second to the seventh, inclusive (fig. 135). When thrust out they exhibit a 



