THE GENERA AND SPECIES OF SYMPHYLA, 35 



Avliorl. The setfe in tlie central Avliorl of nearly all joints are 

 long, slightly shorter below than above. The terminal joint 

 (fig. 2 h) with a large and long- stalked striped organ inserted 

 on a conspicuous protuberance^ and besides a small and very 

 short-stalked similar organ. 



Scuta, — The second scutum (fig. 2d) with the posterior 

 7iiargin slightly convex ; its antero-lateral sette considerably 

 longer than the breadth of the proximal antennal joints, and 

 directed at least a little forwards; two pairs of lateral setfe 

 ai'e longer than the others, but scarcely more than half as long 

 as the antero-lateral setce, and directed essentially backwards. 

 The first, third, fifth, sixth, and eighth scuta, each with the 

 antero-lateral setfe and two pairs of lateral setfe about of the 

 same length and direction as the corresponding seta3 on the 

 second scutum ; a long and outward-directed pair of antero- 

 lateral setae are wanting in the fourth, seventh, and ninth, and 

 following scuta, while they possess a pair of rather long lateral 

 or postero-lateral setfe directed backwards. The penultimate 

 scutum is posteriorly conspicuously emarginate, with broadly 

 rounded lobes (fig. 2 e). 



Legs. — The last pair (fig. 2/) with the tarsus slender, 

 nearly five times longer than deep ; the metatarsus with five 

 or six, the tarsus with seven setfe in the anterior dorsal row ; 

 the setfe gradually increase somewhat in length on each of 

 these joints from the base towards the end, and the longest 

 of them, the distal seta on the metatarsus, is about half as 

 long as the depth of the metatarsus ; none of the joints with 

 any rather long seta. The anterior claw (fig. 2 g) is very 

 long, originating from the circumstance that its distal more 

 slender part is strongly elongate ; it is, besides, moderately 

 curved, while the other claw is considerably curved, very 

 slender, but only three fifths as long as the anterior one; the 

 front seta is rather weak. The exopod is slightly shorter than 

 the depth of the metatarsus. The first pair of legs (fig. 2 li) 

 with the anterior claw elongate, slender, and somewhat 

 curved (fig. 2 i) ; the other claw is very slender, short, at 

 most scarcely reaching the middle of the long claw, and often 



