hanskn: on six species ok koenenia. 227 



large sternum lias only three hairs arranged in a transverse row 



(fig- 3 0- 



Chela (tig. r c). Each finger with eight well developed 

 spines and a rudimentary one. The distal spine is slightly larger 

 than the following, and a number of the spines have an acces- 

 sory very small apex on the proximal margin. 



Palpi (fig. 3 e). They are robust and proportionately short. 

 The tibia is only slightly more than twice as long as thick. The 

 second metatarsal joint is somewhat longer than the first and 

 conspicuously shorter than thick; the first tarsal joint is somewhat 

 shorter than the second, and the third joint is much longer than 

 the first and the second together. 



J.egs. They are robust and proportionately short. The 

 first pair (fig. 3 f) has the tibia scarcely twice as long as thick; 

 the third metatarsal joint is slightly longer than the fourth, with 

 its stift" seta (s) inserted near the base; the last tarsal joint is 

 scarcely three and a half times longer than thick. — The last 

 pair of legs (fig. 3 h) has the metatarsus (m) scarcely longer than 

 the last tarsal joint; its sensory seta (s), which is exceedingly 

 long, is inserted near to the base and reaches almost to the 

 middle of the last tarsal joint; the first tarsal joint is about one 

 fourth shorter than the second. 



Abdomen. It is more elongate and narrower than in any 

 of the other species, and some specimens are more slender than 

 that exhibited in fig. i a. Ventral sacs are wanting. The ventral 

 side of the fifth and sixth segments (fig. i d) has two pairs of 

 rather long and two sublateral pairs of short hairs; the two setae 

 on either side of the middle line being separated from each other 

 by less than twice the distance between each and the seta next 

 , to it on the outer side. The fourth segment has two pairs of 

 short sublateral hairs but only one pair of longer hairs, and the 

 distance between the longer hairs is longer than between the 

 inner pair, but shorter than between the outer pair on the fifth 

 segment. — The three posterior segments have a seta in the me- 

 dian line; the last segment has ten setae. 



Flagellum (fig. i e). Only five joints are preserved in a 

 single specimen. They are shorter and much thicker than in 

 any of the preceding species. The basal joint is slightly longer 



35 



