G26 Mr. S. Hirst on new Opiliones from 



Ve^itral surface. — A sliglit crest of granules is present on 

 both sides o£ the tiist and fourth coxk, and on the anterior 

 side of the second and tliird. 



Chelicera smootli and shining above, but its proximal 

 segment has a well-marked tooth near the bnse below. 



Palp. — Femur moderately stout and slightly swollen on 

 the inner side at the distal end. Patella stout, on the inner 

 side at the aj)ex it is produced into a stout short process. 

 Tibia also stout and rather short, but longer than the patella. 

 'J'arsus long and slender, the distal end a little stouter, 

 liowever, than the proximal ; it is about equal in length to 

 the patella + the tibia. 



Legs fairly long (see measurenienig) ; their femora, patellae, 

 and tibiffi are furnished with very minute granules, but the 

 metatarsi (except their proximal end) and the tarsi are quite 

 smooth. 



JShasuremenis in mm. — Total length 3'75 ; lengtli of first 

 leg (from base of femur) 8'75, of second 20'25, of third 9, of 

 fourth 14. 



Colour of body black ; posterior spines (sometimes all the 

 spines) of the dorsal surface paler at the apex. Chelicera 

 deep black. Palj) brownish, but its tarsus is sometimes 

 blackish. Coxpe of legs slightly darkened, the trochanters 

 pale, the remaining segments of the legs usually rather dark, 

 but the femur is sometimes very slightly lighter in colour 

 than the distal segments (in one specimen the legs are light 

 brown, only the tarsi being distinctly darkened) ; the tibia of 

 the second leg is not white at the apex as in S. galeatus, 

 Thor., but unicolorous. 



Material. — Four specimens, collected by Mr. S. Akiyama 

 at Fakond, Japan, during the month of June, 1910. 



Remarks. — At first 1 thought that the dorsal surface of this 

 species was closely granular, but whilst examining a specimen 

 (under electric light condensed by a bull's-eye condenser) I 

 noticed that the heat of the artificial light had turned many 

 of the granules white. On rubbing the surface softly witli a 

 blunt instrument many of them became detached and disclosed 

 the fact that it was minutely punctured beneath. The 

 granules of this species seem to consist of secreted matter. 



This new species has the chelicerte smooth and black, as in 

 S. quinquedeniatus, E. Sim., but seems to differ (judging 

 from Smion's description) from that species in the structure 

 of the ocular tubercle and in the presence of a median pro- 

 jection just in front of the anterior margin of the cephalo- 

 thorax. The ocular tubercle resembles somewhat that of 

 S. galeatus^ Thor., but the tibia of the second leg lacks the 



