692 PROCEEDINGS OF THE NATIONAL MUSEUM. volxxi. 



Length, about 20 mm.; width, 3.7 mm.; without carin£B, 2.8 mm.; 

 lenj'th of leg from tenth segment, about 3 mm. 



IjOcaUty. — Natal, Durbnn and Maritzburg; two male specimens col- 

 lected by Sclienck are in the IJerlin Museum. 



MYCHODESMUS, new genus. 



Body snnill, loss than five times as long as broad; dorsum moder- 

 ately convex, the proportionally rather broad carime tilted somewhat 

 horizontally. 



Antenna' filiform, rather robust; second Joint slightly longer than 

 the four following, which are subequal; olfactory coues four. 



First segment subreniform, less than three times as. broad as long, 

 the jjostcrior margin much more nearly transverse thiin the anterior, 

 VA'hich is laterally carried backward in a nearly even curve to the 

 rounded posterior corner. 



Segment dorsally evenly convex, sniootli in the middle, rugulose in 

 the margins. 



Lateral carina* with marginal callus of moderate width and promi- 

 nence, continuous with finely raised margin in front and behind; pore- 

 less carina' with callus much narrowed, those of the first segment very 

 narrow and passing insensibly into the raised margins; posterior 

 corners of carina' slightly produced, projecting only on a few posterior 

 segments, where they are broad and not dentiform. 



llepugnatorial pores 13, located in very distinct excavations and 

 facing nearly laterad. 



Preanal scale distinctly triangular and apiculate, the setiferous 

 tubercles small, much exceeded by the apex. 



Legs of mah^ slightly crassate, the first six with fleshy sole of last 

 joint very small, the claw scarcely reduced. 



Coxa* of se«ond male legs with a suboblique, broadly rounded 

 prominence. 



Sternum of segment G with a broad, subquadrate process which has 

 a deep, subrectangular notch in the middle. 



Sternum of segment 7 with rim of copulatory aperture not jiroduced. 



Sternum of segment 15 without a ])ro(;ess. 



Copulatory legs subtrigonal at the somewhat bulbous base of the 

 second joint, then strongly compressed and recurved in the usual 

 manner; the nodus is very large and irregular: tlie Hagellum is very 

 thick and bulbous at base and is rapidly narrowed into a short, slender 

 process which ends in two short, subequal, divergent prongs; thus the 

 whole apical part of the structure from the top of the curve at the base 

 of the nodus to the end of the fiagellum is shorter than the remaining 

 proximal i)ortion. The swollen nodus and base of the flagellum are 

 hollow, suggesting the possibility that the seminal fluid is stored there. 

 The usual spine on the mesial side of the base of the flagellum is 

 present, but very small. 



