No.n70. THE FAMILY GOMPnODESMIDM—COOK. 685 



Postgenital legs of males with coarse, rounded, cliitinous tubercles ou 

 the inner face of the ai)ical joint; smaller tubercles also on the sub- 

 apical joint. 



Male genitalia simple, the basal joint very small, almost hidden under 

 the expanded reniform base of the apical, which is densely hirsute ou 

 its median face, and has some especially long bristles at the base of the 

 ungual portion. This last is bifid nearly half its length, the divisions 

 sube(|ual, one strongly falcate, the other oblique aud less falcate. 



Color in alcohol a faded light brown, the carina', aud ends of the 

 anterior segments whitish. The posterior median part of each seg- 

 ment is lighter than the rest, except the carina;, and the anterior part 

 of the animal is lighter than the posterior. Legs and autennse also 

 light brown. 



Length, 24 mm.; width, <> mm. 



Locality. — Tana River, East Africa. 



Type. — One mature male in the U. S. National Museum collection. 



Genus HARMODESMUS Cook. 

 Harmodesmus Cook, Proc. U. S. Nat. Mus., 1895, XVIII, ji, 83. 



Body small, about four times as long as broad, oblong; dorsum 

 moderately convex, the cariuie somewhat horizontal. 



Antenna; filiform, rather slender; joints 2 to G equal; olfactory 

 cones 4. 



First segment three times as broad as long, subelliptic, nearly sym- 

 metrical; the anterior and i)osterior margins converging laterad so tliat 

 the carinic are evenly rounded. 



Segments dorsally smooth and shining, distinctly rugulose laterad. 



Lateral carime inserted about halfway up, in width e(]ual to about 

 one-third the body cavity; the marginal callus distinct, moderately 

 broad and prominent; on anterior cariufc the callus is narrowed; on 

 the first it is short and passes very gradually into the raised margin; 

 posterior corners of carina' rather slightly produced, those of the i)Os- 

 terior segments not narrowed and dentiform as in some of the larger 

 genera. 



Kepugnatorial pores 13, facing dorso laterad and located in distinct 

 excavations. 



Preanal scale subsemicircular, scarcely apiculate; setiferous tuber- 

 cles distinct, projecting slightly beyond the posterior margin but not 

 exceeding the apex. 



Sterna without transverse ridges. 



Sternum of segment 5, with a distinct, narrowly conic process at the 

 base of each leg of the fifth pair. 



Sternum of segment 6 with larger similarly located subconic proc- 

 esses whose apices are turned obliquely laterad and cephalad. 



Sternum of fifteenth segment unmodified. 



