694 PROCEEDINGS OF THE NATIONAL MUSEUM. 



parts of the posterior subsegments; the head, legs, aud autennoe lighter; 

 the cariiiii; pale, perhaps white or yellow in life. 



Length, 15inm. ; width, 3.4 nun.; withont carina', 2.3 nun.; length of 

 antenna', 3.3 nun.; of leg, 3.8 inni. 



Locality. — A single male specimen, collected by Neninann at Ravi- 

 rondo, German East Africa, April, 1894, is in the Berlin Mnseuni. It 

 was taken from the same bottle with the types of Ifarmodcmnm miens 

 and Sphcnodcsnins rngiilosiifi, which indicates that a large Goni[)lio- 

 desmid fauna may be exi)ected from that region. 



NEODESMUS, new genus. 



Body rather small, about five times as long as broad; dorsuiu rather 

 strongly conxex, the rather narrow carina* sloping nearly in the direc- 

 tion of the dorsal arch. 



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

 four following, which are subecjual with the sixth, scarcely exceeding 

 the others; closely similar to those of 8phenodes7nus, but the olfactory 

 cones four. 



First segment subreniform, somewhat more than twice as long as 

 broad, not strongly narrowed (shortened) laterad, but evenly rounded; 

 posteriorly broadly emarginate. 



iSegments dorsally evenly convex, distinctly rugulose. 



Lateral carinas with marginal callus prominent, continuous in front, 

 scarcely so behind; calli of anterior segments narrow, distinct; that 

 of tirst segment passes gradually into the raised margins; posterior 

 carinas rather slightly and broadly produced, as in iSphc nodes tn us and 

 Ulodesmiis. 



lvei)ugnatorial pores 13 (or 12?), located in distinct excavations some- 

 what behind the middle of posterior subsegments. 



Preanal seal© broadly triangular, the apex distinct and sharp; setif- 

 erous tubercles distinct, j)rominent ventrnd, but not jjrojecting caudad 

 as far as the apex. 



Sterini of male without transverse ridges. 



Sternum of segment 6 of male, witli a stout, subtriangular i)rocess. 



Sternum of segment 16 without a process. 



Legs of male slightly crassate; dorsal face of second Joint moder- 

 ately in Hated. 



Anterior male legs with the tleshy sole well developed; claw dis- 

 tinctly 1 educed. 



Coxa' of second male legs with a broad, subcouic ventral prominence, 

 a seminal opening in its flattened ventral i)osterior face. 



Copulatory legs with second Joint subbulbous aiul trigonal at base, 

 then moderately compressed and flexed, as usual in this subfamily; the 

 nodus is narrowed at base, and, viewed from the side, is deeply notched, 

 the sinus rounded and the lobes connivent; in addition there is a 

 strong spine directed mesad; a single large spine rises from the base 



