264 PROCEEDINGS OF THE ACADEMY OF [1896. 



ture, but constructed somewhat as in Oxydesmiis ; length 50 mm., 

 width 9 mm. ; locality, Kribi, German Colony of Kamerun ; a male 

 specimen collected by Morgen is in the Berlin Museum. 



Mimodesmus parallelus. 



Vertex and dorsal surface smooth or faintly coriaceous, with 

 neither granules, tubercles nor areas ; posterior subsegments without 

 a transverse furrow or depression ; pores situated in the outer slope 

 of the submarginal ridge, as in Oxydesmus ; last segment much as in 

 Oxydesmiis, but the tubercles obsolete ; anterior male legs distinctly 

 crassate ; copulatory legs long and twisted, apically recifrved against 

 the ventral surface of the segment ; color a dull brown, with the sub- 

 marginal ridges and a large spot in the middle of each posterior sub- 

 segment, yellowish ; length 46 mm., width 6.5 mm. ; locality, Kare- 

 wia, East Africa, Stuhlmann ; Berlin Museum. 



Plagiodesmus obliquus. 



Probably allied to and perhaps identical with Stenonia occidentalis 

 Karsch, described from Quango. Distinct from the species of 

 Oxydesmus by the very oblique submarginal ridges, which are wide 

 and not prominent about the pores ; copulatory legs long and some- 

 what twisted, not inserted under the edge of the aperture as in 

 Oxydesmus ; color dark vinous, nearly black ; length about 75 mm., 

 width 13 mm. ; locality, Congo Valley ; a few specimens in the 

 British Museum. 



Compsodesmus perlatus. 



Length about 20 mm., width 7.5 mm., without the carinae 2.3 

 mm. ; color dark brown, marked with transparent radiating lines as 

 in the other species of the present family ; copulatory legs distally 

 cupulate, the posterior rim produced caudad into a strong curved 

 spine ; locality, Kamerun hinterland ; a male specimen collected by 

 Zenker is in the Berlin Museum. 



Tanydesmus ordinatus. 



This genus is related to Lampodesmus and the allied Liberian 

 forms, as previously noted. Dorsal areas arranged in three distinct 

 transverse rows ; pores distinct, of the usual formula, near the ante- 

 rior edge of the carinre, remote from the lateral margin ; penultimate 

 segment subequal with the last, the sinus rather broad, the sides 

 distinctly diverging caudad ; color in alcohol uniform light reddish- 

 brown ; length of male 19 mm., width 4.5 mm, ; female 22 mm. by 

 5 mm. ; locality, Togo Colony ; several specimens in the Berlin 

 Museum. 



