Myriapoda of West Africa. ' 25 



1. Paradesiiiiis tliysaiiopus^ sp. n. 



Plate I, figs. 1-6. 



Body rather slender, slightly flattened, narrowed slightly and gradually 

 anteriorly, more abruptly posteriorly. 



Vertex smooth, sulc-us beginning as a fine line at the posterior margin, and 

 gradually widening and deepening to just below the antennae, where it ends ; 

 near the lateral edge of the antennal opening a small, well-defined, circular 

 surface, apparently not chitinized. 



Clypeus short, smooth above, wrinkled and hirsute below, the lower bristles 

 longer, and arranged in more or less regular transverse rows ; a shallow trans- 

 verse furrow above the labrum. 



Labrum very short, the emargination moderate or shallow, with three small, 

 more or less blunt teeth, sometimes separated from each other. 



Antennse 6 or 7 mm. long ; second joint longest, but the third subequal to it ; 

 the other three distally decreasing, though but very slightly ; seventh sub- 

 equal to the first ; distal joints densely pilose, the others slightly. 



Mandibulary stipe with the exposed surface (buccal area) large, triangular, 

 anteriorly truncate, sparsely hirsute, marked with three furrows arranged in 

 the form of a right triangle, with the right angle toward the clypeus. 



Masticatory plate crescent-shaped, crossed by seven transverse, spine-bear- 

 ing ridges. 



Masticatory cushion and a fringed lamella along the masticatory plate well 

 developed, the projections black. 



Mandibulary tooth triangular, rounded at apex. 



Dentate lamella with four blunt teeth. 



Pectinate lamellae six, as is usual in this family, but all the lamellae may 

 not be complete, that is, there may be five lamellae, one being branched. 



Mentum triangular, of equal length and breadth, the posterior edge deeply 

 and broadly emarginate, the apex very acute ; a few short bristles along the 

 median line. 



Stipe of gnathochilarium with broad, produced anterior corners ; with long 

 bristles on the anterior margin, and with short ones over its whole surface, 

 excepting along the lateral margins. 



Lingual laminae hirsute over the entire surface, the anterior bristles longer. 



First segment smooth, anterior edge curved, the posterior nearly straight, so 

 tliat the general outline is that of half of an ellipse divided by the long axis. 



Second segment very convex and smooth above, of about equal length, i but 

 broader than the first ; upper carina slightly produced at the anterior angle, 

 more at the posterior, with a raised margin above. 



Third and fourth segments each about as long as the second, but the carinae 

 smaller, the anterior angle wanting, the posterior better developed than upon 

 the second segment. 



^ The terms long and short refer to dimensions taken in the general direc- 

 tion of the long axis of the body ; broad and narrow to those more or less 

 perpendicular to the long axis. 



