54 FBIODESMUS, A NEW DIPLOPOD FROM SURINAM— COOK. vol. xvm. 



Labrum slightly emarginate, with three distinct teeth. 



Aiitenure siibclavate, joints in order of length 2, 3, 4, 5 = 6, 1, 7, beset 

 •with piliferous grannies. 



JMaudibulary stipe with exposed surface granular, divided into the 

 usual hve areas. 



Ilypostoma strongly arcuate, deeply and broadly emarginate in front. 

 Cardo present, in situ perpendicular to the stipes. Mentum subtri- 

 angular, broader than long, pointed in front, very broadly emarginate 

 behind, densely granular-pilose. Stipes three times as long as broad, 

 granular-pilose, a deep sulcus near the lateral margin. Lingual laminje 

 three times as long as broad, granular-hirsute. Lingual and median 

 lobes distinct. 



First segment less than three times as broad as long (13:7); anterior 

 and posterior margins convex; posterior corners acute; lateral margins 

 dentate. The segment is subequal in width to the head, and distinctly 

 narrower and longer than the second segment. 



Segments with dorsal surface slightly convex, densely beset with 

 granules of two sizes, the smaller very numerous and without order, 

 the larger more or less evidently arranged in three transverse rows. 

 Fourth and subsequent segments with a distinct transverse furrow. 



Lateral carinse moderately broad, about one-fourth as wide as the 

 body cavity, inserted nearly on a level with the dorsum; margin thick- 

 ened and deeply excised into coarse teeth, longer on i)osterior segments 

 and directed caudad. 



Kepagnatorial pores of medium size, directed laterad, located on a 

 large capitate horizontal process rising from near the middle of the 

 carinte of segments 5, 7, 9, 10, 12, 13, 15-11). Below the carinas the seg- 

 ments are densely granular. Inferior carina interrupted, represented 

 by an anterior and a ijosterior dentate process, both large and distinct. 

 Anterior subsegments distinctly, though very minutely, granular. 



Supplementary margin rather long, irregularly striate longitudinally, 

 the free edge entire. 



Last segment as long as the preceding, with twelve setiferous tuber- 

 cles and four apical set;e. Eight of the setiferous tubercles are located 

 in the apical portion of the segment; the other two pairs on the sides 

 below the level of the carina^. 



Anal valves with moderately elevated, compressed margins and two 

 setigerous tubercles, the upper located on the margin, the lower con- 

 siderably removed from it. 



' Preanal scale triangular, pointed; two setigerous tubercles toward 

 the apex. 



Sterna sparsely and minutely granular, a very small conical spine at 

 the base of each leg (in the male only"?); spiracles large, the margins 

 tumid. Sterna of legs 3-0 of male, with a large conical spine at the 

 base of each leg. 



Legs of male slightly crassate; the ventral face of the third Joint 

 of legs 4-7 iniiated. 



