28 Myriapoda of West Africa. 



Promentum without bristles, widest in the middle ; a distinct line of demar- 

 cation between the narrow, posterior, plane surface and the anterior concave 

 one. 



Stipe with broad base, a few bristles on the anterior margin and anterior 

 portion of lateral margin, one large spine near the anterior interior angle. 



Lingual laminfe with three short bristles near the posterior, and three long 

 ones near the anterior end. 



First segment finely rugulose and punctate ; corners scarcely produced, 

 nearly rectangular ; one complete, and two fine marginal striations. 



Subsequent segments with the anterior portions concentrically striate, on 

 the striations small pits at considerable distance from each other ; posterior 

 part of segment highly convex, so that the body appears slightly moniliate, 

 punctate, and finely rugulose ; sides smooth above, moderately striate below, 

 the striations more extensive on the anterior segments but not appearing above 

 the pores. 



Repugnatorial pores longitudinally elliptical, situated below the middle, 

 slightly nearer to the suture than to the posterior margin, suture strongly 

 sinuate in front of pore. 



Penultimate segment very short. 



Last segment long, posterior margin depressed, rounded, more rugulose 

 than the anterior portion, not covering the anal valves. 



Anal valves finely punctate, not much exceeding the last segment, not much 

 inflated, the margins rather thick, compressed, next to them a shallow, irregu- 

 lar furrow. 



Pre-anal scale about three times as broad as long, rounded. 



Color of alcoholic specimen a unifoi-m dark reddish-brown, the anterior and 

 inferior portions of the segments paler ; feet dark reddish. 



Length 95 mm. ; greatest diameter 7 mm. ; 57 segments. 



Habitat. — One female specimen (Ac. 23,272) is labeled "Free 

 Town, Sierra Leone." 



3. Spirostreptiis variabilis, sp. n. 



Plate II, figs. 11-14. 



Body cylindrical, gradually narrowed anterinrlv to the eighth or ninth seg- 

 ment, then increasing to the second and first ; last seven or eight segments 

 rather abruptly decreasing. 



Covered portion of epicranium finely striate longitudinally, anteriorly bor- 

 dered by a transverse sulcus, which may be straight or considerably curved 

 at the sides. 



Vertex smooth or rugulose, sometimes, in females, with one or more trans- 

 verse striations above ; median sulcus nearly obsolete, but the suture distinct, 

 ending in a transversely elliptical, deep foveola between the eyes, which are 

 connected by a transverse suture crossing the foveola. 



Clypeus in male faintly rugulose, appearing smooth, lAdianly and below 

 the line of the antennae is a large flat or depressed space ; in the female the 



