356 Mr. R. I- Pocock on Chilopoda and Diplopoda 



of the side, without any anterior angle, and the posterior 

 angle scarcely spinilbrm even quite at the hinder end of the 

 body, and not projecting beyond the posterior border of the 

 somites, rather deeply excavated for the pore ; those of the 

 second segment below the level of those of the first and third, 

 larger, with squared angles. The transverse sulcus extending 

 from the fifth to the eighteenth segment, not beaded, but the 

 furrow separating the anterior and posterior halves of the 

 segments finely beaded ; caudal process, anal sternite, and 

 sterna of the other segments normally formed. The lateral 

 surface of the segments smooth, the inferior keel practically 

 absent on the segments succeeding the fourth. 



Legs distinctly clawed ; femur nowhere twice as long as 

 the trochanter or tibia, sometimes only a little longer, and 

 barely twice the length of the patella. 



(^ . — Smaller and thinner than the female, with the keels a 

 little larger and a prominent process on the sternum of the 

 fifth segment. 



Tarsi of anterior legs more thickly hairy below. 



Copulaiory feet Yaiher short ] the iiagellum and its sheath 

 distinct almost from the base ; the sheath twisted on itself like 

 a corkscrew, and giving the appearance of being itself divided 

 into two branches and terminating in a divided apex. 



Length of female 20 millim., width across keels 2 ; of male 

 15-5, width 1-5. 



Loc. Great Loo-Choo (Hoist Coll.).'] 



Polydesmus Moorei, sp. n. (PL XI. fig. 4.) 



Colour fuscous on the middle of the dorsum, paler on the 

 keels, fuscous beneath the keels ; sternal surface flavous ; legs 

 flavous, with the distal segment fuscous ; antennas f usco-flavous, 

 the three distal segments fuscous. 



Antennce incrassate ; segments 1 and 2 about equal, third 

 more than twice the second and about twice the fourth ; fourth 

 to sixth gradually increasing in length and thickness, the 

 latter shorter than the third. 



Body nearly flat, smooth, polished, wide, not manifestly 

 narrowed in front or behind ; the first tergite distinctly sculp- 

 tured, wide, much wider than the head, with a distinct keel, 

 of which the anterior angle is rounded and the posterior 

 nearly squared. The rest of the segments with strong 

 sculpturing ; the keels very wide, those in the middle of 

 tiie body wider than long, nearly oblong anteriorly, the 

 posterior border of the fifth in approximately the same 

 straight line as the posterior border of the tergite ; the border 



