320 



MR. E. I. POCOCK ON MYMOPODA 



MYEIOPODA DIPLOPODA. 



Earn . POLTDESMIDiE. 



Steongylosoma setosum, sp. n. j 



Colour (in alcohol) uniform testaceoiis throughout. 



(Head and anterior 4 somites missing.) The keel-bearing 

 portion of the rest of the somites thickly beset above and at the 

 sides with long setae, which project in all directions, and distinctly 

 covered with squamiform granules. The transverse sulcus distinct. 

 The keels small and slender, but distinct, situated in about the 

 middle of the side, as long as the part | of the tergite that bears 

 them, their anterior angle nearly rectangular, the posterior acute 

 and spiniform, the lateral edge armed with from 3 to 5 distinct 

 sharp teeth. Anal tergite, sternite, and valves of normal form ; 

 the tergite stout, distally narrowed, tZ-uncate, the sternite pos- 

 teriorly convex, the tubercles small. The sterna transversely and 

 longitudinally grooved, not spined. | 



Copulatory feet long and slender, formed almost as in Para- 

 dermus coarctatus, the third segment long and cylindrical, and 

 terminating distally with two slender curved processes which are 

 closely applied together. | 



Length of specimen 19 millim. (wheu complete probably about 

 24 millim.). 



Sah. Mergui. A single example from Owen's Island. 



In spite of its damaged state, I have p.o hesitation in describing 

 this specimen as the representative ;of a new species. It is 

 entirely peculiar in its hairiness and iu its dentate keels. 



common :- 

 ilate ridge 



frontal sulcus 



The following new species of Spirostreptus are closely allied to 

 S. opinatus and 8. aterrimus, which Pr. Anderson obtained at 

 Mergui. 



They have the following features ir 



Head smooth, Avith a superior crei 

 conspicuous, and extending to a poiit in a line with the inner 

 angles of the eyes. Eyes separated qy a distance that is greater 

 than a diameter. 



Antenna with the second segment the longest. Th.Q first ter- 

 gite smooth, extending laterally and jnferiorly below the level of 

 the second ; the rest of the tergitefe marked with a complete 



