NO. 1170. THE FAMILY GOMrUODESMIDJi— COOK. 697 



acnte on segments 16 to 19; ventral surface between segments G and 7 

 with a prominent triangular lamina. 



liepugnatorial pores rather dorsal than lateral, placed a little behiud 

 the middle of the carina. 



Last segment prolonged, apex truncate, transversely impressed near 

 the apex; setai few. 



Anal valves margined, with two pairs of set*. Preanal scale large, 

 simple, or indistinctly trifid, the median lacinia far the longest; setig- 

 erous tubercles 2. 



Legs of pairs 1 to 6 with a pulvillus on the last joint; a triangular 

 prominent lamina between segments and 7. 



Legs sliorter than the breadth of the body, 5 mm. 



Copulatoiy legs much protruding, spiral, setose, the external margin 

 bidentate, with a lacinia near the inflexed apex. 



Color of alcoholic specimens testaceous. 



Length, 34 mm.; breadth, 0.5 mm. 



Locality. — Caftraria. Known only from Porat's description. 



The generic position of this species is still in doubt. On the dis- 

 covery of Neodesmus it appeared that caffrarius miglit be related by 

 reason of the spiral copulatory legs, but Porat distinctly says tluit the 

 process of the sixth segment is triangular. As the copulatory legs are 

 large and protruding, and there seems to be greater similarity in size 

 as well as distribution, it seems best now to place this si^ecies next to 

 N.juvems^v'dihev than leave it under SphenodeHmuH, where it would be 

 less likely to be sought if determination were attempted by means of 

 the synopsis of genera. 



Genus TYCODESMUS Cook. 

 Tycodesmua Cook, Pn.c. U. S. Nat. Mns., 1895, XVIII, p. 83. 



Body rather large, about five times as long as broad; dorsum moder- 

 ately convex, the carinas somewhat horizontal. 



Anteniiic filiform, second joint longest, four following subequal, suc- 

 cessively slightly shorter distad; olfactory cones 4. 



First segment about three times as broad as long; anterior margin 

 subtransverse; the posterior turned forward laterally so that the cari- 

 nas are narrower than the median i)ortioii. 



Segments dorsally smooth and shining, somewhat uneven laterad and 

 with traces of transverse rows of granules on the posterior segments. 



Lateral carina; witli thickened margins well developed and continued 

 upon the anterior edge of the carin.e, scarcely upon the posterior, those 

 of the anterior as broad as the others; posterior corners moderately 

 produced. 



llepugnatorial pores 13, located in distinct depressions. 



Preanal scale triangular, pointed, setiferous tubercles distinct, small, 

 close to the apex and not exceeding it. 



