360 



b l . Keels considerably larger (as in Paradesmus of authors). 



a 9 . Without trace of a crest above the legs on the segments 

 following the 4 th ; groove on the keel-bearing part of the 

 segment weaker, failing on the 18 th segment . atro-roseum. 

 ô 9 . Distinct indications of a crest above the legs on the anterior 

 segments of the body; groove in question stronger and 

 visible on the 18 th segment. 

 a'°. Tail slender parallel-sided, the keels and tail with more 



flavous colour conspicuum. 



ô 10 . Tail much wider at the base than distally ; tail and keels 

 less flavous 



a 11 . — of large size (35 mm.), groove on keel-bearing part 

 of segments and the one between the two halves 

 of the segment not conspicuously sculptured .... 



weberi. 



b 11 . — of small size (20 mm.), grooves in question with 



conspicuous beaded sculpturing coarctatum. 



54. Strongylosoma subalbum sp. n. 



Sumatra: Paningahan. 



Colour; head deep brown above, paler below; antennae brown, pale 

 at the base ; dorsal surface brown , paler in the middle , deeper at the 

 sides, keels deep brown; lateral surface deep brown above, nearly 

 white above the legs; sterna and legs nearly white. 



Head smooth , shining and sulcate above ; hairy below. Antennce long. 



First tergite not carinate, very convex; second tergite with its 

 keel well developed, below the level of that of the third. The keels 

 of the rest almost obsolete , being represented mearely by a kind of large 

 tubercle, the somites are consequently nearly cylindrical. The trans- 

 verse groove well developed, straight, beginning on the fifth ; the groove 

 distinctly beaded. Dorsal and lateral surfaces smooth. The inferiol keels 

 entirely absent. Caudal process of normal form. Anal sternite wide, 

 convexly margined , the tubercles small. Legs and sterna of normal form. 



Length 15 mm.; width 1.5. 



55. Strongylosoma pygmœum sp. n. PL XXII, fig. 2 — 2 a . 



Java: Buitenzorg. 

 Colour; head brown above, pale on labral region; antennee brown; 



