Genera and Species of Millipedes. 435 



tlie licad to the base of the last segment ; sterna and bases 

 of k'gs pale ; antenna; and legs ochraceo-fuscous. 



Antenna' long, as wide as the third segment, less than the 

 ninth by half tlie width of the keel. 



Dorsal surface finely granular or coriaceous, the tubercles 

 not very distinct ; keels large and nearly horizontal, with 

 anterior and posterior borders finely serrulate and lateral 

 margin almost entire; only finely sinuous on the posterior 

 keels ; anterior angles strongly convex, anterior border also 

 convex, with rounded basal shoulder ; posterior border 

 angulate basally, lightly concave ; posterior angle acute, 

 shortly spinifurm ; pores about three diameters from the 

 edge. 



Caudal process very wide, rather strongly notched just 

 before its posterior angles ; the middle of its posterior surface 

 widely produced. 



Copulatory feet with the external prong directed downwards 

 and outwards, the lower or inner prong curved almost vertically 

 upwards and backwards. 



Measurements in millimetres. — Total length 5-i ; width of 

 second segment 7"8, of fiftli 9'5. 



Loc. Singapore {H. N. Ridley). 



This species differs from the preceding in the presence of 

 a median dorsal yellow band, the small amount of yellow on 

 the keels, the greater distance of the pore from the margin, 

 its larger keels and longer antenna3. 



EuRYDiROEHACHis, gen. nov. 



Antennoi short, a trifle exceeding the width of the first 

 tergite. 



Body very wide in front, owing to the large size of the 

 anterior keels, which resemble in shape and approximately 

 in size those of the rest of the body, the second segment being 

 as wide across as the seventeenth or sixteenth ; first tergite 

 with its angles not produced forwards, but widest just behind 

 the anterior border. 



Tergites coarsely granular, tubercles distinct ; keels with 

 anterior and posterior borders finely serrulate ; lateral margin 

 lobulate, fluted, the pore remote from it ; anterior border 

 basally shouldered, angle rounded, posterior angle square or 

 acutCj but not spiniform ; from the fifteenth segment the keels 

 project posteriorly beyond the level of the posterior border 

 of the tergite. 



Caudal process very wide, widest at its posterior angles. 



Sterna with four short spines directed posteriorly. 



