NOTES ON MILLIPEDES. 13 



Colour (from life), drawn up from many Bangkok specimens. 

 Head red, except forehead between the eyes which is brown. 

 First segment (behind head), brown, anterior border red, pos- 

 terior border pale reddish brown. Remaining segments brown, 

 posterior border very pale brown, reddish on the back, yel- 

 lowish at the sides, underneath (about bases of legs) pale 

 yellow. Tail (i.e., last segment) red, shading to brown at the 

 sides. Antennae, mouth and legs, red. The red of the head, 

 legs, etc., is a rich brick red. The brown of the body is a dark 

 brown, dull in some lights, in others more grey than brown with 

 distinct purple shades in it. In spirits the whole colouring 

 becomes darker and less conspicuous. At any rate, in some 

 cases the males are more purplish-grey in colour, and the females 

 (who are also larger) are more reddish-brown. 



U. Trigoniulus sp. The blue-green and red Trigoniulus. 



Of this very beautiful species, apparently undescribed bul 

 allied to T. caudulanus of Karsch, I got three specimens in the 

 jungle south of Tahkamen, >Siam, on the 10th March 1897. 

 The number of segments varied from 48 to 52, and the largest 

 individual was G4 mm. in length. 



Colour (from life). Upper surfaces and sides pale bluish 

 bottle green, each segment with a broad, distinct, black trans- 

 verse band ; along each side is a very narrow black line 

 enlarged into a black spot on each segment ; from the eighth 

 segment to the penultimate one the back is bright brick-red; 

 this red line is narrow anteriorly and gets broadest about the 

 middle of the back. The head between the eyes is darkish 

 French grey ; the remainder of the head, anterior border of the 

 segment next behind the head, the whole of the legs, and the last 

 segment and tail are bright brick-red, the lower surface of the 

 body (between the legs) is yellowish-red. 



Genus Spiroholellus. 



Labral peres I -f- 1 . First dorsal plate very large, expanded 

 laterally. 



15. Spiroholellus sp. The white-legged Millipede, 



This elegant, elongated Millipede, with its conspicuous little 

 white legs, is one of the most active members of the Class. 



