16 NOTES ON MILLIPEDES. 



base of the antennae. The whole Millipede is still sparsely clad 

 with hair, but the hairs are less numerous and much shorter in 

 proportion to the bulk of the animal than in the 2 mm. stage. 

 When the Millipede is about 18 mm. in length all the upper- 

 surface is a rich dark-reddish brown, the sides are a paler reddish 

 brown, and the underneath, legs, antennae, tail and lateral 

 processes are bright yellow. The whole animal looks neat 

 and glossy, there are scarcely any hairs on the body except a 

 few large ones under the tail, and many very short, fine hairs 

 on the head, antennae and legs ; and it is at this period that the 

 body becomes slightly depressed. 



I observed this species in copula in Bangkok in May 1897, 

 the males seem rather smaller than the females when they clasp 

 by the forepart of the body, and suffer themselves to be dragged 

 along. 



23. Orthomorpha Vicaria, Karsch. 



I found large numbers of this species on the walls of the 

 Government Rest House, Kuala Kangsa, Perak, 10th Dec. 1896. 



24. Orthomorpha cntcifera, Pocock. 



This species known from the Mergui Archipelago pro- 

 bably also occurs in Penang ; I have collected Millipedes, 

 apparently referable to it, on rocks near " the Crag," 2263 

 feet elevation above sea, in March and November 1896. 

 Specimens reached a length of 33 mm. (1^ inches); and their 

 colour in life was, upper parts reddish brown, with dark brown 

 centre line, and narrow transverse dark brown lines, three on 

 each somite, one being central and two marginal. The lateral 

 processes are rich very dark brown, their backward projecting 

 spines being yellow. Sides of body very dark brown, under- 

 neath of body buff. Legs yellow. 



25. Orthomorpha gracilis. 



I got one specimen at Ayuthia ; February 1888. 



Other specimens, some probably representing other species 

 of Orthomorpha, I have collected at Chantaboon, Tahkamen and 

 in the Larut Hills of Perak up to 4000 feet elevation, but the 

 most noticeable was a black and scarlet form I found in the 

 jungle nearMuok Lek, Dong Phya Phai, Siam, in November 1897 



