20 NOTES ON MILLIPEDES. 



qiently in March 1898 obtained a third specimen at the same 

 place. They are exceedingly active, running- so fast that unless 

 you know them by sight it is hard to tell what sort of animals 

 they are ; if found at rest they may be picked up with a pair 

 of forceps or else made to walk into a wide-necked cyanide- 

 of. -potassium bottle, but if first frightened all you will probably 

 see of them is a glimpse of (apparently) a spider with an impro- 

 per number of very attenuated legs disappearing round the 

 corner. It is very difficult to secure a perfect specimen, as 

 when caught they seem to shed their legs voluntarily, almost as 

 if to spite the collector. 



District. Burma and Penang. 



3. Scutigera marmorea, Poc. The Marbled Shield-Bearer. 



Localities. On the 14th March 189G I caught one specimen 

 under the bark of a tree at " Richmond," Penang Hill, elevation 

 about 2300 feet; its general colour was reddish-brown. In 

 March 1898 I got another specimen also on Penang Hill at 

 nearly the same height above sea- level. 



District. Burma and Penang. 



Sub-class A rtiostigma. 



1st Order, LlTHOBIOMOEPHA. 15 pairs of legs. 



Contains only the Family Lithobiidce. Species of Lithobius 

 are known to occur in Java, Sumatra, Burmah and possibly the 

 Nicobar Islands, so will probably be eventually found in the 

 Malay Peninsula ; the largest of the known S. E. Asian forms is 

 only V2\ mm. long. 



2nd Order, SCOLOPENDEOMOEPHA. 21 or 23 pairs of legs. 



Eyes, either absent or consist of 4 ocelli on each side of 

 the head. 



Antennae, 17 to 29 segments. 



Divided into several families. 



The usual centipedes met with in Malaya and Siam all come 

 into the family Scolopendridce, which have 21 pairs of legs, 4 eyes 

 on each side of head, and reach nearly a foot (305 mm.) in 

 leno-th. 



