1899.] BATKACHIAI^^S OF THE MALAY PBDiflKSTIlA A^Ti SIAM. 915 



I have come acroi5s the following specimens : — 



r iji. Number of Approximate length 



circular folds. in millimetres. 



(i) Bangkok 356 350 



(ii) „ (Feb. 1898) 320 304 



(iii)* „ 294 294 



(iv)* „ 312 282 



(v)* „ 305 180 



(vi)* „ 308 136 



(vii) Ayutbia (June 1897) 



(viii) Cbantaboon 332 304 



(ix)* Penang, 1800 ft. 



S* " I (April 1898) 



i 



311 297 



285 290 



317 287 



313 196 



(xi) 

 (xii) * 



(xiii)* „ (March 1898) 298 188 



(xi7) * „ (April 1898). 294 174 



The counted number of circular folds must always be more 

 or less approximate, as they are not all complete rings, some 

 bifurcating in places ; but this table shows how very much they 

 vary in number in individuals regax'dless of the length. 



Mr. Wray has shown me a specimen obtained by him in the 

 Larut Hills, Perak, at between yOOO and -iOOO feet elevation, and 

 Mr. A. (t. B. Van Sommeren had in his collection one from the 

 Penang Hills from about 2200 feet. Dr. Hanitsch (Eep. Eaffl. 

 Libr. & Mus. 1898, p. 5) records specimens from Ipoh, Kinta 

 district of Perak, caught November 1897, and from G-unong Panti, 

 Johore, caught June 1898. 



Habits. In life the tentacles are constantly being protruded and 

 retracted, and the throat is in constant motion, like a frog's. These 

 creatures are gentle and make no attempt to bite; although their 

 usual movements are very slow and deliberate, when thev want to 

 they can wriggle away with surprising speed. They do not feel 

 at all slimy when handled. 



These remarks apply equally well to /. monochrous. 

 Dolour ({to. life). Very dark rich purple, each circular fold showing 

 as a narrow paler ring. Along each side of the body a bright 

 lemon-yellow line, very distinct and sharply defined at the edges, 

 but varying very much in width in specimens of about equal length. 

 The eyes, though so small, are bright ; they are black, with a 

 very narrow pale brown ring round them. The tentacles are 

 white. 



Distribution. Mountains of Ceylon, Malabar, Eastern Himalayas, 

 Khiisi Hills, Burma, Siam, Malay Peninsula, Sumatra, Mentawei 

 Islands, Borneo, Java. 



* In the ten specimens marked with an asterisk the tentacle is considerably 

 nearer the eye than the nostril ; of its position in the remaining specimens I 

 find I have made no note. 



