On a new Genus of Lamellicorn Beetles. 317 



Plateau of Northern Shan States. Type from Gokteik, 

 2130', other specimens from Pyauriggaung, 2790', and 

 Mansam Falls, 2000'. 



Type. Adult female. B.M. no. 14. 7. 8. 48. Original 

 number 2756. Collected 22nd April, 1913, by G. C. Short- 

 ridge. Presented by the Bombay Natural History Society. 



A dark plateau representative of C. castaneus. The zygo- 

 mata are generally stronger than in true castaneus, but not 

 invariably so, and as the plumbeous coloration is also not 

 invariable, I have only distinguished this form as a subspecies, 

 in spite of the considerable difference in locality. 



3 b. Cannomys castaneus castaneus. 



Colour about as in badius, or rather brighter. Zygomata 

 slender. 



Tenasserim, Thaton (Davison, Blanford). Type-locality 

 said to be Arakan. 



4. Cannomys minor, Gray. 



Size variable. Teeth large. Colour chestnut or brownish. 



Hob. Siam. 



I am not at present able to come to any satisfactory con- 

 clusion about the Siamese bamboo-rats. Northern specimens, 

 from Chiengmai and Nan, can hardly be distinguished from 

 examples of C. badius, but they vary considerably among 

 themselves. The Museum collection contains specimens, in 

 addition, from Raheng {Barton) and Pechaburi (Mouhot), 

 besides the immature and much deteriorated type (B.M. 

 no. 79. 11. 21.526), which was obtained during the Finlayson 

 mission of 1821-2. 



XXXVIII. — Upon a Remarkable new Genus of Lamellicorn 

 Beetles from Borneo. By Gilbert J. Arrow. 



(Published by permission of tbe Trustees of the British Museum.) 



The rare and interesting insects forming the small group 

 Aclopinse have been known up to the present time only in 

 two widely separated parts of the world — the southern part 

 of South America and the northern part of Australia. 

 Remote as these regions are from one another, it is now fairly 

 well recognized that the strong points of resemblance in their 



