ACERAIUS. 261 



the metastemuni, are broadly and densely punctured and hairy. 

 The abdomen ig very smooth. 



Len(jfh, 38 to .50 mm. ; hreadt/i, 14 to 19 mm. 



Darjeeling Distr. : Man^iu {E. T. Atkinson) ; Pcdong 

 {A. Desyodins). Assam : Patkai Hills (IF. Doh(jty) ; Moudon, 

 Mishmi Hills {Mis.s M. Steele). Burma : Mali Hka Valley, 

 Kachin Hills, 1000 to 2500ft. (F. Kingdon Ward, Dec.); 

 Sin Lum, Bhamo, 6000 ft. (T. Selkirk). Tonkin. Malay 

 Peninsfla. Stmatra. Borneo. Java. Formosa. 



Type in the Halle ^Fuseum. 



This is a very common species, found in large communities 

 and said to bore in tough wood. 



159. Aceraius helferi. 



Aceniix.^ lu-lfcri Kiiw., Deutsche Ent. Zeits. 1891, p. 163 



Gravely, .Slem. Ind. :\Ius. vii. litlS, p. 89. 

 A. tavoyanus Gravely, Mem. lad. Mus. iii, 1914, p. 237. 

 A. himalayensis Gravely, op. cit. p. 236. 



Fairly large, with the sides of the eh-tra and metasternum 

 and the upper surface of the middle tibia thickly clothed with 

 hair. The head is strong!}' pimcturcd, the punctures bearing 

 short erect setfe. The supraorbital ridges are sharp and end 

 anteriorly in minute sharp jioints, without reaching the front 

 margin. The inner marginal processes are strongly protluced, 

 that on the right sharph^ triangular, that on the left long, 

 parallel-sided, inclined inwards and obliquely truncate at the 

 end. The median elevation is sharj) but not strong, and the 

 frontal ridges are not strongly divergent. The pronotum is 

 very smooth, without median groove and with only a few 

 scatteretl punctures at the sides, except in the lateral scars. 

 The elytra are deeply striate, the strise not ])unctured, the three 

 outermost intervals densely ])unctured and liairy in their anter- 

 ior part, the ninth interval is entirely punctured, and the 

 seventh bears scattei-ed punctures. The sides of the meta- 

 sternum are broad and densely punctured and thickly hairy, and 

 the abdomen is very smooth. 



Length, 33 to 40 mm. ; breadth, 12 to 15 mm. 



SiKKiM : Cheung Tong {H. J. Walton). Darjeeling 

 Distr. : Pedong (A. Desgodins). Assam : Lohit Valley, 

 Mishmi Hills, 1000 to 3000 ft. (F. Kingdon Ward and R. J. 

 Kaulback, March). Burma : Kul)y Mmes (IF. Doherty) ; 

 Cheba, Karen Hills, 3600 to 4000 ft. [L. Fea, Jan.) ; Sm Lum, 

 Bhamo, 6000 ft. {T. Selkirk). Tonkin. Siam. Malay 

 Peninsula. 



Type in M. Rene Oberthiir's collection ; those of tavoyanus 

 and himalayensis in the Indian IMuseum, Calcutta. 



