FAMILY PASSALIDAE 67 



LEPTAULAX. 



Leptaulax darjeelingi, Knw. 



REFERENCE. Knw. Nov. Zool. v, p. 298 (1898). 



Habitat. Darrang, Goalpara, Assam. Also reported from Mungphu ; 

 Tenasserim. 



Trees Attacked. India-rubber (Ficus elastica) : Charduar Rubber Plan- 

 tations, Darrang: Sal (Shorea robusta}, Semu\(Bombaxmalabaricum'): Goalpara. 



Beetle. Moderate size, black, shining. Head flat, dorsal surface elevated in a number of 

 prominent irregular pointed tubercles ; mandibles prominent, ending in two teeth. Protho- 



rax square, convex, shining, a rather deep median longitudinal 



Description. depressed line not reaching to anterior or posterior edges ; a circular 



punctate depression in the outer anterior angles ; the lateral edge 



punctate. Elytra bluntly constricted apically, striate-punctate, the outer striae and punctures 

 most prominent. Under-surface brown, shining, the sides of abdomen punctured. Length, 

 2cTmm. to 28 mm. 



I took a number of these beetles from the interior of a 

 felled dead stem of a rubber-tree in the 



Life History. Charduar Rubber Plantation on 8 April 

 1906. 



The larvae were feeding in the soft decaying wood, and 

 the beetles, which were fully mature, were apparently oviposit- 

 ing in the wood beneath the bark. 



A few weeks later Mr. W. F. Perree and myself took 

 numerous specimens of this beetle in the dead tops of large F IG . . 

 felled trees, in the Goalpara Sal Forests, in April and May. lax 



\T /"* 1 



Subsequently we took numbers in a decaying fallen semul- ^"sam 

 tree of great size, in the Kochugaon forests. 



Mr. Perree was under the impression that he had taken the beetle in sal 

 wood amongst piles of sleepers, but at present this surmise has not been 

 substantiated. 



LEPTAULACIDES. 



Leptaulacides roepstorffi, Knw. 

 REFERENCE. Knw. Nov. Zool. v, p. 288 (1898). 



Habitat. Andaman Islands. 



Tree Attacked. Species unknown. 



Beetle. Small. Reddish-brown, shining, prothorax darker. Head set with corn 

 imbrications. Prothorax Hat, very shining, anterior edge concave, posterior convex, a median 



longitudinal depressed line and a sin. ill depressed pit on lateral 

 Description. margin one-third up from posterior ed;^c. Klytra conjointly r. di- 

 stricted apically, striate, the interstrial spare-. Hat and shining. Under- 

 surface brown, shining. Length, 15 mm. to 19 mm. 



This beetle is reported to be common beneath tin- bark of rotting tree- 

 stems in the Andaman Islands. No information is at present availabl- 

 to the species of tree it infests or as to the habits of the insect. 



i j 



