FAMILY SCOLYTIDAE 



495 



This beetle infests the olive (Olea cuspidata) in North Baluchistan and 

 possibly neighbouring tracts. I found a living tree badly 

 Life History. infested by the insects on 9 November 1905, the females 

 being engaged in eating out elongate vertical egg- 

 galleries some two inches in length transversely across the tree instead of 

 parallel to the longitudinal axis as is the general rule of the Indian species 

 of the genus, and laying the eggs in small indentations on either side all the 

 way up. The larvae eat out wavy galleries some two and a half inches in 

 length, making the usual Sphaerotrypes pattern in the wood. I know nothing 

 further about the life history of this insect. 



Sphaerotrypes sp. 



Habitat. Salween River, Tenasserim. 



Tree Attacked. - Terniinalia toincntosn. Kowloon Island, Salween 

 River. 



Beetle. Smaller than .S'. swaHki'iisis. The beetles taken were in too poor a condition 

 to render the determination of the species possible. 



I took two individuals of this Sphaerotrypes from their egg-galleries in 

 the bark and sapwood on 9 March 1905. The knife 



Life History. unfortunately inadvertently cut through one of them, 

 and the other was in a poor state of preservation. They 

 were, however, easily identified as a species of Sphaerotrypes. 



The beetles taken 

 were dead mother beetles, 

 the generation arising 

 from the eggs laid by 

 them having left the 

 tree in all probability 

 during the previous 

 autumn. A generation of 

 the Xylotrcchu* of this 

 tree (see p. 353) was just 

 maturing and leaving 

 the tree, a large standing 

 nearly dead one. 



The egg-gallery of 

 this species of Sphaerotry- 

 pes is much shorter than 

 that of the .sr,v<?//Ar;/.sz'.s of 

 the sal, and fewer eggs 

 are laid. In the galleries 

 I examined only four to 



six larval galleries took K ."'". ^'' , Eggand larval tunnels ^i Sphaerotrypes sp- 

 -r f , c in the inner bark of Terminalia iomentosa. I he beetle is 



from the egg-gallery, shown above the bark. Salween, Tenasserim. (E. P. S. 



