FAMILY SCOLYTIDAE 561 



graphus longifolia in the middle of October. The beetles were evidently engaged 

 in egg-laying, and the grubs probably feed on those of the Toinicus and Poly- 

 graphus beetles. I had already taken what I think is the same beetle in a 

 newly dead tree a week previously. I think these latter beetles were just 

 maturing, their grubs having fed upon those of the Tomicus and Polygraphus 

 beetles. The stem and bark were covered with the egg and larval galleries of 

 these two beetles, but the generations had matured and left the tree. These 

 genera of histerid beetles are undoubtedly of great importance in the forest. 



Tachyta nietneri, Schaum. The larva is probably predaceous upon the 

 Tomicus grubs (p. 96). 



Timnochila coerulea, Oliv., var. This large, elongate, blue-black tro- 

 gositid is predaceous upon the Tomicus and also upon Polygraphus longifolia. 

 The beetle is figured on p. 115. 



Thanasimus himalayensis, Steb. This clerid beetle feeds upon the 

 Tomicus beetles. It is described on p. 508. 



Tomicus (Ips) sp. 



REFERENCE. Stebbing, The Chilgoza Forests of Zhob and the Takht-i-Suliman, For. Bull. 



no. 7, p. 27 (1906). 



Habitat. Takht-i-Suliman, North Zhob, Baluchistan. 

 Tree Attacked. Blue Pine (Pinus excelsa). Takht-i-Suliman. 

 Beetle. Smaller than ribbentropi. Has a general resemblance to it. The specimens 

 taken were in too poor a state of preservation to make description possible. 



I took a few dead individuals of this beetle from a large wind-blown blue 

 pine in the Torgai nala at the lower part of the Maidan 

 Life History. on the Takht-i-Suliman range of the SulimanMountains 

 in North Zhob in November 1905. I saw other evi- 

 dences of the work of this insect in blue-pine trees in this locality. There 

 was no forest conservancy in this part of the country at that time, and a 

 large tree was felled even if it was only desired to fashion a rude wooden 

 door from one of the logs by the crude, wasteful, and lengthy method of 

 chipping off the wood till the desired size and thickness is attained. The 

 life history of the insect would seem to resemble that of T. ribbentropi. 

 Three females appear ordinarily to pair with the male, the egg-galleries 

 grooving both bast and sapwood, the larval galleries being made in the 

 bast only. This is all that is at present known of this insect. 



Tomicus (Ips) blandfordi, Stebbing. 



REFERENCE. Stebbing, Ind. For. Mem. Zool. Ser. vol. i, pt. ii, 27. 



Habitat. Zhob, Baluchistan, Suliman Mountains. 

 Tree Attacked. Chilgoza Pine (L'inns gcrarJiana). Shinghar, Zhob. 

 Beetle. Oblong, shining. Head and prothorax black ; elytra rufous brown. Head 

 uniformly rugose-punctate on front, \viili two small tubercles placed close together transversely 



just below the middle and on each side of a short, narrow, longitudinal 



Description. depression ; a thick fringe of yellow hairs above and below the mouth, 



and clothing more sparsely the front. Vertex striate with largish 



shallow confluent punctures, which become finer and more numerous on the sides. Prothorax 

 9003 N N 



