FAMILY SCOLYTIDAE 557 



grubs, I believe, feed upon those of the Tomicus, but 

 further observation is required to definitely settle this 

 point. 



Platysoma rimae ? Lewis (p. 105). This histerid 

 is also predaceous upon the Tomicus insect, and is 

 found in its galleries. This Platysoma may be iden- 

 tical with the one infesting the Scolytus of the deodar 

 (p. 576), but I am doubtful on this point. 



Both Niponius canalicollis and Thanasimus 

 himalayensis, the two predaceous beetles already 

 described as feeding upon the Polygraphus major 

 beetle (p. 507), prey upon the Tomicus ribbentropi FIG. 356. -- riatysoma 



insect in a similar manner, whilst their larvae feed "><" ? Lewis, predaceous 



i , , i i ,r i -i on Tomicus ribbentropi in 



upon the bark-borer grubs in the tunnels in a similar !:) j ue ine x g_ N.W. 



fashion. Himalaya. 



Tomicus (Ips) longifolia, Stebbing. 

 (The Long-needled Pine Tomicus.) 



REFERENCES. Slabbing, Ind. For. Me-n. Zool. Ser. i, pi. ii, 13; id. Depart. Notes, i, 282. 



Habitat. Probably distributed throughout the Pinu* longifolia forests 

 of the North-West Himalaya. I have taken it in Jaunsar, Tehri Garhwal, 

 Kumaun, and Chamba. 



Tree Attacked. Chir Pine (Pinus longifolia). 



Beetle. Smaller than T. ribbenlrofii. \'ery dark ferrugineous brown, with longish rufous 

 brown hairs scattered irregularly over thorax and elytra. Head smooth, moderately shining, 



finely punctate, three prominent tubercles on each side of face. 



Description. Anterior half of prothorax strongly rugose-punctate, basal half smooth 



and shining medianly, punctate laterally; sides clothed with stirt 



yellow hairs. Elytra smooth, shining, striate-punctate, the punctures large and evenly arranged 

 in parallel rows; lateral margins of declivity armed with four teeth i small, sharp, and 

 prominent, and set at a distance from 2; 2 and 3 placed close together on a bulging prominence 

 of the margin of nearly equal size, save that 3 has its apex enlarged into a spade-like club 

 with a constriction at its base ; 4 smaller than 2 and 3, and set midway between 3 and tin- 

 lower margin. -1'iift- pi. lv, fig. ic.) Elytra clothed with stout spiny yellow hairs. Under- 

 surface smooih, shining, punctate, fairly thickly clothed with long yellow hairs, save on the 

 metathorax medianly. Fig. i b shows a dorsal and side view of the female beetle. $ smaller 

 than the female, yellowish brown. The rugosities on the thorax are finer. Length, $ one- 

 fifth inch, $ one-sixth inch. Easily distinguishable from the blue-pine '/'t>micm } by its smaller 

 size, difference in the apical teeth, and different appearance of front of head. 



Larva. Whitish yellow, curved, corrugated, and L-gless. Head well developed, yellow, 

 shining ; first prothoracic segment with a dorsal horny plate to it. Length, a quarter of an inch 

 {pi. Iv, rig. i . 



Pupa. Yellowish white, large and thick. The prothorax shows a well-marked horny shield 

 on the dorsal surface. The wings are bent on to the breast beneath, as also the legs and 

 antennae. Length, about a quarter of an inch. T "ig. I a). 



