FAMILY SCOLYTIDAE 



true it should be possible to ascertain its local distribution and ex- 

 terminate it. 



A second point of importance is that the insect has been found invariably 

 in pure deodar forests, the greatest damage being caused in young pure 

 pi mtations. It is much rarer in mixed forests, a point worthy of some 

 nsideration. 



Sub-Family 3. SAK'I IDK.VI ATAI . 



Ld;;es of middle jaw fringed with bristles. The sub-family contains the tribes 

 G/rthvlinae ed in the Indian forest; and Xyleborinae. 



Tribe XYLEBORIXAE. 



The first joint of the labial palp swollen, and furnished on the inner 



: with a beard of hairs. Includes the very important and large genus 



Xylchont'-,, and the genus Xyloterm, of which one species only is known from 



In': 



XYLEBORUS. 



The genus Xyleboms includes a vast number of species of small form 

 and great economic importance in the East. 



Xyleborus fallax, Eichhoff. 



'.hhoff, Kalio Tomic. p. 508 fi^j'j) ; Stubbing (Tomicus shoreae), Undescr. Scolyt. Ind. 



if, ; id. Ass. Sal Ins. Pests, /-'or. Hull. no. n, p. 



Habitat. Assam, Bengal lJuars. 



Tree Attacked. Sal (Shorea rohwda). Goal para, Assam ; Jalpaiguri Sal 

 I -rests, Du, 



Beetle. Elongate, rather slender, with an elongate convex reddish thorax and dark 



tra. I'rotho: -fifth longer than broad. Moderately strongly rugose-punctate 



anteriorly with :i f>:". scattered yellow hairs ; finely pitted on posterior 



Description. portion with irregular fine transverse lines and striations. Klytra 



irregularly punctate, with an ill-defined stria not reaching base and 



the sun. api'.nl fleelivity of elytra furnished with three prominent teeth on 



each side and three smaller ones. ;ittered hairs on the surface. Under-surface 



slightly punctate and sp .em. Legs and antennae yellowish red. Length. 3.1 mm. 



(Figs. 4 and 5, pi. 1 



I have taken this insect only sparingly. Specimens were found on 



if> May tunnelling down into the sapwood of a green 



Life History. sal-tree felled in the Kachugaon Forest on the I3th 



of the month. The beetles were tunnelling into the 



main trunk Ranger ii. Sen Gupta cut out some specimens of this insect 



in the Jalpaiguri forests in the Bengal Duars. 

 1 the information at present available on the species. 



