FAMILY BUPRESTIDAE 221 



The larva eats out a fairly straight gallery in the bast and sapwood 

 (the bark of this tree is very thin, and the larval gallery even of this small 

 grub therefore grooves the sapwood). The larval gallery appears usually to 

 double back upon itself, the young grub starting in a certain direction and 

 then altering this and curving the tunnel so as to carry it in the opposite 

 one. This procedure is fairly constant. The larval gallery is always 

 tightly packed with wood-excreta and sawdust. When full-fed the grub 

 bores down into the sapwood, eating out a small chamber a quarter to half 

 an inch down, which is parallel to the long axis of the tree. On maturing 

 the beetle crawls up the entrance-tunnel, eats through the bark, and escapes 

 from the tree. Since the beetles were just commencing to issue early in 

 March it is probable that the insect passes through more than one life- 

 cycle in the year. It was very numerous in several trees examined, and is 

 capable of proving a serious pest. 



Trachys. 

 Minute oval beetles. 



Trachys lilliputana, Kerremans. 



Reference.— Kerremaas, C. r. Soc. Ent. Belg. xxxiv, 208 (1890). 



Habitat.— Belgaum, Konbir, Chota Nagpur. 



Tree Attacked.— Unknown. Taken in the forests in Belgaum 

 (Andrewes). 



Beetle.— Oval, constricted at the extremity. Dull bronze above, shining black beneath ; 



densely and regularly punctate and covered with a short sparse greyish-yellow pubescence. 



Prothorax straight anteriorly, trilobed at base, sides rounded. Elytra 



Description. convex, sharply constricted at apex ; punctate with a short scattered 



pubescence : a longitudinal raised costa runs from the humeral calus 



to apex parallel to outer margin. Under-surface punctate. Length, 2 mm. ; breadth, 



1.25 mm. 



This insect was taken by Andrewes in forest areas in Belgaum in 

 May. 



Trachys ball, Guerin. 



Reference. — Guerin, Rev. Zool. 329 {1840). 



Habitat. — Pondicherry. 



Trees Attacked.- .^/6/^^-ia Ichbck, Arbutilon asiatica, and Coelospernum 

 gossypiiun. Pondicherry. 



Beetle.— Bronze, slightly pubescent ; under-surface the same. Head weakly emarginate, 



punctate. Prothorax transversal ; posterior margin with the median lobe produced ; 



irregularly punctate. Elytra punctate with irregularly placed 



Description. smooth and shining spaces between the punctures ; elytral costae 



as in last species. Under-surface punctate. Legs smooth. Length. 



3.25 mm. ; breadth, 2 mm. 



This insect has been taken in August on the leaves of Albizzia lebbck, 

 in the large yellow flowers of Coelospernum gossypium, and in the ripe 

 capsules of Arbutilon asiatica. 



