FAMILY HOSTRYCHIDAE 175 



the sapwood more or less horizontally, turned away at an acute angle as 

 they proceeded deeper into the wood. Only quite small grubs were found 

 near the bottom of the female tunnels. The egg-tunnels go deep down into 

 small poles, and in some cases observed the poles were seriously weakened 

 by the attacks of the beetles. 



Sinoxylon indicum, Lesne, 



Habitat. —North Coimbatore, Madras. 



Tree ktta.cked.^Anogeissus latifolia. Lokanhalle, North Coimbatore. 

 Beetle.— Small, elongate, cylindrical, dark red-brown, shining. Head 

 black, rugose-punctate. Frothorax very convex, raised into a transverse 

 ridge medianly, the anterior portion coarsely 

 Description. rasp-like,\vith four teeth on either side of anterior 



margin, the innermost ones the largest; posterior 

 part hnelv rugose-punctate. Elytra scarcely widened apically, rugose- 

 punctate, the rugosities coarser in apical portion ; declivity rugose-punc- 

 tate, with two sharp teeth placed centrally one on each side of suture, ^ 

 the outer edges of declivity raised and broadly toothed. Length, yk,. 120. 

 5.5 to 6 mm. Sinoxylon indicum, 



Lesne. Madras. 

 This insect oviposits in fairly fresh Anogcissus latifolia 



wood. I found the beetle riddling the posts supporting 

 Life History. the roof of the veranda of the bungalow at Lokanhalle 



in North Coimbatore in August 1902. These posts con- 

 sisted of Anogcissus latifolia poles cut and placed in position when the 

 bungalow had been repaired a short time previously, the wood consequently 

 being quite green. The insect was hard at work on the loth and nth of the 

 month, engaged in laying its eggs in the wood. On the external surface of 

 the posts round holes were visible, many having small masses of fresh wood- 

 powder at their entrances. The beetle tunnels in horizontally for a distance 

 varying from half an inch to an inch, and then turns to the right or 

 left" and eats out a tunnel which curves round the stem, running in a more 

 or less horizontal direction. Near the bottom of this tunnel the eggs are 

 laid, I have not taken the grubs of the insect, 



Sinoxylon conigerum, Gerst. 



Reference.— Gerst. .1/. Berl. Acad. p. 268 (1855)- 



Habitat, — Tinnevelly, Madras, 

 Tree Attacked. — Albizzia amara. Tinnevelly. 



Beetle.- Short, squat, and stout, easily distinguished from atratiiin by its much broader 



and squat appearance. Black, slightly reddish, moderately shining. Prothomx convex, raised 



on disk ; posterior portion finely rugose ; anterior rugose-punctate, the 



Description. rugosities coarsest anteriorly and laterally ; four lateral teeth on 



anterior margin, the inner three large, sharp, and more or less of equal 



size. Elytra one-third as long again as prothorax, slightly widest apically : rugose-punctate. 



