420 
DIAPUS (?) HERITIERA,, n. sp, 

Plate XXIV, fig. 5. 
Reference :— Provisionally named as Diapus ? heritiere, 
Classification:~Order, COLEOPTERA. Family, Scolytide. Sub- 
Family, Platypini. 
Tree attacked :—Heritiera littoralts, Sundri. 
Description. 
Beetle,—Elongate, narrow, shining. Head dark chestnut- 
brown or black ; thorax chestnut-brown; elytra pale yellow, 
slightly tinged with chestnut on basal margin and merging into pale 
chestnut-brown in upper third, becoming chestnut-brown in apical 
fourth. Antennz yellow, legs chestnut-brown. Head vertical, 
not broacer than thorax, rugose, with scattered spiny yellow 
hairs on front. Thorax about a quarter as long again as wide, 
only slightly emarginate at sides below middle, anterior margin 
straight; glabrous, and finely punctate. Elytra striate-punctate ; 
4 striz prominent at base, the outer marginal one most prominent, 
the second from suture becoming less marked soon after leaving 
base, the first interstice from suture raised, the fourth strongly 
raised and convex, with scattered large punctures ; a depression 
between second and third striz depressed at base; apex truncate, 
showing 8 well-defined ridges, the depressed portion in ¢ set 
with 5 teeth on side and 4 apical ones of which the outermost. is 
prolonged and turned outwards; ¢ unarmed ; the truncate por- 
tion and marginal edges of elytra set with yellow spiny hairs, 
denser apically. Under-surface brown, abdominal segments dark- 
brown to black, and are very short ; concave and rugulose in 2. 
Anterior tibiz toothed on outer edge. Length ¢ 4°7 millim., 
?3°9 millim. Fig. 5 shows the male of this.insect. 
Life-History. 
This insect was first found by Ranger B. C. Sen Gupta, 
tunnelling into sundri (Herztiera littoralis) wood in June 1902. 
An examination of some pieces of attacked timber showed that 
the insect bored right down into the heart-wood, the gallery 
made by the beetle being quite straight. The following year 
