DIORYCTUS. 
177 
Body strongly rounded and convex. Head broad and Hat; 
eyes widely separated, broadly einarginate, emargination sub- 
triangular ; antennae short, terminal six joints dilated. Thorax 
transverse, basal margin strongly oblique, drawn out into a point 
at middle, finely serrate. Scutelium invisible. Elytra with 
strongly produced aud angulate epipleural lobes extending nearly 
to middle of length. Legs short and robust, tibiae dilated at apex. 
Prosternum slightly transverse, subquadrate, sides strongly raised 
into a ridge, diverging outwards anteriorly, middle with another 
more blunt longitudinal elevation. First abdominal segment very 
broad. 
A well-marked genus on account of the highly convex and 
rounded shape, invisible scutelium, strong elytral lobes and struc- 
ture of prosternum. Atropiclius, Chap, does not seem to differ 
from this genus, and the type species (A. improbus, Chap.) is very 
inadequately described. 
302. Dioryctus porculus, Suffr. Linn. Ent. xiv, 1860, p. 5. 
“ $ . Black ; basal joints of antennae ffavous ; breast, coxae and 
knees brown ; elytra reddish-brown, margins and apex black. 
“ Head with lower portion and area near the eyes distinctly 
punctured ; clypeus brown, feebly and sparingly punctate ; head 
black at base ; eyes elongate, triangularly emargmate ; antennae 
scarcely longer than the thorax, joints three to five each as long 
as the second but thinner, terminal joints thickened, basal five 
ffavous, the rest black, the base of each piceous, furnished with 
solitary long white hairs. Thorax short and broad, basal margin 
produced into a point at middle, surface extremely finely aud 
remotely punctured. Scutelium scarcely visible. Elytra only a 
little longer than broad, epipleural lobes strongly produced ; sur- 
face very finely and remotely punctured, outer interstice slightly 
convex, the others fiat, scarcely punctured, basal and lateral 
margins black, latter gradually widened towards apex. Underside 
strongly punctured anteriorly ; abdomen finely wrinkled, black. 
“ Fan. Entirely reddish-brown. 
“ Length 3-4 mm.” (Suffrian.) 
Bab. Ceylon. 
Described from a single female specimen, that had a large but 
not deep fovea on the middle of apical abdominal segment. 
303. Dioryctus madurensis, sp. n. 
Black, with a slight greenish tint ; basal joint of antennae 
ffavous. 
Head impunctate; antennae black, basal three joints flavous ; 
eyes subquadrately emargiuate. Thorax more than twice as 
broad as long, medial lobe acutely pointed, surface impunctate. 
Elytra ovately subquadrate, slightly narrowed at apex ; epipleural 
yol. i. n 
