374 
CKRYSOMELIDjE. 
D. rugosci differs from D. ceylonensis in the evenly rugosely 
punctured thorax, the latter in the last-named species has the 
interstices irregularly reticulate. 
661. Dennorhytis violacea, sp. n. 
Violaceous ; labrum, palpi and basal joints of antennse fulvous. 
Head very closely punctured, punctures at the sides confluent, 
studded each with a short grey hair; clypeus not separated from 
the face, very closely punctured ; antennae with the basal five joints 
piceous, apex of each fulvous, rest wanting in the type and only 
known specimen. Thorax scarcely twice as broad as long, sides 
rounded, angles pointed, surface punctured like the head, the 
punctures crowded and confluent at the sides and rather larger, 
interstices with some minute punctures, an obsolete depression on 
each side near base, basal margin preceded by a deep transverse 
groove. Seutellum shining, greenish, pointed. Elytra nearly 
parallel, bluntly pointed at the apex, wider at base than the 
thorax ; surface with a few fine rows of punctures near the suture, 
rest of disc entirely covered with strong transverse rugae which 
assume the shape of tubercles near apex. Body beneath clothed 
with fine short pubescence, tibiae and tarsi more or less piceous. — 
In the 5 the thorax is more transverse in shape. 
Vcir. Entirely dark aeneous. 
Length 7 mm. 
Hob. Ceylon {Coll. Brit. Mus.). 
Distinguished by its entirely violaceous colour, the rounded 
sides of the thorax and sculpture of the elytra. 
662. Dennorhytis punctatissima, Jac. (Ckrysolampra) P. Z. S. 
1887, p. 73. 
iEneous or dark purplish ; labrum and 
the basal joints of antennae more or 
less fulvous. 
Head extremely closely and rather 
finely rugose-punctate, each interstice 
studded with a short grey hair ; an- 
terior border of the clypeus semicir- 
cularly emarginate ; antennae slender, 
terminal five joints slightly widened. 
Thorax nearly twice as broad as long, 
sides rounded at the middle, anterior 
angles prominent ; surface sculptured 
like the head, the punctures rather 
larger ; interstices minutely punctured, 
rugose at sides, furnished with short hairs 
as on the head. Seutellum subovate, 
shining, metallic green. Elytra entirely 
covered with strong transverse rugosities, 
which near the apex become tuberculate ; area near base and 
Fig. 130. 
Dermorhytis 'punctatissima. 
