96 CRYPTODERMA PLICATIPENNE, 
The elytra are much convex at a short distance from 
the base and narrow in regularly curved lines towards the 
end where they are rather narrowly-conjointly rounded; no 
distinct shoulders and faint apical tubercles; two slightly 
raised costae on each elytron, often very indistinct; the 
sutural interstice flat, distinctly broader than the first 
(innermost) costa. The basal margin of the elytra is much 
more directed upwards and forwards in the large males 
than in the small males and females, rather deeply concave 
between the innermost costae in the large males, less deeply 
concave in the smaller males, and straight or nearly so in 
the smallest males and in the females. The basal margin 
outward from the innermost costa has in the larger males 
two notches') of which the one touching the innermost 
costa is the largest, in the smallest males and in the females 
only a trace of this notch is observable. Along the back 
of the elytra the punctuation is arranged in more or less 
regular rows, on the sides the punctuation becomes more 
irregular and the transverse interstices are confluent, so as 
to form irregular wrinkles whence the name of the species 
is derived. 
Hab. North Hast Borneo. — Several males and females 
in the Leyden Museum, received from the Dresden Museum, 
where this species bears (in the Faust-collection) the name 
,convecum Rits.” Under this name a large male-specimen 
from the Faust-collection has been figured on the plate 
belonging to Albert Bovie’s Subfamily Cryptoderminae, 
forming the 70th fascicle of Wytsman’s „Genera Insectorum.” 
Leyden Museum, February 1912. 
1) In brevipenne Rits. there is but a single notch, situated in front of the 
third interstice. 
Notes from the Leyden Museum, Vol. XXXIV. 
