274 MR. M. JACOBY ON COLEOPTERA {May 21, 
posteriorly, the interstices slightly convex ; underside black ; legs 
fulvous, the posterior tibise sometimes piceous ; anterior coxal 
cavities closed. 
From Corozal. 
Although I have not much doubt that I am rightly referring the 
present insect to von Harold’s genus, there are differences to be 
found which are rather important from a structural point of view ; 
thus in S. haroldi the antennze have the third joint nearly twice as 
long as the preceding, instead of these joints being both extremely 
short; the posterior femora also do not extend beyond the abdomen 
as in the type, and the posterior tibiz are distinctly channelled near 
the apex; as, however, all other characters, including the thoracic 
groove placed closely to the margin, the closed cavities and other 
details, agree well with the description of that author, the above- 
mentioned differences are doubtless more specific than generic. From 
S. haagi, S. haroldi is well distinguished by the trausversely shaped, 
not quadrate, thorax and the black underside. 
CREPIDODERA CASTANEA, N. Sp. 
Dark brown; antennz and legs flavous; thorax subquadrate, 
strongly punctured ; elytra regularly punctate-striate, the interstices 
costate at the sides. 
Var. above paler brown. 
Length ?-1 line. 
Head impunctate, the frontal tubercles small but distinct, the 
lower part of the face rather deflexed and flattened, nearly smooth ; 
palpi flavous ; antennee slender, nearly two thirds the length of the 
body, entirely flavous, all the joints with the exception of the second 
of nearly equal length ; thorax one half broader than long, the sides 
concave, the angles acute, the surface rather convex, with a not very 
deep transverse sulcation near the base, which is not bounded 
laterally by a longitudinal groove, but extends upwards a short 
distance along the sides, the disk strongly punctured ; elytra convex, 
pointed at the apex, the basal portion distinctly raised, regularly 
and rather strongly punctate-striate, of a uniformly dark brown colour 
like the head and thorax ; legs entirely flavous ; the first joint of the 
posterior tarsi as long as the three following joints together ; anterior 
coxal cavities closed. 
San Esteban. 
This very small species seems to be allied to C. pleuralis, Har., 
from Bogota as regards the non-limited thoracic groove; the shape 
of the thorax and the dark uniform brown colour of the upper surface 
will help to distinguish C. castanea from its allies. 
CacoscELIs (?) SEMIFULVA, 0. Sp. 
Reddish fulvous; the antenne, the apex of the femora, and the 
tibize and tarsi black; thorax impunctate; elytra metallic blue, 
extremely closely and finely punctured. 
Length 2 lines. 
Head impunctate, transversely grooved between the eyes; the 
