168 Mr. M. Jacoby^s contrihKtions to the knowledge of 
CEYPTOCEPHALIN^. 
Cryptocephalus gigas, sp. n. 
Large and robust, entirely flavous, the apical joints of the 
antennse and the basal margin of the elytra only black ; thorax 
impunctate ; elytra rather strongly punctate-striate, the interstices 
smooth and impunctate. Length, 4 lines. 
One of the largest of African Cryptocephali, and in its uniform 
coloration somewhat resembling C. flavidus, Suff., but of quite 
different shape and more cylindrical, the head very flat, shining, 
with a few punctures near the eyes, the latter widely separated not 
deeply notched, mandibles black ; the antennse only extending to 
the base of the elytra, the lower five joints fulvous, the others 
black, rather shorter ; thorax strongly widened at the middle, the 
sides straight, the posterior margin dentate, narrowly edged with 
black, the surface entirely impunctate, flavous; scutellum black, the 
disc fulvous, its apex truncate ; elytra regularly subcylindrical and 
broad, moderately strongly and regularly punctate-striate, the sixth 
and seventh rows more closely approached than the others,; the 
humeral callus with an indistinct piceous spot, the extreme lateral 
margin from the middle downwards, piceous, as well as the sutural 
one ; underside and legs obscurely fulvous, clothed with very 
short silvery hairs, the last abdominal segment with the usual 
deep fovea. 
Eah. Delagoa Bay (Mrs. Monteiro). My collection. 
Cryptocephalus africamis, sp. n. 
Black, the base of the antennse and that of the tibise fulvous; 
thorax fulvous, with two anteriorly-connected black broad patches ; 
elytra regularly punctate-striate, pale fulvous, the extreme margins 
and a short lateral stripe below the shoulders black. Length, 2 
lines. 
Head black, closely furnished with long silvery hairs, punctured 
near the eyes ; antennse not extending to the middle of the elytra, 
black, the lower five joints fulvous, the first joint black above, the 
third joint shorter than the fourth, the thorax strongly narrowed 
in front, the sides strongly rounded and deflexed, the surface 
impunctate, pale flavous, the entire sides occupied by a broad black 
patch leaving the anterior margin narrowly, a subquadrate 
anteriorly-pointed patch in front of the scutellum, and the sides, of 
the ground-colour ; the colour at sides forms a deeply angular band 
caused by the encroachment of the black spot towards the lateral mar- 
gin, and a very small flavous spot is also visible near the base at the 
