172 Mr. M. Jacoby's contributions to the knowledge of 
Cryptocephalus gahonensis, sp. n. 
Dark fulvous ; the antennae and legs flavous ; thorax impunctate, 
shining; elytra finely punctate-striate, flavous, the disc occupied by 
a large transverse fulvous band. Length, 2 lines. 
Head sparingly punctured at the vertex, very flat, fulvous, eyes 
very large, closely approached at the vertex, deeply angularly 
notched, clypeus with a few fine punctures; the antennae extending 
to the middle of the elytra, entirely flavous, all the joints from the 
third slender, the third and fourth equal ; thorax very convex and 
greatly widened at the middle, the posterior margin finely dentate 
throughout, lateral margins rounded, narrowly margined, the sur- 
face very shining, entirely impunctate, dark brown, with traces of 
darker spots; scutellum broad, pale fulvous, the base and apex 
margined with black ; elytra very finely punctate-striate, the punc- 
tures distiuct to the apex, the interstices slightly convex at the 
sides, flavous ; a large dark fulvous transverse band occupies almost 
the entire disc, but does not extend to the base or apex, but to the 
sides, where it is narrowed ; it leaves less than a third of the length 
of the elytra at the base and apex of the ground-colour ; underside 
fulvous, legs flavous, prosternum broader than long, the posterior 
angles pointed. 
Hah, Gaboon ; my collection. 
Cryptocephalus jperingueyi, sp. n. 
Head at the vertex and the breast black; thorax obscurely fulvous, 
spotted with flavous, finely punctured; elytra finely punctate-striate, 
the interstices punctured, flavous, a sutural and sublateral band and 
the lateral margin posteriorly black ; legs flavous. Length, 
1^ lines. 
Head rather coarsely punctured, the vertex, in shape of a semi- 
circular band, black, lower part flavous; antennae flavous, the upper 
joints more or less fuscous, distinctly widened, not extending much 
beyond the base of the thorax, the latter scarcely more than twice 
as broad as long, the lateral margins distinctly rounded in front, 
the surface closely and distinctly punctured anteriorly and at the 
sides, these as well as the anterior margin very narrowly and two 
transverse spots at the base flavous, the rest of the surface obscurely 
fulvous, both colours ill-defined ; scutellum broad, its apex pointed, 
black; elytra subcylindrical, finely and regularly punctate-striate, 
the interstices with a single row of fine punctures, flavous, the 
