928 MR. G, A. K. MARSHALL ON [Dec. 11, 



rectangular ; sides scarcely rounded, subparallel to beyond 

 middle ; apical processes absent in both sexes ; upper surface 

 with broad sulci containing rows of large shallow punctures 

 separated by small granules, the intervals all evenly raised and 

 with regular rows of larger granules ; granules bare, with short 

 depressed black setje, which, however, are much longer and erect 

 on the declivity ; the interstices with thin, very scattered, white 

 scaling. Legs moderately slender, the posterior pairs of tibite not 

 dentate internally ; posterior tarsi with joints 1 and 3 of equal 

 widtb, 2 a little narrower, 2 and 3 subequal in length, 1 distinctly 

 longer. 



Cape Colony : Sir Lowry's Pass and Ashton {F. Pur cell). 



Types, S in the British Museum, 5 in the South Afiican 

 Museum. 



The two examples here associated present a very different 

 appearance superticially, owing to the fact that in the $ the 

 granules on the elytra are much lai-ger and distinctly elevated ; 

 whereas in the c? they are small and much depressed, giving the 

 insect an appearance very much like that of H. caffer. 



A similar form of variation may, however, be observed in other 

 species of the genus, such as wahlhergi Boh. &c., and in all other 

 respects these examples ai-e clearly refei-able to a single species. 



HiPPORRHINUS FOVEOLATUS, Sp. nov. 



Long. 8|^-13|, lat. 3-4-6 mm. 



Head convex and closely punctured on vertex ; forehead flattened, 

 more sparsely punctured, and with a distinct central fovea ; ante- 

 ocular fui'rows absent. Rostrum not incised at base, moderately 

 stout, scarcely curved, slightly dilated at apex ; upper surface 

 with a shallow central furrow, rather deeper anteriorly, the 

 adjoining costse with a fevf setigerous punctures ; upper lateral 

 sulci complete, deep anteriorly but uniting very shallowly at base, 

 the lower sulci much abbreviated ; scrobes directed beneath base 

 of rostrum ; the infei-ior basal fui-row shallow. Antennce with 

 the scape scarcely i-eaching eye, the first joint of funicle rather 

 longer than the second. Prothorax a little broader than long, its 

 length equal to the width at base, the apex slightly narrower ; 

 sides moderately rounded, broadest about middle, apical margin 

 truncate dorsally ; ocular lobes feeble ; upper sui-fa.ce convex, closely 

 set with small rounded tubercles, leaving an ill-defined central 

 furrow containing a strong carina ; tubercles bare, each with a 

 very shoi't depressed seta ; the interstices with scattered large 

 round white scales. Elytra oblongo-ovate, shoulders' roundly 

 prominent, sides subparallel from shoulders to beyond middle ; 

 apical processes very small and conical in both sexes ; upper surface 

 convex, with regular rows of large subreticulate fove?e, the intei'vals 

 narrow, smooth and devoid of granules dorsally, but with traces 

 of depi-essed granules laterally and on the declivity; black, shiny, 

 with small scattered patches of large white scales and with a few 

 minute depressed setae. Legs moderately stout, with sparse white 



