106 Transactions of the South African Philosophical Society. 



side extending from the apex of the prothorax to the top of the 

 decHvity, the suture sometimes with a narrow pale Hne. 



Prothorax evidently longer than broad, sides subparallel, broadest 

 at the base and very slightly narrowed towards apex, the basal 

 margin rounded: upper surface convex, obscurely punctured, 

 transversely impressed at apex with a very shallow central furrow 

 containing a faint carina ; dorsal margins and the sides with 

 obscure punctures hidden by the scaling. Elytra very elongate, 

 suboblong, the basal margin deeply sinuate and not broader than 

 the base of the prothorax, shoulders almost obsolete, extremely 

 sloping and terminating in a small acute tubercle, the sides parallel 

 from there to near the apex, where they are slightly dilated ; the 

 declivity very abrupt, perpendicular, its upper edge with a very 

 large projecting agglomerated tubercle on each side, and between 

 them two smaller acute tubercles nearer the base ; upper surface 

 transversely convex, with regular rows of large shallow punctures 

 almost hidden by the scaling, the intervals narrow, but scarcely 

 elevated and not tuberculate, except the 6th, which bears a few 

 tubercles in the apical half ; inflexed margins with regular rows 

 of large foveas. Legs dark brown mottled with light brown, or 

 vice versa, and with sparse white setae ; tibiae not scabrous, the 

 outer apical angle rounded ; tarsi rather short and broad. 



N AM AQU ALAND : O'okiep (G. Warden). 



Type in the South African Museum. 



Of this remarkable elongated species I have seen only two 

 examples besides the type. One, in the British Museum and 

 captured by Sir Andrew Smith, agrees fairly well with the type. 

 The other is a much smaller specimen (long. 7J, lat. 3 mm.) in the 

 Oxford Museum and dijffers in the complete absence of the two 

 smaller posterior tubercles, and also in the thorax being as broad 

 as its dorsal length. This may prove to be a good species, but for 

 the present it may be distinguished as var. bicuspis, var. nov. 



BEOTHEUS, Steph. 



Brotheus, Steph., 111. Brit., iv., p. 152 (1831)— Type {porcatus, 

 Mshm. = ) prcemorsus, Thb. 



Ixodicus, Pasc, J. Linn. Soc. Lond., xi.,-p. 448 (1872) — Type 

 occlusus, Pasc. 



The generic characters of Synthocus apply also to this genus except 

 in the following particulars : — 



Head with the superciliary ridges often projecting laterally, but 

 never raised vertically above the level of the forehead. Antennae 



