464 Transactions South African Pliilosophical Society, [vol. xii, 



Teox (Omorgus) incultus, Falir., 

 Plate XXXIX., fig. 16. 

 Insect. Caffr., ii., p. 377. 



Black, opaque, but with the tubercles on the elytra shining ; 

 antennae piceous red with the club ashy grey occasionally, but 

 oftener somewhat flavescent, basal joint piceous ; body elongate, 

 elytra sub-parallel, one-third longer than broad ; head and prothorax 

 covered with deep, round punctures closely set, the two tubercles on 

 the head are sub-conical ; prothorax somewhat narrow in proportion 

 to the width of the elytra, somewhat arcuate laterally and deeply 

 sinuate at about the median part, margin not serrate nor dentate, on 

 the disk the walls of the median groove are fiat, the groove itself 

 reaches only from the apex to past the median part, and is divided 

 there into two elongate impressions by a median carina reaching the 

 base, the outer walls of this double impression are connected with 

 the walls of the anterior median sulcus, and in most examples there 

 is a thin, earthy coating fitting the intervals of the disk ; scutellum 

 lanciform, deeply impressed in the centre from the base to two-thirds 

 of the length ; elytra very little ampliate laterally towards the posterior 

 part ; the outer margin is simple, sharp, not fasciculate ; the rows of 

 tubercles are of nearly equal height, the tubercles are shining, 

 elongate, somewhat depressed, those on the row next to the sutural 

 one are slightly larger than the others, while those on the third row 

 are more or less distinctly carinate, especially towards the base, and 

 the intervals are usually impunctate and not tuberculate except in the 

 retuse posterior part where they are distinctly seriato-punctate ; 

 anterior tibiae with a median, somewhat blunt basal tooth, second 

 and apical one forming a laminate process rounded outwardly and 

 nearly transverse at apex ; legs deeply pitted ; posterior tibiae hardly 

 serrate ; prosternum with a sharply acuminate triangular process. 



This species is easily distinguished among the South African 

 ones by the elongate facies, subparallel in proportion to its size, and 

 the laminate shape of the outer part of the anterior tibiae, although 

 this latter character is also found in T. vielancholicns and T. con- 

 sanguineus, in which the median sulcus of the prothorax is divided into 

 two behind by a median carina as in T. incultus. Harold (Monogr.) 

 considers the latter as synonymous with T. squalidns, Oliv. On the 

 other hand, Kolbe (Kaf. D. 0. Afrik.) does not adopt this synonomy, 

 but gives the habitat of T. squalidus as extending to Natal and the 

 Cape. My examples of squalidns from the Boran Galla country are 

 unfortunately females, and thus I cannot compare the shape of the 

 genital organs, but although the general facies is very similar to that 



