1896.] of the Coleoptera of South Africa. 153 



infuscated, but the most distinctive character is found in the pro- 

 thorax, which is a httle more robust and covered with moderately 

 closely set punctures, not abundant on the anterior part, while in 

 G. amoenula these punctures are very closely set as well in the 

 anterior as on the discoidal or posterior part. Length 6 mm. 

 width 2 mm. 



Hab. Cape Colony (Stellenbosch). 



Casnonia eufopicea, Chaud., 

 Bull. Mosc, 1862, iv., p. 289. 



Head black, smooth, with a subovate impression in the centre ; 

 palpi, apical part of mandibles, antennae, and legs pale yellow ; pro- 

 thorax light reddish brown ; elytra light reddish brown, deeply 

 striate, with the striae broadly punctured from the base to two-thirds 

 of the length. Length 6^ mm. 



Hab. Natal (D'Urban), teste Chaud. 



Gen. STENIDIA, Brulle, 

 Hist. Nat. Ins., iv., 1835, p. 151. 



Mentum broadly incised, with the median tooth nearly as long as 

 the lateral lobes ; ligula slender, deeply notched at the tip, and with 

 a long seta on each side of the tip ; paraglossae nearly pellucid, and 

 a little longer than the ligula ; last joint of labial and maxillary palpi 

 fusiform, and truncated at the tip ; mandibles slender, projecting ; 

 labrum quadrate ; head ovate, with a distinct neck ; antennae reach- 

 ing the base of the elytra, the first joint thickened, long, the second 

 short, the third one as long as the first but slender, the fourth taper- 

 ing at the base, and the others about equal ; prothorax subcylin- 

 drical ; elytra broader than the prothorax, elongated, parallel with 

 the anterior angles rounded, truncated obliquely behind, and slightly 

 convex on the upper part, punctato-striate, with three punctures on 

 the third interval ; legs slender ; joints of tarsi long, identical in 

 both sexes, hairy underneath, with the fourth one slightly incised ; 

 claws not pectinate. 



Like Casnonia, Stenidia are found in South Africa in damp, marshy 

 places under tufts of grass. They seem to be restricted to Africa. 

 The species known outside the South African limit are found in 

 Senegambia, the Congo, Angola, Zanzibar, Mombassa. 



Synopsis of Species. 



Head black ; prothorax red. 



Elytra totally green ; the four basal joints of antennae, reddish elegantula. 

 Elytra totally green, very narrow ; the two basal joints of an- 

 tennae reddish . . angusta. 



