1896.] of the Coleoptera of South Africa. 521 



Gen. ECTENOGNATHUS, Murray, 

 Ann. and Mag. Nat. Hist., 1858, ii., p. 340 ; List of Coleopt. from Old 

 Calabar, &c., reprinted from the Ann. and Mag. Nat. Hist., 1857- 

 71, p. 58, with fig. 



Mentum with a median concave tooth rounded at the tip ; man- 

 dibles long, subfalcate ; labrum moderately emarginate, labial and 

 maxillary palpi very long, the last one of the maxillary as long as 

 the penultimate ones, quite cylindrical and truncate at the tip ; eyes 

 very prominent, head with two round impressions on the vertex; 

 prothorax narrow, very cordiform, convex on the disk ; elytra nearly 

 twice as broad as the prothorax, elongated, subquadrate and mode- 

 rately convex ; legs of Chlcenms. 



ECTENOGNATHUS DISPAR. 



Light testaceous on the upper and under parts ; apical part of the 

 jaws infuscate ; head smooth, with a deep depression on each side of 

 the basal part of the epistoma, and with a very distinct one near each 

 eye ; anterior part of the head paler than the posterior ; prothorax 

 truncate at the tip, cordiform, nearly smooth except at the base which 

 is plicatulate, convex in the median part of the disk with the outer 

 margins reflexed, narrowly grooved longitudinally in the middle and 

 with two long supra-basal, lateral, narrow impressions ; elytra twice 

 as broad at the base as the prothorax with the shoulders sloping ; 

 elongato-ovate from the humeral angle, slightly convex, punctato- 

 striate with the intervals plane, very finely aciculate, the first and 

 alternate ones with a median series of regularly disposed punctures, 

 light testaceous with a broad basal black band, leaving a clear space 

 of the yellow background on the outer part of the base, and bi- 

 sinuate in the posterior part, and a posterior one reaching the outer 

 margins sending a long spur towards the middle and strongly bi- 

 sinuate behind, suture and first interval on each side black ; under 

 side and legs pale yellow, the pectus darker. Length 13 mm. ; width 

 5 mm. 



I have seen only one female example of this species. 



Hab. Middle Limpopo. 



Gen. PLEEOTICUS. 



Ligula long, horny, broadly triangular at the tip, which is sinuate 

 and bears two setae ; paraglossae nearly as broad as the ligula, adhering 

 to it with the tip slightly diverging and a little longer; mentum 

 moderately excavate, filled in the middle by a sharp tooth as high as 

 the inner angle of the internal part of the lobe, the upper edge of 

 which is very oblique ; last joint of the labial palpi almost pyriform 



