1896.] of the Coleoptera of South Africa. 399 



T^NIOLOBUS NITIDULUS, Klug, 



Peters' Eeise n. Mossamb., 1862, p. 158. 



This species is closely allied to T. incicornis, but it is more shiny, 

 a little larger, and the elytra are more convex and have no humeral 

 angle ; the striae are punctato-striate, and there are two setigerous 

 punctures only on the posterior part of the third stria and another at 

 the apical end of the second ; the elytra are soldered together and 

 there are no wings, the base is granulose and so is the basal part of 

 the outer margin ; head, prothorax, and legs as in D. picicornis. 

 Length 11^-13 mm. ; width 2^-3 mm. 



Hab. Zambezia (Salisbury), Tette (teste Klug), and West Coast 

 (Grand Bassam), teste De Chaud. 



Gen. PACHYODONTUS, Chaud., 

 Ann. Soc. Ent. Belg., 1880, p. 11. 



Mentum longer than broad, with a shallow excavation filled by a 

 broad blunt convex tooth carinate in the middle broadly subquadrate 

 at the base, much longer than the apical part of the inner lobe which 

 is much slanting, the outer lobe is nearly perpendicular ; ligula very 

 concave, produced in the median part in a sharp tooth nearly as high 

 as the lateral angles ; palpi of Scarites ; mandibles of the male 

 straight for two-thirds of the length, falcate at the tip ; labrum 

 narrow, oblique laterally, bisinuate in the anterior part, carinate near 

 the epistoma and with a series of setigerous punctures in front along 

 the carina ; head large, broader than long, quadrate, narrower in 

 front of the eyes which are moderately convex, and with two deep 

 longitudinal impressions in the anterior part ; prothorax twice as 

 broad as long with the posterior angles acute, the basal part truncate 

 obliquely with the median part produced behind ; elytra short with 

 the humeral angle sharp, dentate, the base sinuate, and the margin 

 itself forming a very sharp carina ; abdominal segments with two 

 punctures in the median part, anal one with four; anterior tibiae with 

 long external teeth, intermediate ones unidentate. 



The shape of the tooth in the mentum, that of the mandibles in 

 the male, which are not unlike those of Mantichora, and the absence 

 of intramarginal carina on the elytra, are peculiar to this genus, the 

 habitat of which seems to be restricted to the Cape Colony. 



Pachyodontus languidus, Wiedem., 



Plate IX., fig. 2. 



Zool. Mag., ii., 1, p. 35. 



Black, subopaque ; palpi and tarsi piceous ; head quadrate, but 



a little narrow^ed in front of the eyes, smooth, with two parallel 



depressed lines in the median anterior part, and a shallow faintly 



