South African Coleopterous Fauna. 171 



are longer, the prothorax more closely foveolato-punctate, the juxta- 

 median yellowish patches on the elytra are smaller, and there is an 

 apical one which is not at all indicated in M. biplac/iatiis. 



Length 19 mm. ; width 5^ mm. 



Hab. Southern Rhodesia (Umtali). A. Bodong. 



MACROCHILUS VABIANS, n. sp. 



Head and elytra, abdomen and metasternum black, shiny, labrum, 

 prothorax, and legs testaceous-red ; antennae, with the exception of 

 the second and third basal joints, which are deeply infuscate, brick- 

 red ; head very broad, covered with closely set, sub-contiguous 

 round punctures ; prothorax very short, broader than long, truncate 

 in front, rounded and ampliated laterally, strongly constricted and 

 sinuated above the hind angle which is very sharp, median part of 

 the base plainly produced behind, covered with closely set foveate 

 punctures, clothed like the head with a very short, greyish pubes- 

 cence, and having on each side of the posterior part a deep impres- 

 sion which makes the outer angle appear as if it were reflexed, it is 

 not as wide as the head and eyes ; elytra nearly parallel, but slightly 

 ampliated laterally towards the posterior part, narrowly striate, with 

 the striae punctate and the intervals convex in the anterior part, 

 plane in the posterior, and covered with numerous very closely set, 

 fine yet deep punctures. 



I have seen two examples only of this species ; in the one the 

 elytra are concolorous, in the other there is a yellowish-red band 

 beginning near the base and extending on the fourth and fifth intervals 

 to a short distance from the median part of the disk. This species 

 is easily identified by the very short prothorax, which is strongly 

 constricted behind, but not, however, quite as much incised there 

 as in M. viduatus, Pering. 



Length 8^-10 mm. ; width 3-3|- mm. 



Hab. Southern Rhodesia (Umtali). A. Bodong. 



TRIBE BEACHINTNI. 



GEN. BRACHINUS, Weber. 

 BRACHINUS MACTUS, n. sp. 



Head, prothorax, pectus, and legs testaceous-yellow, antennae 

 black, with the basal joint and part of the second yellowish ; elytra 

 black, with three dorsal yellowish patches and the outer margin 



