1900.] FROM SOUTH AND CENTRAL AFRICA. 235 



before the middle, the punctation strong anteriorly, rather finer 

 towards the apex, often irregular and consisting of double 

 punctures, those at the sides deeper and the interstices at the 

 same place rather costate, the last one more strongly so ; legs 

 fulvous, the femora darker, mucronate : prosternum with lateral 

 sulci. 



Hah. Salisbury, Mashonaland, ou mimosa (G.Marshall). 



The most nearly allied and described species seem to be 

 R. puncticollis Har. and R. natalensis Lefev. (sub Syagrus) : the 

 first named is, however, described as having an opaque thorax 

 and the elytra distinctly broader at the base, with much finer 

 punctures posteriorly ; of double rows the author says nothing. 

 Lefevre's species is described in four lines, and the colour as 

 " brunneo-testaceous " with an seneous gloss ; the length is given 

 as 3 millim. : the certain I'ecognition of the species is accordingly 

 an impossibility. R. micans Grerst. has a more finely punctured 

 thorax and regularly simply punctate-striate elytra. 



Rhembasttjs affinis, sp. n. 



Oblong-parallel, piceous with seneous gloss ; antennae with the 

 apical joints piceous, legs dark fulvous ; thorax coarsely punctured ; 

 elytra strongly punctate-striate, the interstices slightly convex. 



Length 3 millim. 



Head rather strongly and closely punctured, with a central 

 longitudinal groove ; the clypeus separated from the face, trans- 

 verse, impressed with a few punctures ; eves preceded by a 

 rather broad sulcus ; antennas scarcely extending to the middle 

 of the elytra, flavous, the terminal two joints piceous, the 

 second and the following four joints equal, the next two 

 slightly dilated, the ninth joint rather thinner, the terminal ones 

 stouter again ; thorax transverse, the sides feebly rounded, the 

 anterior margin about one-third less wide than the posterior one, 

 the surface coarsely and rather closely punctured, the punctures 

 extending to all the margins ; elytra with a very shallow depression 

 below the base, very strongly punctate-striate, the interstices with 

 some very fine punctures, convex at the sides, the lateral margin 

 preceded by a row of closely placed punctures ; legs robust, 

 fulvous, the femora with a very minute tooth ; prosternum longer 

 than broad, its surface rugose, longitudinally sulcate at the sides. 



Hah. Salisbury, Mashonaland, obtained by beating (G. Marshall). 



Allied to 11. obscurellus Gerst. and R. cylindrifonuis Jac, but 

 distinguished from either by the strong punctation of the thorax 

 and the elytra. The present species greatly resembles Liniscus 

 natalensis Lefcv., but the sulcus in front of the eyes and that of 

 the prosternum place the insect in Rhembastus, with which it also 

 agrees in other respects. 



Ehembastus nigripes, sp. n. 



Black below as well as the legs, the lower joints of the antenna?, 

 the head, and the thorax fulvous ; thorax closely punctured ; elj < ia 



