1900.] Catalogue of the Colcoptera of South Africa. 467 



outer margin ; scutellum lanceolate, deeply impressed at base; elytra 

 nearly parallel with the shoulders moderately sloping, distinctly 

 serrate along the glabrous outer margin from the base to the suture ; 

 intermediate rows consisting of a series of nine or ten round, glabrous 

 tubercles larger and more distinct on the two dorsal rows than on 

 the sides, the other rows consist of more numerous and therefore 

 more closely set, minor tubercles, the second of these rows being 

 distinctly costate, and the intervals are filled with one series of 

 deeply pitted punctures with walls rising laterally to the height of 

 the tubercles of the intermediate rows ; prosternum somewhat nodose 

 at base ; anterior tibiae very rugose, and having a median, rounded, 

 basal outer tooth and two indistinct serrations above it, while the 

 second and apical teeth form a transverse lamina rounded outwardly 

 and quite transverse at tip, in several of my examples this laminate 

 process is, however, worn down obliquely ; intermediate and posterior 

 tibiae distinctly serrate. 



Harold (Monogr., p. 76) retains T. rusticus, Fahr., as a distinct 

 species. I cannot agree with him. Fahroeus' type, which I saw, is 

 absolutely similar to a co-type of King's T. tuberosus, kindly com- 

 municated by Herr H. Kolbe, of the Berlin Museum. 



This species can be distinguished from the South African ones of 

 this group with subparallel elytra {radula, damarinus, asperidatus) 

 by the tubercles of the two first alternate dprsal rows, which are more 

 developed and more separated from one another, and stand therefore 

 more boldly out. 



Length 12-13 mm. ; width 8-8^ mm. 



Hah. Southern Ehodesia (Salisbury, Victoria Falls). 



In the figure (plate xxxix., fig. 19) the median longitudinal depres- 

 sion of the upper lobe is not quite sufficiently indicated. 



Tkox (Omoegus) ponderosus, n. spec, 

 Plate XXXIX., fig. 18. 



Less parallel than T. tuberosus and with the elytra ampliated 

 laterally almost from the shoulder; the head and prothorax are 

 similar and have a dense terrenous coating, but the sculpture of the 

 elytra differs ; the tubercles are more closely set, setigerous, elongate, 

 and slightly acuminate ; those on the second and third rows are a 

 little more conspicuous than the others, but are not so much separated 

 as in T. tuberosus, and the intervals have a row of small tubercles 

 separated by a transverse puncture ; the outer margin is sharply and 

 acutely serrate, and above the serration, and almost adjoining it, 



