1904.] OF THE GENUS HIPPORRHIKUS. 57 



strongly marked, especially that on interval 2 ; the tubercles on 

 the prothorax are smaller and more closely set, and its lateral 

 projection is much blunter and not spiniform as in spectr^wi. 



41. H. SPixiFER Gyl. 



R. spinifer Gyl. Schonh. Gen. Cure, v, p. 748 (1840). 



Long. 7^-10, lat. 3|-5 mm. 



Head convex, with gi'ey scaling, forehead more or less distinctly 

 wrinkled longitudinally ; anteocular fvirrows entirely absent. 

 Rostrum not incised at base, as long as head and prothorax, 

 scarcely curved and strongly dilated apically. Upper surface 

 densely squamose, with a deep central furrow throughout and a 

 distinct smooth costa on either side of it ; lateral sulci deep, not 

 uniting at base, the lower one longer but narrower than the 

 upper ; scrobes shallow and lateral ; inferior basal furrow absent. 

 Antennte with scape not reaching eye ; the two basal joints of 

 funicle subequal. Prothorax transverse, a trifle longer than the 

 width at base, which is equal to the apex, sides dilated and pro- 

 duced behind middle into a sharp spine directed backwai'ds, 

 dorsal anterior margin slightly emarginate in middle, ocular lobes 

 distinct. Upper surface convex, with a very deep centi^al furrow 

 containing no carina, but fl.anked on either side by a broad elevated 

 and tuberculated costa bearing a sharply prorainent tubercle 

 behind ; the space between the costa and lateral spine is smooth 

 like the central furrow ; tubercles bare, with shoi-t subdepressed 

 setee, the interstices clothed with fine grey setiform scaling. 

 Elytra very short, broadly ovate, scarcely narrower in S , shoulders 

 roundedly prominent, sides ampliated, broadest about middle, 

 apical processes absent. Upper surface convex, with regular but 

 rather intei'rupted rows of distinct granules ; interval 1 with a 

 row of small separated granules ; intervals 3, 5, and 7 with narrow 

 elevated carinee bearing rows of depressed and elongated granules ; 

 intervals 2, 4, and 6 plane ; granules shiny and with depressed 

 pale set?e, the interstices densely clothed with fine grey setiform 

 scaling. Legs elongate, with dense grey setse forming a narrow 

 paler ring near apex of femora ; tarsi elongate, posterior pair with 

 the joints of about even width, 2nd and 3rd subequal in length, 

 1st rather longer. 



Cape Colony : Cape Town {Prof. Lloycl Morgan). 



Type in Paris Museum {teste Schonherr). 



An isolated and aberrant form, yet presenting no definite 

 character which can be regarded as of generic value. It is the 

 only small species possessing a spined prothorax. 



I am indebted to Dr. Brauns for three examples from Drege's 

 collection, which he obtained from Mr. J. L. Drege of Port 

 Elizabeth. 



42. H. HUMERALis, sp. nov. (Plate I. fig. 10.) 



Long. 23-28, lat. 10^-12 mm. 



Head slightly convex, with scattered large punctures and pale 



