LIST OF HOMOPTEROUS INSECTS. 623 



almost vertically from the head ; shoulders rounded, not prominent ; 

 horns above very thick, almost erect, nearly contiguous at the base, 

 slightly diverging, prismatic, twisted, with three ridges on the inner 

 side towards the tips which are truncated and slightly hooked ; hind 

 appendage very slightly curved, extending much beyond the tip of 

 the abdomen, keeled, tapering from the base to the tip which is acute : 

 breast clothed with yellow hairs : abdomen black, clothed beneath 

 with white hairs: legs dark ferruginous : fore- wings lurid, narrow, 

 lanceolate, pitchy and punctured at the base ; veins ferruginous : 

 hind-wings almost colourless. Length of the body 3^ lines ; of the 

 wings 7 lines. 



a. Van Dieman's Land. Presented by the Kev. Augustus Beaufort. 



^ 58. Centrotus tenebrosus, Fem. 



Niger; prothorax ferr%igineo carinatus ; pedes ferruginei ; femora 

 nigra ; tibia suhdilatatcB ; alee aiiticcB suhfulvce^ basi picece ; 

 alee posticcB limpidce. 



Black, clothed with tawny hairs : head transverse, flat, im- 

 pressed, finely punctured, truncated in front, a little broader than 

 long, not much narrower than the fore-chest between the shoulders ; 

 face obconical, not half the length of the head : fore-chest rather 

 high, with a distinct ferruginous ridge, very slightly inclined back- 

 ward above the head ; shoulders rounded, not prominent ; horns 

 above conical, short, prismatic, very thick, diverging, slightly as- 

 cending; inner side broader than either of the other sides; length 

 of the horns nearly equal to twice the breadth of the chest between 

 them ; hind appendage stout, extending much beyond the tip of the 

 abdomen, hardly inclined upward, very slightly tapering from the 

 base to the tip which is conical : legs ferruginous ; thighs black ; 

 shanks slightly dilated : fore-wings lanceolate, slightly tinged with 

 tawny, pitchy and punctured at the base ; veins ferruginous ; four 

 discoidal areolets: hind-wings colourless. Length of the body 3 

 lines; of the wings 6| lines. 



a. Sierra Leone. Presented by the Rev. D. F. Morgan. 



59. Centrotus convergens, Mas. 



Niger ; pedes ferruginei ; femora nigra ; alee limpidce ; alee anticee 

 basi nigrce et punctatce. 



Black, clothed with tawny down : head and fore-chest thicklv 

 and rather coarsely punctured ; head short, transverselv subfusiforna 



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