37 



Gipnnoplennis cMchlcus (n. sp.) : Niger, opaciis, antemiis flavis, 

 articuKs tribus hasalihus picescmtihus ; clypeo bidentato; prothorace lateri 

 bus medio rotundati» , anfjulis posticis obtusis; elytris subtiliter striatis 

 — Long. 13 — 14 mill., lat. fprothoracis medio) 9 mill. 



Celebes (Wallace!). 



Tlio thorax lias tlie sides rouiided aiul prominent in the middlo, 

 tlien narrowed to the base but scarcely at all sinuale, it is opaque 

 but its surface lias distinct scattered larger punctures. The elytra 

 are very opaque an(i finely striate, tlie «triae when higlily magnified 

 are scen to be formed by elongate punctures. 



Two specimens, t and $. The extroniity of the apical spur in 

 the 5 is broad and rounded at its inner angle, the tubercle at the 

 extremity of the inner margin is but little developed; the apical teeth 

 of the tibiae are approximate , the two upper ones separated from 

 each other in the male specimen by two, in the $ by one minute 

 Serratien. The species though closely allied to G. caJcar is conside- 

 rably smaller and the sculpture of the thorax is not quite so obsolete. 

 I have also a specimen from Sola which I consider to bo a variety 

 of G. celebicus, of which it has just the size and form, but the sculp- 

 ture of its thorax is nearly as obsolete as in G. calcar. 



Gyrnnopleurus rudis (n sp.) : Niger, opacus, antemiis flavis, basi 

 picescente; capite thoraceqtie fortiter ptmctatis, hoc angtilis posticis obtusis ; 

 elytris subtiliter striatis, omnino opacis. — Long*. 14 mill. 



Lombock (Wallace!). 



This species is distinguished from the others here described by 

 the stronger punctuation of its head and thorax. The thorax has the 

 sides rounded in the middle, then distinctly narrowed towards the base. 



Of this species I have also seen but a single specimen, it is a J, 

 but the teeth and spurs of the tibiae are much worn down , so that 

 I cannot speak with certainty as to their form. 



Obs. The above described 9 species of Gymnopleurus are ex- 

 tremely closely allied to one another, the structural characters and 

 general form being very similar in all the species. G. striatus and 

 aethiops will be readily distinguished by their shining thorax; matirus 

 and stipes by the angulated sides of the thorax; and rudis by the 

 coarser punctuation of the thorax. G. plarms, cahar, dubius and cele- 

 bicus are und(»ubtedly very closely allied to one another, and I should 



