Scarabajidae in the British Museum. 355 



dilatatis, apicem versus paullo latioribus, angulo externo paullo 

 producto, tarsorum articulo basali oblongo, ad apicem emarginato. 

 Long. 2£ lin. 



Hab. Amazons, Tapajos (H. W. Bates). 



This species has the form of the preceding species and 

 closely resembles it in every way. The colour, however, is 

 different, the head is smoother, and has no distinct line 

 dividing the clypeus from the forehead. The anterior tibias 

 are rather broad and somewhat angularly enlarged at the base, 

 as in the preceding species, and the intermediate tibiae are 

 almost similarly enlarged at the base, which is not the case in 

 0. constricta. The posterior tibiae are angularly enlarged at 

 the base ; the basal joint of the posterior tarsi is slightly 

 elongate, with its sides nearly parallel (PI. XI. fig. 9). 



Onthocharis simplex, sp. n. 



Elongato-oblonga, picea, virescens, nitida ; capite nigro-viridi, sub- 

 tiliter evidenter punctulato, elypeo piceo, antice leviter emar- 

 ginato, medio bidentato ; thorace nigro cyaneo-virescenti, sub- 

 tiliter punctulato, linea mediana fere nulla ; elytris nigro-piceis, 

 virescentibus, evidenter striatis, striis sat crebre evidenter punc- 

 tatis, interstitiis subtilissime punctulatis ; pygidio evidenter 

 punctato j pedibus piceis, tibiis posticis elongatis apicem versus 

 latioribus, tarsorum articulo basali subquadrato, ad apicem emar- 

 ginato, angulo externo producto. 



Long. 2|- lin. 



Hab. Santarem and Tapajos (H. W. Bates). 

 Var. Supra obscure viridis. 



Hab. Tapajos (H. W. Bates). 



The head is very distinctly punctured, with the punctures 

 slightly separated ; the clypeus is much more finely and less 

 distinctly punctured, the anterior emargination is wide and 

 not very deep, its outer angles acute, the middle teeth project 

 beyond the level of the angles of the emargination. The 

 thorax has the punctuation very fine but distinct, the punctures 

 moderately separated. The elytra have the striae very 

 distinct and evenly and rather strongly punctured, the punc- 

 tures separated from each other by spaces scarcely larger than 

 the punctures ; the punctuation of the interstices is extremely 

 fine and is not easily seen. The pygidium is very distinctly 

 punctured, the punctures slightly separated from each other. 

 The posterior tibiae elongate, widened towards the apex, with 

 the outer angle produced ; smooth above, except the line of 

 punctures ; the basal joint of the tarsi parallel-sided, emar- 



