I 



Scarabaeidae in the British Museum. 361 



The female has a short conical tubercle on the vertex of the 

 head, which is rather more triangular than in the male. The 

 thorax is almost vertically declivous in front (with a round 

 impression on each side of the declivous part), the ridge 

 formed by the declivity produced forwards and quadrituber- 

 culate, the middle pair of tubercles in advance of the lateral 

 ones and moderately widely separated. 



Pinotus torulosus, Esch. 



Mr. B. Nevinson has pointed out to me a series of speci- 

 mens which he has separated from the ordinary form of P. 

 toru'osus on account of their smaller size and convex shining 

 interstices to the elytra. In the British Museum collection 

 there is a similar specimen from Mendoza. 



P. toriclosus is described from '^ Conception," and the length 

 given is 7^ lines ; the interstices of the elytra are " erhaben, 

 gewolbt, glatt, glanzend." 



Von Harold states (' Abeille,' 1869, p. 133) that he has 

 seen authentic specimens of P. Valdivianusy Phiiippi, and that 

 they do not differ from P. torulosus type. It would be inter- 

 esting to have this observation confirmed. I have not seen 

 Philippi's description. 



P. punctatissimus^ Curtis, $ , has the interstices of the 

 elytra slightly convex and somewhat dull, which is the more 

 common form. One specimen in the Museum collection has 

 the interstices almost llat. 



Pinolus biconiis, sp. n. 



Oblongus, sat parallehis, ater, opacus ; capita rugoso, antice rotun- 

 dato ad apir-em vix sinuato, genis antice prominulis, prope mar- 

 ginem anticiim cornu erecto sat valido, parallelo, ad apicem truu- 

 cato instructo ; thoracc haud iDunctato (augulo laterali punctato 

 excepto), antice pone oculos exciso, lateribus antice obliquis, ante 

 medium in lobo productis, ad medium sinuatis, disco in proccssu 

 subhorizontali sat crasso producto, processu apicem versus parallelo, 

 apice truncato; elytris striis subnitidis subtilissime punctulatis 

 vix impressis ; tibiarum posticarum calcari apicali ud apicem 

 exciso. 



Long. 9 1 lin. 



JIab. Peru {IViamm). 



This species, in its dull surface and curious lateral margins 

 of the thorax, has so much in common with P. diabolicus, 

 Harold (Deutsch. ent. Zeitschr. xix. p. 211), with which it 

 was received, that at lirst I was indincd to think it niigiit hi'. 



