BY THE REV. T. BLACKBURN. 565 



equal, — iu four the width greater than the length, — and in two 

 the length greater than the width. Beyond this I cannot find any- 

 constant distinction ; of the two narrow specimens one certainly 

 has the gular sulcus feeble, but the other has not ; some of the 

 wider examples have the teeth of the submentum no larger than 

 one of the narrower examples, and so on. 



As there is, I think, no doubt that some at least of the wider 

 examples before me would be referred by Mr. Bates to H'l/j^ocilibe, 

 and, as I cannot separate the ten examples into two genera, I must 

 refer them all to Hypocilibe on the supposition that either I have 

 not seen a real Onosterrhus or the distinction of the genera 

 cannot be maintained, — in which latter case of course the name 

 Bypocilibe would have to be dropped. I should have little 

 hesitation in accepting the former alternative were it not for a 

 remark by Mr. Bates himself (E.M.M., Aug., 1873), on the 

 paucity of material for the study of Onosterrhus and the possi- 

 bility of modifications being required when more specimens could 

 be examined. One character puzzles me extremely, and that is the 

 relation between the metasternum and its episterna. In some 

 examples the suture between these is straight and in others more 

 or less curved ; this does not appear to be sexual nor even specific ; 

 in examples with glabrous tibiae and short anterior tarsi both 

 forms are to be found, and in one of the two examples described 

 below as H. lugubris (which I am convinced are one species) the 

 suture is less straight than in the other. 



Hypocilibe major, sp.nov. 



Sat late ovata ; sat convexa ; sat nitida ; nigra, antennis palpis 

 pedibusque picescentibus, tarsis subtus et tibiarum apice 

 summo auricomatis ; capite et segmentis ventralibus (sub 

 lente forti) subtiliter minus crebre, prothorace vix manif este, 

 segmentis ceteris (his minute coriaceis) haud, punctulatis ; 

 prothorace quam longiori fere duplo latiori ; postice quam 

 antice plus dimidio latiori, antice profunde arcuatim emar- 

 ginato, latitudine majori pone medium posita, lateiibns postice 

 leviter siiiuatis, angulis omnibus sat acutis; elytris prothorace 



