Mr. T. V. WoUaston un f/ie Co/eojjtera of St. Helena. 315 



being the more sliining and deeply punctured of tlie two, by 

 its clypeus being •wider, less margined at the sides, and less 

 recurved at the tip, and by its elytra (some of the punctures 

 of which have a faint tendency to arrange themselves in very- 

 obsolete, evanescent, longitudinal, flexuous grooves) being not 

 only less straighthj truncate (or more rounded-oft* separately) 

 at their apex, but likemse concealing altogether the j)ropygi- 

 dium — which is straight and transverse (instead of being tri- 

 angular), and so destitute of asperities (there being traces of 

 only a very few transverse plaits, or short, broken file-like 

 ridges, in the centre behind) that I am exceedingly doubtful 

 whether the insect is able in reality to stridulate. 



The ^[. eudoxus seems to be thoroughly indigenous to the 

 island, and found principally in cultivated regions of a rather 

 high altitude — according to Mr. Melliss, by whom the 12 ex- 

 amples from Avhich the above diagnosis has been compiled 

 were collected. It appears, however, to have been brought 

 from St. Helena many years ago ; for it is cited in Dejean's 

 Catalogue under the name of Scorahcpus eudoxus ; and I am 

 informed by Mr. C. 0. Waterhouse that there are two speci- 

 mens (likewise " unquestionably males ") in the British Mu- 

 seum which had been placed aside as in all probability the 

 type of some undefined group, and which are evidently con- 

 specific with the present insect. 



22. Mellissius adumhratus^ n, sp. 



M. crassus, subquadrato-ovatus, rufo-piceus, subopacus ; capite in- 

 ajqualiter punctato, fronte fere impunctata ; clypeo triaugulari 

 apice truucato et valde recurvo, lateribus grosse marginato ; pro- 

 thorace magao, convexo, grosse sed leviter punctato, augulis an- 

 ticis porrectis, acutis, posticis rotundato-obtusis, ad latera rotun- 

 dato, in medio subangulato, fulvo-ciliato ; elytris siibquadratis 

 sed pone medium latiusculis, apice recte truncato-abbre\'iatis 

 (angulis suturalibus subrectis), propygidium subtriangulare (mu- 

 cronibus trausversis dense asperatum) vix occultantibus, grosse 

 sed levitt^r submalleato-punctatis ( punctis nullo modo in sericbus 

 longitudinalibus, linea levi sutur:di exccpta, dispositis) ; pedibus 

 robustis, fossoiiis, parce fulvo-pilosis. 



Mas clypeo postice tuberrulo medio mngno conspicue <^ornuto. 



Fiem. adbuc latet. 



Long. Corp. lin. S-Og. 



Amongst 15 examples, collected by ^Ir. Melli.ss and belong- 

 ing to the present genus, there arc three which are ratiier 

 larger and nearly opake (the remainder being shining), and 

 with the obscure frontal tubercle developed into a distinct 

 corneous process, so tliat mv first iuipressiun was that thev 



2:j* 



