Mr. T. V. Wollaston on the Coleoptera of St. Helena. 315 



being the more shining and deeply punctured of the 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 straightly truncate (or more rounded-off separately) 

 at their apex, but likewise concealing altogether the propygi- 

 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 M. 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 which 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 Scarabceus eudoxus ; and I am 

 informed by Mr. C. O. 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, subqtiadrato-ovatus, rufo-piceus, subopacus ; capite in- 

 sequaliter punctato, fronte fere impunctata ; clypeo triangulari 

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

 thorace magno, convexo, grosse sed leviter punctato, angulis an- 

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

 dato, in medio subangulato, falvo-ciliato ; elytris subquadratis 

 sed pone medium latiusculis, apice recte truncato-abbreviatia 

 (anguHs suturalibus subrectis), propygidium subtriangulare (mu- 

 cronibus transversis dense asperatum) vix occultantibus, grosse 

 sed leviter submalleato-punctatis (punctis nullo modo in seriebus 

 longitudinalibus, linea levi suturali excepta, dispositis) ; pedibua 

 robustis, fossoriis, parce fulvo-pilosis. 



Mas clypeo postice tuberculo medio magno conspicue cornuto. 



Fcem. adhuc latet. 



Long, Corp. lin. 8-9|^. 



Amongst 15 examples, collected by Mr. Melliss and belong- 

 ing to the present genus, there are three which are rather 

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

 with the obscure frontal tubercle developed into a distinct 

 corneous process, so that my first impression was that they 



23* 



