214 Mr. W. Bainbridge's Observations on 



XXXIII. Observations on Osmoderma and some new Species 

 of CetoniadiE. Sy the late Mr. William Bainbridge, 

 Curator to the Entomological Society. 



[Read March, 1840.] 



Observing in Mr. Hope's magnificent collection of Lamellicorn 

 beetles various undescribed insects, I expressed a wish to be 

 allowed to describe some of them ; and if the present paper 

 meets with the approbation of the Society I shall gladly attempt 

 other groups, as I feel persuaded, from the rapid increase of the 

 collection above named, it is impossible for one individual to 

 attempt to describe the novelties daily accruing, and I the more 

 readily undertake the task as I am aware that Mr. Hope is 

 actively engaged in describing other groups, as well as employed 

 in finishing the last Fasciculus of the Coleopterist's Manual, which 

 will, I have no doubt, shortly make its appearance. 



Osmoderma of Lepeletier and Serville. 

 The type of the genus Osmoderma is the Scarahceus Eremita of 

 Linnaeus. Messrs. Gory and Percheron, in their Monograph of 

 Cetoniadce, have mentioned only three species.* 



Osmoderma, 

 Section 1. — Elytris parum scabris, subrugosis sub lente minutis- 

 sime punctulatis. 



Sp. ] . Osmod. Eremita .... Linnaeus .... Europe, 



2. Eremicola . . Knoch North America. 



* [This is hardly correct, for Messieurs Gory and Percheron (Mon, Cet, p. 77, 

 and ph 8, fig. 2), in their description of Osmoderma scaler, have confounded two 

 species together, considering them as sexes of one insect ; describing as the female 

 a specimen (evidently the one contained in the collection of Mr. Hope from Lee's 

 Cabinet, labelled Africa trquinoiiali, which was sent over to Paris by Mr. Hope 

 for their examination) as distinguished by " I'absence des rebords du chaperon, 

 et par ses carenes dorsales, peu senties; sa couleur, du moins dans Vindividu que 

 nous avons sous les yeux, est plus foncee." Their figure 2 is evidently taken 

 from this individual, as it agrees exactly with Mr. Plope's specimen in size and 

 shape. The sexes of the true North American species differ however in the wider 

 form of the clypeus and thorax, both sexes however agreeing together in colour as 

 well as in having the front of the clypeus elevated ; one sex moreover has the 

 elytra evidently narrowed in front. Mr. Kirby appears to have described the Osm. 

 scabriim under the name of Trichius {Gynmodus) fuveatus in the Fauna Boreali 

 Americana, p. 140, where he has described another species under the name of 

 Trichius (O'jmiwdus) rugosus. — J. 0. H'.] 



