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IV. Descriptions of some new or imperfectly known Species of Bolboceras, Kirby. 



By J. O. Westwood, Esq., F.L.S. 



Read June 6, 1848. 



X1AVING in two previous communications described a number of new species of Atlvy- 

 reus, ebiefly from South America, and given a synopsis of the Australian species of Bolbo- 

 ceras, I shall on the present occasion continue the descriptions of the species of the latter 

 genus, especially such as are natives of the East Indies. 



With the view of showing the generic as well as sexual distinctions existing between 

 the Bolbocerata and Odontcei, I have given figures of the head and front of the prothorax 

 of both sexes of Odontceus mobilicomis and Bolboceras JEneas, Pz. (quadridens, Dftschm.) 

 from Austria, together with the side of the head (showing the eyes), maxillae and fore 

 femora of both these insects. (Tab. IV. fig. 1 & 2, with the details.) 



1. Bolboceras Cyclops, Eabr. Ent. Syst. i. p. 15 ; Oliv. Ent. i. 3. 1. 15. f. 140 ; ferrugi- 



neus, clypeo antice carina transversa tuberculisque duobus acutis instructo, vertice 

 linea tenui parum elevata inter oculos, pronoto utrinque excavatione profunda sub- 

 rotunda antice cornu acuto alteroque minori versus medium armato ; spatio inter 

 cornua intermedia piano punctato; antice linea semicirculari parum elevata cincto 

 canali vix distincto longitudinali ante scutellum terminato, elytris punctato-striatis 

 striis tenuibus, tibiis anticis 8-dentatis. (Mas.) — Long. corp. lin. 9. (Tab. III. fig. 15.) 



Variat mas magnitudine cornuum capitis et pronoti necnon profunditate excavationum hujus lateralium. 



Hab. in Java, Assam, et India centrali. Muss. Hope (olim Lee) et nostr. {Hearsey). 



Fig. 15, insectum magnitudine paullo auctum ; 15 'a, caput et prothorax lateraliter visa. 



Obs. The figure and description are made from the original specimen described from 

 Lee's Collection by Eabricius, now in the Cabinet of the Rev. E. W. Hope. 



2. Bolboceras grandis, Hope MSS. ; rufo-castaneus, capite dentibusque tibiarum anti- 



carum nigricantibus, clypeo carina tenui semicirculari, vertice carina transversa inter 

 oculorum partem anticam, pronoto convexo carina semicirculari tuberculisque duo- 

 bus versus marginem anticum lineaque tenui longitudinali impressa media in parte 

 postica. (Ecem.) — Long. corp. lin. 9. (Tab. IV. fig. 3, caput et prothorax supra visa.) 

 Hab. in India orientali ? In Mus. D. Hope. 



Caput supra sub lente granulosum, mandibula dextra extiis ante apicem incisa, pronotum antice puncta- 

 tum, postice laeve nitidum, versus angulos posticos utrinque pariim impressum. Elytra tenuissime 

 punctato-striata, striis ad apicem elytrorum extensis. Tibiae anticas 7-dentatae. Corpus subtus con- 

 color, pilis fulvis hirtum. 

 Individuum e Calcutta vidi (pro fcemina sp. praecedentis, B. Cyclops, e Parisiis, a Domino Chevrolatio 

 mihi transmissum) in quo carina antica clypei magis recta et transversa evadit, lineaque impressa 



D 2 



