and Species of Goleoptera. 357 



infra nigro-picco, abdomine confertim punctulato ; femoribus anti- 

 cis infra in medio dente valido, aliquando minore, armatis ; tarsis 

 subtus rufescenti-pilosis. Long. 10-11 lin. 



Hah. Sylhet. 



Cyphaleus Mastersu, 



C. late ovatus, supra splendide cseruleo-violaceus, aureo-viridi mar- 

 ginatus ; capite sat crebre punctulato ; prothorace parum convexo, 

 at lateribus explanato, angulis anticis spinoso-productis, dorso foveis 

 octo vel decern impresso, duobus in lineam mediam, utrinque tri- 

 bus vel quatuor dispositis ; scutello triangular! ; elytris prothorace 

 multo latioribus, modice convexis, humeris late oblique truncatis, 

 lateribus pone bumeros parallelis, apicem versus rotundatis, apici- 

 bus spinosis, singulis punctis maguis subseriatim locatis (seriebus 

 circa 5-6), interstitiis subtiliter sparse punctulatis, epipleuris 

 aureo-viridibus ; corpore infra femoribusque atris, nitidis ; anten- 

 nis, tibiis tarsisque nigro-piceis, nitidis. Long. 9 lin. 



Hob. Queensland (Port Dennison ; Gajndah &c.). 



The genera of the CyphaleinaB are, with two or three excep- 

 tions, feebly separated from one another : the above has the 

 sculptured elytra of Cyphaleus] but the prothorax is expanded 

 at the sides, as in GhartopteryXj from which it differs in the 

 two penultimate joints of the antennae being transverse (as in 

 Cyphaleus) and the anterior humeral angle rounded. I name 

 this handsome species after Mr. Masters, than whom none has 

 been more successful in collecting the animal productions of 

 Australia. 



^thyssius eros. 



^. nitidissime igneo-rufus aureo lavatus, antennis nigris, supra 

 disperse pilosulus ; capite prothoraceque sat remote pimctatis ; 

 scutello subquadrato, angulis posticis rotundatis ; elytris striato- 

 punctatis, interstitiis convexis, parce punctatis, in certo situ quasi 

 transversim plicatis ; corpore infra iridescente ; pedibus rufo-brun- 

 neis, pubescentibus. Long. 6 lin. 



Hah. New South Wales. 



Differs from.^. viridis, Bois. [Atractus)^ in its pubescence, 

 the sculpture of the elytra, the punctui-es in the striae being 

 smaller, less marked, and the transverse intervals between 

 them less distinctly separated by well-defined bars, which are 

 only seen in certain lights, and by the penultimate joint of the 

 posterior tarsi being longer and its sides parallel nearly their 

 whole length. I have previously proposed ^thyssius for 

 Atractus, Lac, which is the name of an Hemipterous genus. 

 A. virescens and A. columhinus, Bois., are supposed to be 

 varieties of ^. viridis, which varies from green to red and 



