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Dcscrijdion of a new species of Ptilium, discovered hij Mr. 

 Aug. Simso7i, in Tasmania ; by the Rev. A. Matthews, M.A. 



The beautiful insects desci-ibed in this paper were found by 

 Mr. Aug. Simsou, of Brighton, Tasmania, ah'eady known as the 

 discoverer of Amhlyojiimis Jansoni. They belong to the first 

 section of the genus Ptilium, which has hitherto only contained 

 the rare and elegant species. Ft. anguUcoUe and Pt. HaUdaii ; 

 from both of these the present species may be knoAvn by the 

 extraordinary sculpture of the thorax, which is traversed in 

 nearly straight lines by distinct rows of minute rings, touching 

 each other at their sides, so as to present the appearance of 

 chains. Two specimens only were found by Mr. Simson, 

 and forwarded to Mr. Janson, who very kindly presented them 

 to me. 



Ptilium Sinisoni, n. sj). 



L.c. Yl' liii' = 'GS-'To mm. Oblongo-ovale, laste castaneum 

 nitidum pihs aureis vestitum ; capite magno oculis magnis hand 

 prominentibus ; pronoto sat magno postice constricto, annulis 

 impressis, ordiuibus transversis sat remotis catenulatim dispositis 

 clcgantissime exsculpto, depression e magna ovali divergente basim 

 versus utrinque in disco notato ; elytris modicis ovalibus pro- 

 funde asperatis, apice valde rotundato ; pygidio sat longe exserto; 

 jiedibus atque antennis flavis. 



Caput sat magnum triangulare antice rotundatum, foveis 

 magnis umbilicatis interstitiisque nitidis ornatum. Oculi magni 

 baud prominentes. Antennae sat longa? robustge la^te flava?. 



Pronotum modicum, capite paulum lougius vix latius, ad 

 mediujn latissimum, lateribus antice rotuudatis postice levitcr 

 constrictis, foveis magnis profundis imibilicatis, sive annulis 

 jiarvis, ordiuibus transversis sat remotis catenulatim dispositis, 

 interstitiisque glabris nitidis ornatum, impressione longitudinjili 

 lata profunda antice divergente, e basi UK({ue ad medium exteiisA, 

 utrinque in disco notatum, margiue basaU leviter rotuudata 

 leviter reflexa, augulis fere rectis. 



