150 Mr. Kirby on some new genera and species 



Stirps. MELiToniiLuna. Latreille. 

 Family. TRicniADif:. Kirby. ■ 



Genus. Cuemastocuf.ilus. Knoch. *• 



Nasus magnus, dilatatus, apice rotundatus reflexus, arcuatus. ' 



Labrum sub nasi arcu absconditum, subtriangulare, concavum.'' 



Mandibula intus cornea, tridentata?: dentibus acutis : extra 

 lobo membranaceo paleaeformi rotundato. " 



Maxilla cornea : lobis unguiformibus ; interior! setis rigidis in- 

 striicto. ^ 



Palpi maxillares filifortnes, quadriarticulati : articulo primo 

 brevlssimo, extimo eloiigato cylindrico,? 



Labium magnum pelviforme : postice sinu exciso.'* 



Mentum labii partis posterioris pagina inferior. 



Palpi labiates triarticulati : articulis duobus primis brevissimis ; 

 extimo longissimo cylindrico. • 



Jntennce decemarticulata; : scapo magno compresso subtrigono : 

 secundo subgloboso ; tertio praecedente minori, sequentibus qua- 

 tuor magnitudine gradatim crpscentibus ; tribus ultimis lamellatis 

 capitulum subovatum formantibu;..'' 



Oculi hemisphaerici : cantho basi carinato apice depresso. ' 



Prothorax subquadratus ; angulis in dentem prominentibus.*" 



Prosternum conicum ante brachia erectum, apice oblique truu- 

 catum. 



Scutellum triangulare acuminatum. 



Elytra supra plana: lateribus deflexis ; humeris sublobatis. 



Pedes. Tibiae calcaribus 1, 2, 2. Cubitus apice bidentatus. 

 Tarsi filiformes : unguiculis aequalibus 2, 2, 2. 



Abdomen ano utrinque tuberculo spiraculifero instructo." 



•■' Mr. W. S. MacLoay's great Family of Cctoniadce constitutes, I think, a 

 Stirps rather than a Family, and appears to contain at least three larger groups, 

 eacii resolvable into various others — viz. Trichiadie, Cctoniadce, and Gymneti- 

 d<e. The first including Trichius F, Cremastocheilus, &c. ; the second those 

 Cetoniadcc without a lobed prothorax; and the third those in which that part 

 is lobed, and covers the scutellum. — *> As Knoch's Neue Beytrage is not a 

 common book, I have given from him in part the characters of Cremastocheilus. 

 ' Kiioch Neue Beytr. t. iii. f. 2. aa.—'^ Ibid.f. 3.—" Ibid.f. 4. —' Ibid.f. 9. 

 'Ibid, o, /5, 6. c.—^ Ibid. f. 7. This author calls it Catiniforme (platter- 

 shaped) ; but it resembles a basin, particularly a barber's basin. See also 

 Inlrod. to Ent. iv. t. xxvi. f. 35.—' Knoch Ibid. f. 7. cc— " lb. /. 8. — ' Introd. 

 to Ent. iii 365. n. 8. A.—" Plate Fig. aftc— " Ibid. d. 



