72 CETOXIIX^. 



rather convex above, with the posterior margin trisinuate and the 

 liind angles produced backwai'ds and ahiiost concealing the meso- 

 sternal epiiuera. Scutelluiu rather short, with the sides sinuated 

 and the apex blunt. Lateral margins of elytra distinctly sinuated 

 and the apical angles acutely produced. Lower surface of body 

 smooth, with the mesosternal process long, narrow and strongly 

 curved. Legs rather short, but not stout, with the tarsi rather 

 thick and closely articulated. Mandible with the chitinous outer 

 lobe rather short and pointed. Maxilla not long, terminating in 

 two hooked teeth internally and a tuft of hairs externally. Mentum 

 emarginate in front. 



cJ . Tlie abdomen is deeply grooved throughout its length, and 

 the front tibi;x? are simple or have only a very feeble upper tooth. 



2 . The front tibiae are bidentate. 



Ken ^^ ^^^^' ^p<^<^^<^s. 



1 (2) Clypeus armed in front with a pair 



of horns or processes, long in 



the male dives, Westw., p. 72. 



2 (1) Clypeus unarmed. 



■'{ (6) Forehead bearing a single median 



lobe. [p. 74. 



4 (5) Prothorax entirely black roepstorffi, Wood-Mason, 



T) (4) Prothorax red and black chiUlreni, Westw., p. 74. 



6 (3) Forehead without a median lobe. 



7 (lO) PronotiHii very smooth. 



8 (9) Elytra black, each Avith a yellow 



patch bimacula, Wied., p. 75. 



9 (8) Elytra yellow, with narrow black 



margins cnvera, Newm., p. 76. 



10 (7) Pronotum strongly punctured .... gracilis, Jans., p. 76. 



40. Diceros dives. (Plate I, hg. 10, $ , and tig. 11, j .) 



TIeterorrhina dives, IVestiv.^^ Arcana Eni. i, 1842, p. 134, pi. 33, fig. 5. 

 iMystroceros diardi, Burm., Handb. Ent. iii, 1842, p. 217. 

 Gnathocera macleay, (i. S,- P., Monoyr. Cet. 1833, p. 129, pi. 19, tig. 2. 

 (5") Heterorrhina mitrata, Wall.,^ Tra7is. Ent. Soc. Lond. (3) iv, 

 1868, p. 528, pi. 11, fig. 1 (n. syn.). 



Brilliant green with rosy reflections and with the clypeal pro- 

 cesses, antenna?, tibiic and tarsi (except the inner edges of the 

 front tibia) and the extreme ends of the hind ones), a large heart- 

 vsliaped median ))atch extending from base to apex of the pronotum, 

 the anterior jjart of the elytra and a broad apical patch reaching 

 the margins of the sides and middle, black. The basal and median 

 part of tht» i)ygidium, parts of the front and middle femora, the 

 coxa), sides of the sternum and abdomen, and the basal part of 

 each ventral segment are deep mahogany colour. 



The surface is very highly glazed, and the shape elongate-oval 

 and not very convex. The head is slightly punctured, strongly 

 excavated, bicornute in front, with a laminar horizontal process 



