KARTCIUS. — DICEROS. 71 



not tapei'iug behind, with the sides sinviated behind the shoulders. 

 Mesosternal process angular. 



d . Sides of the head above the eyes elevated into strong carina) 

 which unite posteriorly within the occipital cavity, so that tlie 

 head appears deeply hollowed out, and are produced anteriorly as 

 a pair of long, approximately horizontal, horns. Head deflected in 

 front so that the mouth is at right angles to the direction of the 

 horns. Anterior tibia rather slender but not elongate, armed 

 with two slight external teeth and two irregular internal ones, 

 and with the terminal spur short and strongly hooked ; middle 

 tibia slightly curved ; hind tibia straight and fringed at the inner 

 edge. Abdomen longitudinally grooved. 



2 . Unknown. 



Only one species of the genus is known. 



39. Narycius opalus. (Plate I, fig. 9.) 



Narycius opalus, Diq)., I. c; Westtv., Arc. Ent. i, 1841, p. 5, pi. 1, 

 iig. o ; id., op. cit. p. 114; Burm., Handb. Ent. iii, 1842, p. 171. 



Eosy green and shining, the cephalic horns, elytra, pygidium 

 and lower surface pinkish-testaceous with slight green reflections. 

 The surface is finely coriaceous, with the prothorax and scutelluin 

 irregularly punctured, the former having two pits near the hind 

 margin, before the scutellum, and the elytra are striate-punctate. 



cJ . The cephalic horns may attain two-thirds of the length of 

 the thorax and abdomen together. Their upper edges are nearly 

 straight and parallel, they expand slightly towards the end and 

 the tips are pointed and a little recurved. The prothorax is 

 rather inflated above and is broadest a little before the middle. 



Length 22-25 mm.; breadth 13 mm. 



Madras : Travancore ; Nilgiri Hills ; Mercara, Coorg. 



Type in coll. E. Oberthiir. 



Narycius olivaceus, Dup., which is said by Westwood {op. cit. 

 p. 114) to be the female of this beetle, seems to me to be really 

 that of Cyphonocephalus smaragdulus, AVestw., to M'hich I have 

 therefore applied Dupont's name. 



Genus DICEROS. 



Diceros, Lacord., Genera des Cobjopt. iii, 1856, p. 486. 

 Dicheros, G. cS- P., Monoyr. Cet. 1833, p. 40. 

 Mystroceros, Burm., Hundh. Ent. iii, 1842, p. 217. 



Type, Cetonia bicomis, Latr. {= D. pJagiatus, G. & P.), from 

 Timor. 



Range. India and the Malayan Region. 



Body very smooth, moderately convex, long and narrow, dis- 

 tinctly tapering from shoulder to apex. Eyes very prominent. 

 Clypeus moderately loug,not much dilated, sometimes with the sides 

 produced in the males into a pair of horizontal horns. Prothorax 



