286 curculionidjE. 



Genus EMPERORRHINUS. 



Emperorrhimis, JNlarshall, Bull. Eiit. Kesearch, vi, pt. 4, 1916, 

 p. 365. 



Type, Emperorrhinus defoliator, Mshl. 



Rostrum stout, longer than the head and continuous with it ; 

 the mandibles very unequal, the left being much the larger and 

 projecting (when closed) considerably beyond the gena3 ; in 

 conformity with this, the left geua is also more developed and 

 projects further beyond the scrobe than does the right one, the 

 rounded apical excision of the rostrum being therefore asymmetrical ; 

 the scrobes dorsal and apical, short and curving abruptly inwards, 

 so that the space between them is scarcely half the width of the 

 forehead ; the process covering the condyle of the antenna 

 convex, testaceous and shiny, superficially appearing as though it 

 might be the condyle itself; mentum small, subcircular and 

 beai'ing a trausverse row of four bristles. Antenna; long and 

 slender, the scape curved and reaching the middle of the pro- 

 thorax, the two basal joints of the funicle elongate, the remainder 

 longer than hroad. Protliorax truncate at the base, the anterior 

 margin laterally sloping backwards from above downwards ; the 

 anterior coxae quite close to the front of the prosternum. Elytra 

 much broader than the prothorax and with prominent shoulders. 

 Abdomen with the intercoxal process ogival, segment 2 slightly 

 longer than 3 and 4 and separated from 1 by a deeply sinuate 

 incision. Legs slender, all the femora witli a single small tooth, 

 the corbels of the postei-ior tibiae open, the tarsal claws free. 



lianr/e. Northern India. 



This genus is nearly related to Mt/llocerns, with which it agrees 

 in most characters, but it should readilj^ be distinguished by the 

 remarkable asymmetry of the rostrum, a character which I have 

 never previously observed in any adelognathous Curculionid. 

 Other points which distinguish the genus from Mylhcerus are, 

 the projection of the closed mandibles well beyond the apices of 

 the gense and the proximity of the front coxae to the anterior 

 margin of the prosternum. 



257. Emperorrhinus defoliator, Mshl. 



Eynperorrhiniis defoliator, Marshall, op. cit. p. 366, fig. 1. 



Black, densely clothed with mingled black and bright metallic 

 green scaling ; bead and rostrum green; ])rothorax green, with a 

 broad central black stripe ; elytra variable, but with the green 

 and black scaling fairly equally distributed in alternating small 

 subquadrate patches on the dorsal intervals ; there is often a 

 somewhat large black patch near the base on intervals 3 to 6, and 

 occasionally the black scales greatly predominate. 



Head finely striolate longitudinally, the forehead twice as 

 broad as the space between the scrobes, the eyes moderately 

 convex. Rostrum Avith the left side (excluding the mandible) 



