and Species of His p idee. 381 



The present remarkable genus stands^ as far as my 

 knowledge extends, alone amongst the great tribe of 

 Phytopkaga, in wanting the labial palpi. I myself possess 

 two species of the genus which both agree entirely in 

 habit and external characters, but although I have sub- 

 jected the specimens to a most careful examination under 

 a powerful lens (the two-thirds of Ross) , I cannot detect 

 the slightest trace, either of the palpi themselves, or of 

 their points of insertion; in fact, the basal segment of 

 the ligula, on which the labial palpi are always inserted, 

 appears itself to be obsolete, its place being occupied by 

 the large apical segment. The genus ought to follow 

 Nepius. 



1. Chceridiona vtetallica. 



Anguste cuneiformis, convexa, subtus picea, nitida, 

 Eeneo-micans, supra cupreo-aurea ; thorace profunde et 

 rude rugoso-foveolato, disco viridi-metallico ; ely tris api- 

 cem versus paullo ampliatis, angulo postico obtuso, utris- 

 que quadricostatis, costa secunda ante apicem tertiaque 

 in medio et ante apicem interrupta, interspatiis profunde 

 biseriatim foveolatis, vitta lata communi a basi fere ad 

 apicem exteusa viridi-metallica, margine apicali fulvo; 

 antennis rufo-fulvis, apice nigris; pedibus fulvis, tarsis 

 piceis. 



Long. 2^ lin. 



Hah. — India. 



Head coarsely and deeply punctured ; front produced 

 anteriorly between the eyes into an angular projection, 

 the apex of which is extended downwards to form a lon- 

 gitudinal ridge, which runs along the face as far as the 

 upper border of the clypeus ; four outer joints of the an- 

 tennae black. Thorax subcylindrical, scarcely longer than 

 broad, sides parallel, bisinuate, anterior angles notched, 

 bidentate, surface very deeply and coarsely punctured, 

 rugose. Elytra broader than the thorax, sides naiTOwly 

 margined, slightly dilated towards the posterior angles, 

 the latter obtuse; each elytron with four strongly- raised 

 longitudinal costee, the first and fourth entire, extending 

 nearly to the apex, the second entire for the greater part 

 of its course but interrupted some distance below its 

 middle, the third, which arises on the humeral callus, 

 broadly interrupted in the middle and again just before 

 reaching the apex. 



