New Genera and Species of Phytophaga. 253 
transversim sulcato, disci medio vitta elevat4 instructo, rufo- 
fulvo, apice basique medio nigris; elytris apice minute 
serratis, lateribus minus rectis. 
Long. 23 lin. 
Hab. North America. 
Its larger size, broader and less cylindrical form, together with 
the transverse thorax, will distinguish this species from Ch, Ariadne, 
the other North American species with which it may be confounded ; 
the two strongly resemble each other in colour. 
Collection of Rev. H. Clark, and my own. 
Sp. 5. Charistena basalis. 
Elongata, filiformis, subcylindrica, nigra, nitida; thorace con- 
vexo, fulvo, basi transversim impresso, crebre profunde 
punctato, vitta centrali obsolete elevata, impunctata; elytris 
elongatis, parallelis, apice distincte serratis, cyaneis, utrisque 
plaga basali parva fulva. 
Long. 34 lin. : 
Hab. Amazons. Collected by Mr. H. W. Bates. 
Entirely similar in form to Ch. ruficollis, quite three times its 
size, its thorax rather longer and more convex; the apex of the 
elytra is however subacutely rounded. 
Collection of H. W. Bates, also in my own cabinet. 
Sp. 6. Charistena Deyrollei. 
Elongata, subcylindrica, dorso subdepressa, nigra, nitida; ely- 
tris nigro-czruleis ; thorace, femorum anticorum basi, elytro- 
rumque vitta lata laterali, vix pone medium abbreviata, pal- 
lide fulvis; thorace sat convexo, basi transversim depresso, 
profunde punctato. 
Long. 24 lin. 
Hab. Upper Amazons, Columbia. 
Elytra parallel, their apex finely but irregularly toothed. 
I have named this pretty species after my friend M. H. Dey- 
rolle of Paris, who is making a special study of the Phytophaga. 
Collections of H. Deyrolle, H. W. Bates, A. Fry, and my own 
cabinet. 
Sp. 7. Charistena bellula, 
Minus elongata, minus parallela, nigra, nitida; facie inferiori 
femorumque basi obscure fulvis; thorace vix transverso, 
leete rufo-fulvo, profunde sed subremote punctato, convexo, 
