448 MR. M. JACOBY ON NEW [Mar. 15, 



anteriorly, first anterior tarsal joint greatly dilated and subquadrate 

 (male?), claws appendieulate. 



Two specimens of this interesting insect were kindly given to me 

 by Dr. Baden of Altona. 



Genus Colaspoides, Casteln. 



18. Colaspoides amazona, sp. nov. 



Oblong, convex. Underside, the legs, and antennse fulvous; above 

 bright metallic green, finely punctured. 



Length 3 lines. 



Hab. Maue, Amazons. 



Front of the head swollen, with a fine longitudinal central groove, 

 distinctly but remotely punctate, epistome broader than long, dis- 

 tinctly separated from the face by a deep groove, rugose punctate. 

 Labrum fulvous ; apical joint of the palpi and the jaws black. An- 

 tennas extending to one third the length of the body, entirely fulvous. 

 Thorax about three times as broad as long, narrowed in front, the 

 sides much deflexed anteriorly, surface irregularly and remotely 

 covered with larger and finer punctures, which disappear entirely 

 near the anterior margin. Scutellum subtriangular, impunctate. 

 Elytra nearly four times as long as the thorax, narrowed near the 

 apex, convex, rather regularly but finely punctate-striate, the punc- 

 tures not stronger than those of the thorax. Entire underside and 

 legs fulvous. 



The colour of the underside will distinguish this species from any 

 other described South-American form. 



Galerucid^. 



Neocharis, n. gen. 



Elongate, parallel ; head elongate, longer than broad, perpen- 

 dicular ; palpi elongate, subapical joint thickened at the apex ; 

 antennse filiform, joint 3 dilated, swollen ; thorax slightly broader 

 than long, surface with two round impressions ; scutellum trigonate, 

 convex ; elytra broader than the thorax, impressed below the base, 

 confusedly punctate ; legs slender, tibiae unarmed, claws appen- 

 dieulate ; prosternum invisible ; anterior coxal cavities closed. 



Type Neocharis fulvicollis. 



The above characters show that this genus must be placed 

 amongst Chapuis' 26th group, the Platyxanthidse, which contains 

 at present four genera. The present one is distinguished by having 

 the third joint of the antennse greatly dilated, probably only in 

 the male sex, this dilatation being transferred in the genus Doridea 

 and Platyxantha to the apical joints. 



19. Neocharis fulvicollis, sp. nov. 



Elongate, parallel. Black below ; head, antennse, and thorax 

 fulvous ; elytra finely punctate and obsoletely costate, bluish black ; 

 extreme base, anterior lateral and sutural margins, and two round 

 apical spots, fulvous. 



