with Characters of Six New Genera. 95 



Antennce 11 articulatae cylindricae, articulo 1"^° crasso^ 2^^ mi- 

 nimOj reliquis fere aequalibus^ extimo apice subconico. 



Labrum breve, margine antico valde inciso. 



Mandibulce cochleariformes, apicibus incisis. 



Maxillce breves bilobae, lobo superior! tenui recto. 



Palpi maxillares crassi et cornei, articulo 2^° longo, duobus ul- 

 timis brevioribus et fere oequalibus. 



Mentum parvum corneum antice angustum. 



Labium membranaceum subquadratum. 



Palpi labiales cornei, articulo 2^^ longiori, ultimo ovato. 



Elytra orbicularia ante medium umbone armata. 



Thorax rotundatus emarginatus. 



Prosternum sub ore protensum, intra pedes anticos productum 

 et contractum, canaliculatum. 



To this genus belong Cassida G-pustulata, lateralis, discors, 

 incequalis, reticularis, and discoidea of Fabricius, and also 

 (snea of Olivier, and at least 60 other species, many of which 

 are unpublished : several of them will be found ably described 

 by my friend Professor Germar of Halle, in his ^ Species Insec- 

 torum,^ a work not sufficiently appreciated in this country j 

 it was published in 1824 at Halle in Saxony. 



Dolichotoma^, Hope. PI. IV. fig. 2. 

 Type of the Genus, Cassida Chloris, Hope. 

 Antennce, 1 1 articulatae, articulis sex basalibus glabris, reliquis 



villosis, 1™° crasso, 2^° minimo, quatuor sequentibus 



parvis et aequalibus, reliquis multo longioribus. 

 Mandibulce parvae quadratag, extus tuberculo corniformi ar- 



matae. 

 Maxillce minutae subcoriaceae, lobis duobus rotundatis. 

 Palpi maxillares minuti, articulis subaequalibus, extimo conico. 

 Mentum parvum coriaceum. Labium subtrigonum setosum. 

 Palpi labiales minuti, articulis subaequalibus, ultimo ovato- 



conico. 

 Elytra orbicularia, ante medium angulato-elevata. 

 Thorax antice rotundatus, lateribus in dentem acutum pro- 



ductis. 

 Prosternum inter pedes anticos latius, subplanum. 



* From lo>iixfi; et ro^jj. 



