with Characters of Six New Genera. 95 



Antennae 11 articulatae cylindrical articulo l mo crasso, 2 do mi- 

 nimo, reliquis fere aequalibus, extimo apice subconico. 



Labrum breve, margine antico valde inciso. 



Mandibulae cochleariformes, apicibus incisis. 



Maxillae breves bilobae, lobo superiori tenui recto. 



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

 timis brevioribus et fere aequalibus. 



Mentum parvum corneum antice angustum. 



Labium membranaceum subquadratum. 



Palpi labiates cornei, articulo 2 do longiori, ultimo ovato. 



Elytra orbicularia ante medium umbone armata. 



Thorax rotundatus emarginatus. 



Prosternum sub ore protensum, intra pedes anticos productum 

 et contracture canaliculatum. 



To this genus belong Cassida 6-pustidata, lateralis, discors, 

 inaequalis, reticularis, and discoidea of Fabricius, and also 

 cenea 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 are unpublished : several of them will be found ably described 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 ; 

 it was published in 1824 at Halle in Saxony. 



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

 Type of the Genus, Cassida Chloris, Hope. 



Antennae, 11 articulatae, articulis sex basalibus glabris, reliquis 

 villosis, l mo crasso, 2 do minimo, quatuor sequentibus 

 parvis et aequalibus, reliquis multo longioribus. 



Mandibular parvae quadratae, extus tuberculo corniformi ar- 

 matae. 



Maxillae minutas subcoriaceae, lobis duobus rotundatis. 



Palpi maxillares minuti, articulis subaequalibus, extimo conico. 



Mentum parvum coriaceum. Labium subtrigonum setosum. 



Palpi labiates minuti, articulis subaequalibus, ultimo ovato- 

 conico. 



Elytra orbicularia, ante medium angulato-elevata. 



Thorax antice rotundatus, lateribus in dentem acutum pro- 

 duces. 



Prosternum inter pedes anticos latius, subplanum. 



* From odhiyfii et ro/xq. 



