L98 Mr. J. S. Baly on the Phytophaga. 



body beneath covered with coarse adpressed hairs ; anterior femora 

 armed beneath with a stout spine. 



Fam. Chrysomelidae. 



Genus Ceralces, Gerst. 

 Pseudomela, Baly. 

 Ceralces ornata. 



C. ovata, valde convexa, fulva, nitida ; parapleuris, pedibus, antennis (basi 

 excepta), thoracis vitta lata antice posticeque abbreviate maculaque 

 utrinque, elytrisque nigris, his subcrebre punctatis, utrisque margine 

 exteriore apice valde dilatato, plagaque transversa magna discuidali 

 margine plerumque adfixa, fulvis ; scutello piceo. — Long. 3 lin. 



JIab. Lake N'Gami. 



Antenna? robust, shorter than half the body, subincrassate, three or 

 four basal joints fulvous ; head and thorax finely punctured ; scutellum 

 broad, more or less stained with piceous ; elytra scarcely broader than 

 the thorax, deeply punctured, the punctures on the inner disk indi- 

 stinctly arranged in numerous longitudinal stria?. 



Fam. Gallerucidae. 



Genus Diamphidia, Gerst. 

 Cladocera, Hope. 

 The insects known and described by Hope, Gerstaecker, and others, 

 under the above generic names, appear to form a single natural 

 genus, the species varying greatly in the degree of serration or even 

 flabellation of the antenna?, but agreeing in all their other characters. 

 I would divide the genus into three sections, formed on the degree of 

 variation of those organs. 



Sectio I. Antennis flabellatis in utroque sexu. 



IT. Antennis serratis aut subserratis in uno aut utroque 



sexu. 

 III. Antennis simplicibus. 

 Cladocera of Hope having been already used, Gerstaecker's name, 

 Diamphidia, must be adopted ; but from these authors having founded 

 their genera on the extreme states of the antenna?, either term is 

 characteristic only of a certain number of species in the genus. 



Diamphidia Bohemani. 



D. oblonga, convexa, fusco-alba; pedibus, antennis, verticis macula 

 utrinque, thoracis maculis quinque scutelloque nigris ; elytris siuberebre 

 punctatis, utrisque margine apicali, macula humerali, altera subapicali 

 fasciifique duabua macuheformibus (harum prima infra basin (maculis 



