96 Rev. F. W. Hope's Observations on the Genus Cassida, 



D. Chloris, Hope, long. 7 lin., lat. 7 lin. Totum corpus supra vi- 

 ride, tliorace utrinque acute-angulato, convexo, impunctato ; 

 elytris in medio disci angulato-nodosis, subrugosis, lateribus 

 externis glabris ; corpus subtus atrum, elytris infra subcyaneis, 

 pedibus nigris plantisque ferrugineis. 

 Habitat in Insula Sancti Vincentii. 



This Cassida I obtained by purchase from the valuable col- 

 lection of the Rev. Lansdown Guilding. To this genus be- 

 long Cassida strigata of Schuppell^ and luctuosa of Olivier 

 and others. 



Selenis^, Hope. PI. IV. fig. 3. 



Type of the Genus, Cassida perforata of Fabricius. 



Antennceartlcnlis compressis extrorsum crassioribus^l"*^crasso, 

 2^^ minimo^ 5^^° longo gracilis 4*° breviori, 5^" et reliquis 

 longitudine decrescentibus, et gradatim crassioribus, ex- 

 timo apice acuto. 



Mavidibulce corneae multidentatae. 



Maxillce simplices, lobis rotundatis. 



Palpi maxillares V^^ minimo^ 2^° longissimo curvato_, apice la- 

 tiori, 3*^° et extimo aequalibus^ ultimo apice conico. 



Mentum parvum subquadratum. 



Labium parvum trigonum et setosum. 



Palpi labiates 1^° articulo brevi^ 2^^ elongato, 3*^° subsecuri- 

 formi. 



Elytra semicircularia ante medium angulato elevata^ humera- 

 libus angulis acute porrectis^ apice elytrorum acuminato. 



Thorax trigonus utrinque in spinam acutam productus. 



S. perforata I make the type of the genus. It appears 

 doubtful after examining many specimens of the above insects 

 if the perforations are not the result of accident ; no two spe- 

 cimens accord ; the holes under a lens seem irregularly worn, 

 the effect may be caused simply by attrition ; it may be re- 

 marked also that the elytra of the same insect differ consider- 

 ably ; the only published species besides the type is C. Spi- 

 nifex, Fab., which is considered only as a sexual distinction. 

 There are, however, in our English cabinets others which are 

 undescribed. 



* Selenis, from the Greek 2t^^j//j, signifying a crescent. 



