302 PHYTOPHAGA — CASSIDIDAE. 



wrinkled, dull, shoulders rather broader than thorax, very- 

 prominent. Common. C. equestris, Fab. 



b. Body almost circular ; length 2 lines. 



Convex. Upper-side green or yellowish-green ; under- 

 side (except abdomen) black ; abdomen and legs yellow. 

 Posterior angles of thorax right angles, but rounded at 

 apex ; elytra deeply punctured, interstices smooth, shiny, 

 side margin divided from disc by a row of deep punctures, 

 shoulders not broader than thorax. Not common. 



C. hemisphaerica, Herbst. 



LONGICOENIA. 



A, Last joint of palpi pointed at apex ; anterior tibiae with 

 an oblique groove on inner-side. 



Ligula leathery or horny, rarely membranous, without 

 paragiossae ; maxillae with two lobes ; labrum separate, 

 horizontal ; head usually vertical in front, forehead form- 

 ing a right, or acute angle with vertex ; antennae inserted 

 far from mandibles, in an emargination of eyes ; pronotum 

 scarcely ever separate from sides of prothorax ; mesonotum 

 with organs of stridulation ; socket holes of anterior coxae 

 closed behind. Lamiidae. 



S. Last joint of palpi truncate at apex ; anterior tibiae 

 without oblique groove on inner-side. 



a, Ligula generally membranous ; pronotum very rarely 

 separate from sides of prothorax ; anterior coxae very 

 variable. 



Maxillae with two lobes ; labrum not soldered to clypeus, 

 never vertical compared witli latter; mesonotum nearly 

 always with organs of stridulation. Ccra')iihycidae. 



J). Ligula horny ; pronotum separate from sides of pro- 

 thorax; anterior coxae strongly transverse. 



Inner lobe of maxillae very rarely distinct ; labrum 

 soldered to clypeus ; antennae usually inserted near base 

 of mandibles before eyes ; mesonotum wdthout organs of 

 stridulation ; socket holes of anterior coxae nearly always 

 widely open behind. Prionidae, 



