CLASS'v. INSECTA. 211 



LeplLira TiKjaisitor. Linni. Rhagium Indagator. Fabr. 

 Inhabits England, but is very rare. 



Fam. XLIV. Criocerid.^. Leach. 

 L'p not cordtform : maxUUc with their external division not resembling 

 a two-jointed palpus : iody elongate : Morrt.r cylindric or quadrate: 

 7iuiudibles bifid or notched at their extremities. 



Genus 239. DONACIA. Fabr., Puyk., Hoppe, Oliv., Latr., Leach. 

 Leptura. Linn., Marsh. 

 Antenn<B with elongate-cylindric joints, those of the base obconic : eyes 

 not notched : abdomen elongate, triangular: hinder thighs thick. 



* Hinder thighs dentated. 

 Sp. 1. Don. micans. 



Donacia micans. Hoppe, Leach. Leptura micans. Marsh. 

 Inhabits aquatic plants. 



** Hinder thighs simple. 

 Sp. 2. Don. simplex. 

 Leptura simplex. Marsh. 

 Inhabits aquatic plants. 



Obs. — Donacia Zosteri Fabr., and Equiseti, both of which have lately 

 been taken in Britain, constitute the genus Macroplea of Hoffmansegg. 



Genus 240. CRIOCERIS. Geof., Oliv., Lam., Leach. 

 Antenna moniliform, with the exception of the basal joints which are 



globose : ej/es notched : neck distinct : abdomen quadrate. 

 Sp. 1. Cri. merdigera. {PI. 2. jig. 14.) 

 Crioceris merdigera. Latr., Leach. Lema merdigera. Fabr. Auche- 



nia merdigera. Marsh. Chrysomela merdigera. Linn. 

 Inhabits the white lily, 



Fam. XLV. Chrysomelid.(E. Leach. 



Chrvsomelix.e. Latreille. 



Lip not cordiform : maxilla with their external division resembling a 

 biarticulate palpus : body more or less ovoid or oval : thorax trans- 

 verse, or not longer than broad. 



Stirps 1. — Palpi very small : antenna inserted near each other between 

 the eyes, at a distance from tlie mouth : body shield-shaped : thorax 

 semicircular. 



Genus 241. CASSIDA of authors. 

 Antenna thicker towards their extremities, their base concealed by the 



thorax: body nearly orbiculate. 

 Sp. 1. Cass, equestris. 

 Cassida equestris. Fabr., Payk., Panz., Latr., Leach. Cassida viridis. 



Marsh., Illig. 

 Inhabits the Mentha sylvesfris. 



o2 



