156 MODEUK SYSTEM. 



Sp. 1. Dem. atrkapillu. Body pale yellowish : head black : mouth and 

 thorax reddish: elytra very obsoletely striated: wings elongated; 

 epigastrium and base of the belly I'uscous. 



Lebia alricapilla. Latr. 



Inhabits beneath the bark of trees. 



Sp. 2. Dan. monostlgma. Body pale yellowish : head black : thoras 

 reddish : elytra obsoletely striated, towards their tips with one fus- 

 cous spot : wings abbreviated. 



Risophilus monostigma. Leach. 



Inhabits Europe amongst the roots of plants. It is very common near 

 Swansea. 



Genus 52. ODACANTIIA. Fubr., Lair., Bond., Clairv., Panz., 

 Leach, G>/ll. 

 Tarsi with their fotirth joint simple : head behind nuich produced : 



thof-ax oblong, subcylindric, narrower than the head. 

 Sp. 1. Odacuntha melaimra. 

 Attelabus mclanurus. Llnnc. 

 Inhabits marshes in Norfolk and near Swansea, 



Stirps 18. — Falpi very much elongated, tlic fourth joint with its apex 

 dilated: lip with the tooth of its notch bifid : lubrnin trilobate, the 

 middle lobe largest : inundibka very prominent: (/nu.rilhe with a very 

 thin perpendicular claw : tarsi with the fourth joint bitid : neck di- 

 stinct.) 



Genus 53. DRYPTA. Latr., Fabr., Bonel., Panz., Leach. Caka- 

 Bus. Russi, Marsh. Cicindela. 0/iv. 



Thorax cylindric : head narrowed or lengthened behind : mandibles 

 much elongated and very jirominent : exterior maxillary and labial 

 palpi terminated by a large nearly obconic joint, (maxillary ones 

 nmch lengthened :) Up elongate linear, with two auricles. 



Sp. 1. Dri/p.emarginata. Blue, punctate, villose : mouth, antenna", and 

 feet red: thorax with an impressed longitudinal line; elytra with 

 punctin-cd stria-; apex of the first and middle of the third joint of 

 the antenna^ brown. 



Drypta emarginata. Fabr. Latr. Gen. Crust, el Insect, i. 197. ted). 7. 

 Jig. 3. Leach, Edin. £Hn/i7. ix. 81. Carabus chrysostomus. Mursham, 



Inhabits Europe. In Britain it is rare; but has been taken near Hast- 

 ings and Eaversham. 



Fam. III. DvTiciD.E. Leach. 

 IIvDROCANTiiAUi. LatrciUe. 

 Dyticus. Geoffroi/. 

 Dytiscus. Linnc, &c. 



All the Dyticidae inhabit th-e water, both in the state of larA'je 



