408 CLASS VIII. 



by DALMAN under Cydimon, forms the type of a separate sub-genus Urania 

 or Thaliura DUNCAN. 



The affinity with Castnia, especially with Coronis and Agarista, cannot 

 be mistaken ; and some writers, amongst whom is WESTWOOD, place Urania 

 in the former family. In those species, however, which I have examined, 

 I can discover no retinaculum. 



Hesperia FABR. (in part), Cuv., LATH. Head thick. Antennae 

 remote at the base, capitate. Palps short, with second joint ex- 

 tremely scaly forwards, and third joint short. Upper wings erect 

 only when at rest, or expanded wings patent. Caterpillar often 

 living in leaves webbed together. 



Sub-genera : Eudamus BOISDUV., PampJiila FABR., Hesperw, 

 FABR., Syricthus BOISDUV., Thymele FABR., Tanaos BOISDUV. 



Sp. Hesperia malvce FABR., ECESEL, Ins. i., Pap. diwrn. Cl. n. Tab. x. &c. 



Phalanx II. Posterior tibiae spiny at the extremity or spurred 

 alone. Four wings erect when at rest. Antennae always capitate 

 or thicker towards the extremity. Caterpillar in the open air. 

 Chrysalis most frequently naked and angulate. (Antennae in all 

 approximate at the insertion.) 



I. Third or last joint of labial palps most distinct, naked or 

 slightly covered with scales or hairs. Claws of tarsi small. Cater- 

 pillars oval, resembling onisci. Pupae smooth, rotundate. 



Polyommatus LATR., nob. Six ambulatory feet in both sexes. 



a) Labial palps elongate, produced in front of head. 

 Myrina FABR. 



6) Labial palps short or moderate. 



Polyommatus LATR., GODART. (Lyccena, Thecla, Hesperia FABR. 

 Syst. Glossat.) 



Sp. Polyommatus betulce, Pap. betulce L. SEPP, Nederl. Ins. in. Tab. xn.; 

 PANZER, Deutschl. Ins. Heft 21, Tab. 20; Polyommatus Phlceas, Pap. 

 Phlceas L., E(ESEL, Ins. in. Tab. 45, figs. 5, 6, &c. 



Erycina LATR. (Erycina, Nymphidium, Helicopis, Emesis FABR. 

 Syst. Glossat.} Anterior feet in males imperfect, not ambulatory, 

 very short. 



Sp. Erycina (Helicopis) Cupido, Pap. Cupido L. ROGSEL, Ins. IV. Tab. in. 

 fig. 7 ; CRAMER, Uitl. Kap. Tab. 164, figs. D G, from Surinam. All the 

 species of this genus are from South America. 



