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 F ABR. (in part), Cuv., Larr. Head thick. Antennze 
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: Hudamus Borspuv., Pamphila Fasr, Hesperia 
Fasr., Syricthus Boispuv., Thymele Fasr., Zanaos Boispvuv. 
Sp. Hesperia malve Fasr., Raset, fns.1., Pap. diurn. Cl. 1. Tab. x. &e. 
Phalanx II. Posterior tibie spiny at the extremity or spurred 
alone. Four wings erect when at rest. Antenne always capitate 
or thicker towards the extremity. Caterpillar in the open air. 
Chrysalis most frequently naked and angulate. (Antenne 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 ozisci. Pupze smooth, rotundate. 
Polyommatus LATR., nob. Six ambulatory feet in both sexes. 
a) Labial palps elongate, produced in front of head. 
Myrina Farr. 
6) Labial palps short or moderate. 
Polyommatus Larr., Gopart. (Lycena, Thecla, Hesperia Fawr. 
Syst. G'lossat.) 
Sp. Polyommatus betule, Pap. betule L. Supp, Nederl. Ins. 11. Tab. XIt.; 
Panzer, Deutschl. Ins. Heft 21, Tab. 20;—Polyommatus Phleas, Pap. 
Phieas L., Rasex, Ins. 111. Tab. 45, figs. 5, 6, &e. 
LErycina LAtR: (Erycina, Nymphidium, Helicopis, Emesis Fasr. 
Syst. Glossat.) Anterior feet in males imperfect, not ambulatory, 
very short. 
Sp. Lrycina (Helicopis) Cupido, Pap. Cupido LL. Rasen, Ins. tv. Tab. m1. 
fig. 7; Cramer, Utl. Kap. Tab. 164, figs. D—G, from Surinam. All the 
5S 
species of this genus are from South America. 
