208 LLOYD'S NATURAL HISTORY. 



The antennae are short, with a well-marked club (an unusual 

 character in this Family), and the palpi are long, pointed, and 

 hairy rather than scaly. The claws of the tarsi are without 

 appendages, as in Euryimis. 



The fore-wings are rather long and somewhat narrow ; the 

 hind-wings are somewhat rounded. The sub-costal nervure of 

 the fore-wings is three-branched (not four-branched, as Dr. 

 Butler states), the second branch being emitted close to the 

 end of the cell ; the upper discoidal nervule separating from 

 the sub-costal some distance beyond the cell. The lower disco- 

 cellular nervule is strongly angulated outwards in both the fore- 

 and hind-wings, the upper median nervule being strongly 

 arched. The pre-costal nervure of the hind-wings is rudi- 

 mentary. 



The type, Nathalis u>/e, Boisduval, which inhabits the 

 Southern United States, is a small Butterfly, expanding about 

 an inch across the wings. It is of a sulphur-yellow colour 

 above, with the fore-wings black at the tip, and with a black 

 spot towards the hinder-angle ; the hind-wings are also some- 

 times marked with black marginal spots. The under side is 

 greenish, dusted with black. The larva is at present undes- 

 cribed. 



GENUS EURYMUS. 



Eurymus, Swainson; Horsfield, Cat. Lepid. E. Ind. Mus. 

 pp. 129, 134 (1829); Swainson, Zool. 111. (2) ii. pi. 60 

 (1831?); Scudder, Butterflies of East. U. S. p. 1096 

 (1889). 



Colias, pt. Fabricius, in Illiger, Mag. Insekt. vi. p. 284(1807); 

 Latreille, Enc. Meth. ix. pp. 10, 89 (1819); Boisduval, 

 Spec. Gen. Meth. i. p. 634 (1836); Doubleday, Gen. 

 Diurn. Lepid. p. 72 (1847); Butler, Cist. Ent. i. pp. 35, 

 43 (1870); Schatz, Exot. Schmett. ii. p. 68 (1866). 



