CALLIDULA. 1 85 



by the older authors. Later writers have regarded them as 

 CastniidcB, Agaristidce^ Lithosiidce^ or as forming a Family allied 

 to the IIypsid(B, but Sir George Hampson places them between 

 the HepialidiB and the Drepanulidce, with which latter Family 

 he believes them to have some affinity. The Family has 

 recently been monographed and well illustrated by Dr. Pagen- 

 stecher of Wiesbaden. 



GENUS CALLIDULA. 



Callidula^ Hiibner, Verz. bek. Schmett. p. 66 (18 16?); 



Pagenstecher, Jahrb. Nassau. Ver. xl. p. 229 (1887). 

 Datanga, Moore, Descr. Ind. Lep. Atkinson, p. 21 (1879); 



Pagenstecher, Jahrb. Nassau. Ver. xl. p. 235 (1887). 



The genus Callidula includes a number of the smaller 

 species of the Family, expanding an inch or a little over, with 

 the fore-wings hardly longer than the hind-wings, the costa 

 strongly arched at the base, and the tip and hind margin 

 nearly rectangular ; the hind margin is slightly convex, and 

 the hind-wings are rounded, and hardly longer than broad. 

 The wings are brown above, with an oblique yellow band 

 00 the fore-wings. 



CALLIDULA PETAVIA. 



^Plate LXXXIX. Fig. 3.) 



rapiliopetavius, Cramer, Pap. Exot.iv. pi. 365, figs. C, 0(1782). 

 Polyommatus petavius, Godart, Encycl. Meth. ix. p. 676 



(1823). 

 Callidula pefavia, Pagenstecher, Jahrb. Nassau. Ver. xl. p. 



23O) pl- 3j ^igs. 3-6 (neuration) (1887). 



There are several closely-allied forms found in the Eastern 

 Islands, differing chiefly in the form and colour of the trans- 

 verse band on the fore-wings, and in the mottling of the 



