INTRODUCTORY PAPKRS ON LKPIDOPTERA. 125 



wings, and with more or less of the hind wings and of the 

 inner margin of the fore wings filled up either with greenish 

 white or with some shade of tawny or fulvous, and generally 

 marked with rows of black spots. Occasionally the pale 

 portion of the wing is beautifully shaded with purple ; and 

 the sexes usually differ considerably, the males being often 

 fulvous or tawny, while the females are greenish white. 

 These insects generally average about three inches in 

 expanse. 



Some of the largest and handsomest species among the 

 genera most resembling Aryijnuin belong to the genus 

 ClothiUa, which is almost confined to Cuba, Haiti, and 

 Central America. They expand about four or five inches, 

 and are tawny, with rows of large black spots towards the 

 hind margins ; and one species, T. Thirza, Hiibn., has deep 

 red markings towards the base. On the under side of the 

 hind wings they are dark brown, without silvery spots, but 

 marked with many slender undulating white lines. 



The genus Terinos, from the Malay Islands, expands 

 about two and a half or three inches, and is dark brown, 

 more or less suffused or striped with rich purplish blue. The 

 tips of the fore wings are prominent, but obtusely rounded, 

 and the hind margin is suddenly concave below tliem. The 

 hind wings are nearly square, slightly denlated, and with a 

 more or less prominent projection at the outer angle ; 

 towards the hind margin they are generally varied with 

 white or yellow. 



Cirrochroa is another East Indian and Australian genus, 

 with less prominent tips, below which the hind margin slopes 

 gradually to the hinder angle. The hind wings are slightly 

 and regularly dentated and curved. The wings are tawny, 

 more or less bordered with black, especially towards the tip 

 of the fore wings; the females of some species are brown. 

 There are generally two dentated subn)arginal black lines, 

 and a third near the middle of the wings; outside the latter 

 (which is often silvery on the under side) runs a row of 

 brown dots. These insects usually expand from two to three 

 and a half inches; but the smallest, C.fasciata, Feld., from 

 Borneo, expands only one inch and a half, and differs much 

 from any other species, being brown, with a broad ochreous 

 band running from the middle of the fore wings to the inner 

 margin of the hind wings, beyond which are two rows of 

 ochreous lunules, the innermost becoming a stripe on the 

 hind wings. 



