110 LLOYDS NATURAL HISTORY. 



Stoll has figured a larva not unlike that of Doratifera rul~ 

 nerans (Lewin) (see Plate XCII , figs. 4-6, for the latter) 

 as that of Agyrta midlia^ but almost certainly in error. 



Consequently, Duncan referred A. micilia to the genus 



Limacodes. 



GENUS ISANTHRENE. 



Isanthrene, Hiibner, Verz. bek. Schmett. p. 125 (1822 ?); But- 

 ler, Journ. Linn. Soc. Lond. Zool. xii. p. 374, pi. xxvii 

 fig. 4 (neuration) (1876). 



Glaucopis, group 8, Isanthrene, Walker,, List Lepid. Ins. Brit 

 Mus. i. p. 154 (1854). 



The transparent-winged Zygcenidce, which are very numerous 

 in Tropical America, and many of which much resemble 

 Hymenoptera, were classed together by Walker under the 

 genus GlaucopiS) Fabricius, which, however, is an inadmissible 

 name, as it had been previously used by Gmelin for a genus of 

 Birds. Walker also employed the genus Euchroinia^ Hiibner, 

 to include the bulk of the tropical Zygcenidtz, with opaque 

 wings. Both these magazine genera he divided into numerous 

 named groups, most of which have been raised to generic rank 

 by Dr. Butler, and other recent authors. 



The species of Isanlhrem are among the largest of the 

 transparent Zygcenidce^ many of the species measuring two 

 inches across the wings. The wings are transparent, except 

 on the borders, and strongly tinged with yellow, and the abdo- 

 men is long, moderately stout, nearly naked, and cylindrical ; 

 the antennae are also long, and are slightly pectinated ; the 

 legs likewise are long and stout. 



Some of the transparent-winged Zyg&nidce have extremely 

 small hind-wings, which increase their resemblance to Hymen- 

 vptera, or even 



