SYRICHTHUS MAI/WE. 209 



between leaves of the food-plant. The imagines have 

 six perfect legs adapted for walking. The following 

 artificial key to the species of the Hesperildce may be 

 found useful : 



A. Sexes similar ; ground-colour black or brown. 



1 . Black with white spots -5. malvce. 



2. Black with yellow spots C. palcemon. 



3. Dark brown, with darker brown marking, 



and a few small white spots N. tages. 



B. Male distinguished from the female by a 

 black bar on the fore-wings ; ground-colour rich 

 orange-brown. 



a. Small ; without hooks to antennae. 



1. Colour uniform; bar on male, long, con- 

 tinuous, curved, distinct ; under- side of 



antennae, pale buff, not dark H. thauinas. 



2. Colour uniform; bar on male, short, 

 broken, usually indistinct ; under-side of 



tips of antennae black H. lineola. 



3. With a fan-like arrangement of light 

 markings on fore- wings H. actceon. 



b. Larger; with hooks to antennae. 



1. Under-surface yellowish, almost uniform H. sylvanus. 



2. Under-surface darker, with square white 

 markings H. cot/ima. 



Syrichthus, Bdv. 



The genus Syrichthus is represented by the single 

 species following : 



S. malvae, Linn., S. alveolus, Hiibner (Grizzled 

 Skipper) (Figs. 244 and 245), is a fairly common little 

 butterfly in grassy spots near woods in England and 

 parts of Scotland. When on the wing it is very difficult 

 to follow, and so does- not fall an easy prey to the 

 pursuer. Should a capture be effected, it must be 

 remembered that a Skipper is not like an ordinary 

 butterfly, and no attempt should be made to kill it by 



