146 HAUSTELLATA. — LEPIDOPTEKA. 



minutely sprinkled with fuscous, the hinder margin broadly black, posterior 

 thickly irrorated with fuscous (especially in the female), with the hinder 

 margin rather faintly bordered with black, sometimes with a chain of luteous 

 spots within': beneath tbe anterior wings are pale luteous, very thickly 

 irrorated with fuscous, especially towards the hinder margin and the costa ; 

 the posterior fuscous, with white radii: cilia of all black above, beneath 

 black, interrupted with luteous. 

 Caterpillar smooth, very slender, green-brown, with a longitudinal yellow stripe 

 on each side : it feeds on the broom (Spartium Scoparium), and reposes at full 

 length along the branches, unlike the generality of the Geometridae. 



This pretty little species is not uncommon among the high broom 

 in the vicinity of Birch-wood in Kent, the only locality in which 

 I have hitherto captured it ; it does, however, occur in other places : 

 during repose it carries its wings erect, and has considerable resem- 

 blance to a butterfly, which it also imitates by flying in the day- 

 time. 



Genus CLXIV. — Bupalus, Leach. 



Palpi extremely short, concealed within the hairs of the front, triarticulate, the 

 two basal joints robust, clothed with long hairs, the first reniform, much 

 longer than the two others united, the second short, subquadrate, terminal 

 minute, subovate, acuminate : maxillce very short. Antenna bipectinated in 

 the males to the apex, each joint producing an acute twig on each side, 

 ciliated within, and gi-adually shortening to the apex ; simple in the females : 

 head small : thorax squamous : wings erect during repose, entire, elongate, 

 with a flavescent ground, anterior in the males with a protuberance at the 

 base as in the foregoing genus, posterior beneath longitudinally banded with 

 white. Larva with 10 legs, smooth, not tubercular, reposes at full length ; 

 pupa folliculated. 



The genus Bupalus was established by Dr. Leach nearly twenty 

 years since — long anterior to the publication of Treitschke's arrange- 

 ment of the Geometridse — notwithstanding which the continental 

 naturalists have not thought proper, in accordance with their own 

 precepts, to adopt it ; but the type being found in Britain, I have 

 of course reverted to the original appellation : it is closely allied 

 to Speranza, with which it agrees in having the wings erect, 

 flavescent, with the anterior in the males having a protuberance 

 at the base, and the posterior longitudinally streaked with white ; 

 but the antennae are bipectinated to the apex : the females are 

 larger than the males. 



