144 Lord Walsingham's revision of the 



Hypoclopus, n. g. 



(unoxxonos = bidden or furtive). 

 Type. Hypoclopus griseus, Wlsm. 



Labial palpi, $ , overarching the thorax ; all the joints roughly 

 clothed ; J short, porrected. Antennae pilose, slightly serrated 

 towards the apex. Fore wings with the costa rather straight, the 

 apical margin oblique, somewhat attenuated towards the base ; 

 apical vein forked. Hind wings slightly wider than the fore wings ; 

 uncus single. 



The necessity for establishing this genus rests upon 

 the wide difference in the structure of the palpi from 

 those of Neolophus, with which in all other respects it 

 perfectly agrees. It differs from Ccenogenes in its 

 antennae, and from Urbara, Walk., in the absence of an 

 erect crest at the top of the head, as well as in the form 

 of the wings. 



Hypoclopus griseus, n. s. (PL VII., figs. 2, 2a, 2ft). 

 Palpi, $ , overarching the thorax and reaching to its posterior 

 margin ; J short, standing straight forward from the head about 

 1 mm. Antenna; dull greyish ochreous ; 3 compressed, ovate, 

 pilose, having a serrate appearance owing to lines of partially 

 raised scales on their anterior sides; J simple. Head, thorax, 

 and palpi with an equal admixture of hoary and greyish fuscous 

 scales. Fore wings greyish fuscous, profusely sprinkled with 

 hoary scales, which predominate in a patch below the middle of 

 the fold ; a sprinkling of dark fuscous scales is also noticeable, 

 especially along the costa, where they form a series of small dots, 

 and at the outer end of the cell, where they are concentrated into 

 an ill-defined dark fuscous patch ; a smaller dark fuscous patch 

 occurring beyond the middle of the fold. In the fringes patches 

 of hoary and greyish fuscous scales alternate with each other. 

 The apical vein is forked. Hind wings reddish brown; fringes 

 cinereous. Abdomen cinereous ; lateral claspers attenuated in the 

 middle and widened posteriorly, their ends rounded above, obtusely 

 angulated below. The uncus is bent over and is single, but a 

 supplementary point with a double stem in the form of the lower 

 mandible of a bird, coming from below it, reaches nearly as far as 

 the uncus itself. Exp. al. 20 mm. 



Three males and one female received from Morrison, 

 collected in Arizona. This species may be distinguished 

 by its almost square-ended lateral claspers, and by the 

 length of the opposite branch of the uncus, which, 



