142 



as minuta shows these veins stalked as in Eupithecia and differs fur- 

 ther from the characterization of Gymnoscclis in its frontal structure 

 we believe this genus should be dropped and minuta included in 

 Nasusina, the spurs of the hind tibiae having already been shown to 

 be a variable feature although in this one species apparently constantly 

 single. In the three species noted the palpi are short, rather laterally 

 compressed with the second joint heavily tufted with scales on its 

 dorsal surface. 



The following species, included up to now under Nasusina, all 

 agree in showing a cone-like protuberant front projecting between 

 the eyes with closely appressed scaling and with the under surface 

 more or less hollowed out so as to partially contain the roUed-up 

 proboscis ; the palpi also differ from the type found in Nasusina in 

 being more compressed laterally with much closer appressed scaling 

 and with little or none of the dorsal tufting found in both that genus 

 and in Eupithecia; on the other hand at the base of the palpi on the 

 under side the scaling is more prominent ( PI. XV, Fig. 6 ) : 



gypsata Grt. 



leucata Hist. 



remorata Grossb. 



discoidalis Grossb. 



artestata Grossb. 



desperata Hist. 



mellisa Grossb. 



insipidata Pears. 

 Of these eight species the only one unknown to us and of which 

 we do not possess a specimen compared with the type is artestata 

 Grossb. and we presume that Grossbeck was correct in placing it, 

 although the type at Philadelphia must be examined to make this cer- 

 tain ; opinata Pears, we believe better placed in Eupithecia; the front 

 is only very slightly bulging but has a scale tuft which probably misled 

 Pearsall into placing the species in Nasusina; the palpi are also dor- 

 sally tufted and the species would in some ways appear to lead over 

 from Nasusina to Eupithecia; nivcifascia Hist, is distinctly a Eupi- 

 thecia and superficially somewhat similar to perbrunneata Tayl. 



As it seems advisable to separate this group from the main bulk 

 of the genus Eupithecia we propose for it the generic name Proeella, 

 designating gypsata Grt. as type; the main characters of the genus 



