2£ 



less all trace of the neck. Of this group candata Fabr. (autumiwlis 

 Strom) is a typical member but we doubt very much if this European 

 species can be accredited to the North American fauna as has generally 

 been done up to the present. A very good figure of the c! genitalia 

 is given by Pierce (Gen. Brit. Geom. PI. 43), our own dissections 

 proving the accuracy of his figure ; we have found nothing among our 

 American material to correspond with this and while it is possible that 

 candata may be found in the far north just as is the case with 

 Dysstioma popidata L. which occurs in Alaska, we think it advisable 

 to drop the name for the present from our lists. 



As we have already noted the name autumiialis has been applied 

 in this country to a conglomeration of species for which there are 

 valid names, given principally by older authors ; we have already separ- 

 ated out fngidata \\\k. and now treat of pluviata Gn. 



HvDRioMENA PLUVIATA Gn. (divisaria W'lk. ) (PI. I\', Figs. 7. 8; 



PI. VI, Fig. 16; PI. IX, Fig. 1). 



Gucnee's diagnosis of this species is sufficient to determine the 

 form with considerable certainty; he mentions the sharper apex of 

 primaries, the more oblique first line, the bulging of the median space 

 in its central portion and the paler hind wings as compared with 

 cccndata, all of which points are found in a species which occurs com- 

 monly in the Catskill Mts.. N. Y. in June and July and extends through 

 the New England States into Maine and Canada; from our notes on 

 the type of divisaria Wlk., a sketch of the Uncus kindly made for us 

 by l\ir. A. W. Baker of the Ontario Agricultural College, Guelph and 

 a photograph of the type ( PI. VI, Fig. 16) we have little doubt that 

 Walker's name falls as synonym to Guenee's older name. Besides 

 the points already mentioned the species is characterized by its small 

 size (25-27 mm.), general dull color with considerable tendency to 

 brown or ruddy sufifusion, a rather prominent incurve in the first line 

 below the cell and a very strong inward tooth in the fourth line (post- 

 median) in the cell, these two last features being not entirely constant. 



The Uncus in shape forms a connecting link between the two 

 groups, the forks being not so deep as in cccndata, leaving a short 

 broad neck visible ; in a long series examined we found slight variabil- 

 ity present in the length of the bifurcations and consequently the 

 length of the neck, but our figure seems to be that of an average 

 specimen. 



