PIERINAE: KUHYAIUS rilll.ODICE. 1117 



Mr. Edwards at one time thought these variations possibly indicative of specific 

 dift'erences (Can. ent., ii : 179), and asserted that they produced equivalent variations 

 in the imago, explaininc: in his latest publication that those with distinct blacli spots 

 beneath the stigmatal stripe produced tlie deepest colored butterflies. But Mr. Uiley 

 informs me that in lS7Ci lie obtained caterpillars witli distinct spots beneath the stig- 

 matal stripe and others wit liout thoni from eggs laid by tlie same mother. So, too, 

 caterpillars of E. eurytlicme with and otliers without the pale supralateral line were 

 obtained by Mr. Fletcher and myself from eggs laid by the same parent. 



Chrysalis (84 : ,".4. ,"..") ; 87 : 4). Grass green throughont, vermiculate with yellowish 

 white over the upper surface of the thorax and all of the abdomen so as to give a pale 

 pea-green efl'ect; the frontal prominence, a dorsal line over the whole body and a nar- 

 row, faint, suprastigmatal band free of these markings ; on the wings the yellow tinge 

 is more distinct and a narrow, yellowish, stigmatal b.and passes from tip to tip, inter- 

 rupted at the prothorax ; front of head and linear appendages grass green ; nervures 

 of tlie wings tipped minutely with fuscous and a fuscous dot at apex of cell; there is 

 a lateroventral row of round fuscous spots on the fourth to sixth abdominal seg- 

 ments; and on the posterior p.art of the same segments, midway between this row and 

 stigmatal line, a row of Ijlack dots, one to a segment. Length, 111 mm. ; breadth, 5 

 mm. ; height, 6 mm. 



Geographical distribution (25:7). This is a characteristic but- 

 terfly of the Alleghaiiian faiuia, covering the country from the Atlantic 

 coast to the Rocky Mountains, but also spreading north and south far 

 into the neighboring faunas. In the north it is usually common, if not 

 abundant, in all the lower half of the Canadian fauna. The northernmost 

 localities from which it has been reported are Nova Scotia "very common" 

 (Doubleday, Jones), Cape Breton (Graham Bell), Cacouna, Tadousa, 

 "common" (Saunders), Godbout, on the north shore of the St. Law- 

 rence, "rare" (Corneau), Anticosti (Couper), Quebec, "very abundant" 

 (Bowles), Ottawa (Billings), Collingwood, Bruce Mines and St. Joseph's 

 Island, "plentiful," and Sault St. Marie, "excessively abundant" (Be- 

 thune), Duluth, "common" (Osten Sacl<en), and the Lake of the Woods 

 (Dawson). Mr. Lyman reports that he has seen a specimen from as far 

 north as Fort Carleton on the Saskatchewan. It is far more abundant in 

 the east than on the western prairies, but it occurs through the valley of 

 the upper ^Mississippi and is reported from such western localities as the Big 

 Horn Mountains (Edwards), Dakota and Montana (Morrison, Allen), 

 Fort Bridger, Wy. (Osten Sacken), and Colorado (Mead, Reakirt*), and 

 from various localities in Iowa where it is nowhere very abundant. The 

 specimens from Osage Co., Mo., in the Museum of Comparative Zoology 

 came from near the southern boundary of the species, which toward the east 

 is limited by about tiie northern boundary of the Gulf states. Dr. Bean, 

 according to Mr. Uhler, has found it at a height of about 3000 feet above 

 the base of Big Butte, one of the Iron or Smoky Mountains of Tennessee. 

 It has been taken in abundance on Elk River, W. Va. (Edwards), and 

 has been found in North Carolina (Hentz), Georgia, "rare" (Abbot) 



•The specimens from Colorado are now re^'aided l)y Edwards as distinct. 



