76 



than we find in nemesis, resembling in this respect virginietisis Gray ; 

 from this latter species, however, with which it also agrees in size and 

 wing shape, it is readily separated by the fringes which in I'irginiensis 

 (PI. XII, Figs. 11-13) are entirely dusky whilst in our Texan species 

 they are checkered with white at apex and inner angle of primaries; 

 the ground color is a much deeper, duller brown and the black row 

 of dots on the underside to which we have already referred is indis- 

 tinctly geminate whilst in virginiensis it is single and very sharply 

 defined. The species can hardly be laverna G. & S. which is dififeren- 

 tiated from virginiensis by the more pointed primaries, nothing, how- 

 ever being said concerning the fringes; as Stichel (Gen. Insect. Riod. 

 p. 161 ) makes it a race of virginiensis we presume the fringes are simi- 

 lar in both forms. We cannot, either, make it coincide with nilus Feld. 

 or argyrodines Butl. which Stichel separates apparently in his prelim- 

 inary remarks (1910, Berl. Ent. Zeitsch. LV, pp. 17, 18) and in the 

 revision proper (1. c. p. 162) treats as synonyms, giving Texas as one 

 of the localities, possibly in error ; certainly Godman and Salvin's fig- 

 ures of argyrodines (Biol. Cent. Am. Rhop. Ill, PI. 44, Figs. 5, 6) do 

 not apply to our species. 



We propose therefore the name Calephelis perditalis (PI. XII, 

 Figs. 5-7) for this species, our type series (6 $ , 6 9 ) having been 

 captured at San Benito, Texas, in the latter portion of July ; we have 

 also specimens from Brownsville, taken in October, which would indi- 

 cate at least two generations yearly. We offer the following key to 

 the N. American species of this puzzling group: 



A Size large, over one inch borealis G. & R. 



A' Size small, less than one inch 



B Fringes entirely dusky virginiensis Gray 



B' Fringes checkered at apex with white 



C Primaries of S rounded as in 9 . .perditalis B. &McD. 



C Primaries of S more pointed than in 9 



nemesis Edw. {australis Edw.) 



