CERTAIN BUTTERFLY GENERA — FIELD 111 



as through the middle, and deeply incised both dorsally and ventrally 

 from one-half to one-third its entire length. The aedeagus is thus 

 similar to that of T. xanthodice and T. distinda of group E of Tatochila. 

 [The five groups of Tatochila are defined in a second paper, in press.] 



Female (fig. 36) with ductus bursae very similar to Tatochila, 

 differing chiefly in the reduced sclerotization, having a very narrow 

 and faint ribbon-like plate immediately anterior to ostium and either 

 lacking other sclerotization or having a very small ventral plate 

 anterior to this ribbon-like one. Eight tergite and sternite as in 

 Taiochila. 



Habitus: Wings above in both sexes with gi'ound color white and 

 with the silvery sheen at base extending throughout most of the cell of 

 the forewing, otherwise similar to Tatochila, having the discal spot 

 present on forewing on both surfaces and having the black sagittate 

 markings in apex of forewing with a submarginal series of spots or a 

 solid band inward from these markings. Undersurfaces with ground 

 color of hindwing and apex of forewing yellow with veins in these 

 areas overlaid with fuscous. Costa of hindwing orange and with a 

 white spot at end of cell on this wing. 



Ureta (Bol. Mus. Nac. Hist. Nat., vol. 26, pp. 66, 67, 1955) estab- 

 lished a new subgenus, Chionanema, thereby dividing the genus 

 Hypsochila. However he did not describe the typical subgenus except 

 by inference. He included in Hypsochila (Chionanema) a single species, 

 known from a single specimen. The characters he selected for this 

 subgenus do not seem to me to be of more than specific value. How- 

 ever, I am retaining this subgenus until I am able to examine the 

 species upon which it was established and ascertain if it displays 

 characters of subgeneric value. 



Hypsochila (Hypsochila) Ureta 



Reference and type species as given above under the genus. 

 For reasons given above, this nominotypical subgenus is not here 

 assigned characters. 

 Species: 



1. Hypsochila {Hypsochila) argyrodice (Staudinger), Hamburger magalhaensische 



Sammelreise, vol. 2, No. 6, pp. 14-17, fig. 11, 1899 (Tatochila). 



2. Hypsochila (Hypsochila) wagenknechti Ureta, Rev. Chilena Hist. Nat., vol. 41 



(1937), pp. 278-283, pi. 12, fig. 3cf , 49, text fig. 39, 19ZS (Tatochila) . (Note: 

 Although this name was originally treated by Ureta as a "form" he later 

 elevated it to full specific rank; it is clear from his original description that 

 his term "form" comes within the meaning of the term subspecies, so that hia 

 name is here treated as being available as of the original date.) 



3. Hypsochila (Hypsochila) galactodice Ureta, Bol. Mus. Nac. Hist. Nat., vol. 26, 



pp. 65-66, pi. 2, fig. 3, 1955. 



46366&— 6£ 



