238 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 5 



Male genitalia: as figured (pi. 29, figs. 1-2). 



Determination checked by comparison with the types in the U.S.N.M. 

 This species, like most of the other species formerly placed in the genus 

 Perigea, will now fall in the genus Platysenta following McDunnough 

 (1938). P. ruthae should be placed near concisa Walker, from which it 

 differs in appearance most strikingly by the dark hind wing. It is also 

 larger, grayer, and more contrastingly marked. The male genitalia are 

 also close to those of concisa Wlk., differing principally in the details of 

 shape of the clasper and the armature of the vesica. 



General distribution: endemic. 



Harrisonia williamsi Schaus 



Zoologica, 5: 36-37, pi. 1, fig. 7, 1923. 

 Academy Bay, Indefatigable Island; January 20, 1934; 



J. S. Garth. Zc^ 2$ 



South Seymour; January 14-18, 1932; J. S. Garth. 1$ 



South Seymour ; February 18, 1933 ; J. S. Garth. 1 cT 2$ 



Determination checked by comparison with the types in the U.S.N.M. 



Male genitalia: as figured (pi. 30, figs. 1-2). 



Female genitalia: (pi. 30, fig. 3) Sclerite of segment VIII fused 

 ventrally and also fused with the sclerotinized dorsal wall of the ductus 

 bursae. Ductus bursae with only one supporting sclerite, this sclerite dor- 

 sal but curving around the lateral sides almost to meet the midventral 

 line. Bursa copulatrix bilobed anterior to entrance of ductus seminalis, 

 one lobe thickly covered with microtrichiae (shown by stipple), the other 

 lobe bare. 



No position beyond subfamily was given for this genus in the original 

 description. In Hampson's artificial table Harrisonia will key to Rhodoe- 

 cia Hmpsn., which, however, in this case does probably indicate, at least 

 in general, the proper position for the genus. The type of genitalia is 

 that found in a considerable number of genera of "lower" Amphipyrinae 

 including the Pyrrhia section. 



General distribution : endemic monotypic genus. 



Prodenia eridania form normal linea (Fabr.) 



Charles Island, elev. 1300 ft. ; 1939 ; E. A. Conway. 2cr 



This is the first record of this species from the Galapagos Islands. De- 

 termination checked by male genitalic slide to slides of North American 

 specimens of this species. 



General distribution : southern United States to Argentina. 



