236 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 5 



on outer side and row of 7 moderate spines along inner side; mid and 

 hind tibiae with moderate sex tufts on basal half ; tarsi with only 3 rows 

 of spines, none on the dorsal half of the segments. Abdomen almost 

 smoothly scaled, no special hair tufts (sexual). 



Maculation: Head and palpi uniform dark brown. Thorax concol- 

 orous with head, the individual scales lighter basally. Legs light brown, 

 tibiae heavily suffused with dark scales, tarsi blackish with light brown 

 bands. Abdomen light brown. Fore wing with the dark brown ground 

 color concolorous with head and thorax, irrorated with black scales, the 

 lines black (pi, 28, fig. 2) ; basal line indicated by patch on costa faintly 

 connected to the slightly lighter patch in the cell; t. a. line defined on 

 basal side by less infuscation, giving effect of preceding light line, almost 

 erect, incurved on veins ; reniform only a darker and larger blotch on the 

 incomplete median line; t. p. line excurved on veins, defined on outer side 

 by slightly less infuscation ; 2 light points on costa beyond t. p. line ; sub- 

 terminal line indistinct, a slightly darker broad band as figured ; terminal 

 series of faintly darker dashes between the veins ; cilia concolorous. Hind 

 wing fuscous, somewhat lighter basally, no spots or bands, cilia brown. 

 Fore wing on under side brownish fuscous, darker in cell where there are 

 long hairs, lighter along inner margin. Hind wing on under side as on 

 upper side but with barely discernible trace of postmedian line. 



Expanse: 40.4 mm. 



Male genitalia: (pi. 28, figs. 3-7) Uncus with long ventral lobe 

 ("vertically bifid") , the dorsal part covered with long hairs. Subscaphium 

 present. Vinculum large, extending anteriorly (of necessity bent in ven- 

 tral mount, true outline shown by stippled line in figure 3). Juxta with 

 large terminal spine (fig. 6), Valve with "hadenid" neck and regular 

 corona at margin (single row of macrosetae) ; clavus a small setose lobe 

 in the membrane between sacculus and juxta ; clasper with swollen base, 

 enlarged ampulla (dorsal arm) and reduced true clasper (ventral arm) ; 

 digitus migrated to ventral edge of valve to form a "pollex" bearing 2 

 recurved macrosetae at its tip (fig. 5) ; sacculus swollen ventrally; 

 transtillae well developed. Aedoeagus without spines but with one 

 scobinate patch on vesica (fig. 7). 



Holotype: c? , Charles Island, Galapagos, elev. approximately 1300 

 ft.; 1939; E. A. Conway, collector (AHF no. 2). 



The interpretation of the "pollex" of this species as the digitus mi- 

 grated to the ventral margin requires explanation. Forbes (1934)^ has 



5 Entomologica Americana, n. s., 14: 28-29, and plates, 1934. 



