1864.] 129 



subdivides just below the fourth median. A triangular discal spot. A 

 submarginal row of rust brown dots on the apical half of the wings. 

 Secondaries much paler, concolorous with both wings beneath. On the 

 primaries the discal and an outer additional dot appear beneath. 



Length of body, .68. Exp. wings, 1.65 inches. 



San Francisco, Cal. (Mus. Comp. Zool. A. Agassiz). 



Halesidota Edwardsii n. sp. 



% . Bicolorous, bulF-yellow and vermillion. Primaries with five sub- 

 hyaline smoky transverse bands, margined with black, less oblique than 

 usual. The basal band consists of a small costal spot and an outer me- 

 dian large round spot. Second band regularly curved, third hardly 

 oblique, waved. Two outer ones nearly parallel with the outer margin. 



Secondaries transparent except on the pilose inner margin, which is 

 tinged with vermillion. Abdomen above, including the base of the 

 anal tuft, vermillion. 



Beneath pale bufi", the costal spots reappear. On the costa of the 

 secondaries near the apex are two dusky square spots, which do not 

 appear on the upper side. 



Legs annulated on the femora and tibiae. One ring on the end of 

 tibife, and each tarsus is annulated on the basal half with smoky pale 

 brown. Femora vermillion beneath. 



Length of body, .80. Exp. wings, 2.20 inches. 



San Francisco, Cal. (Edwards.) 



Halesidota argentata n. sp. 



9 . Head and thorax pale buff yellow. Base and side of the front 

 walnut brown. Centre of prothoracic pieces brown. Patagia margined 

 with brown, within very broadly so. 



Primaries walnut brown, with five rows of large irregular round or 

 ovate silver white spots, except the costal spots, which are buff yellow. 

 Two basal spots yellow. Internal margin buff as far as the first line, 

 which is slightly curved, the middle dot of which last is much smaller 

 than the others. In the second line, which is straight, the submedian 

 spot is transversely broad, oblong. Costal spot largest. The third row 

 does not extend to the inner margin. The spots making up the mar- 

 ginal and last row are uniformly round. Fringe and termination of 

 nervules pale buff. 



