284 PROCEEDINGS OF THE ACADEMY OF [1884. 



beneath ; collar white, with two black lines or marks ; patagi:e 

 white, with a black band ; thorax above white with a black central 

 band from collar to abdomen ; abdomen above whitish near the 

 thorax, rest blackish, beneath white, a row of four or five (body 

 a little abraded at sides) black spots laterally, and five ventrally ; 

 legs black, furred inwardly with white. 



Primaries, upper surface, white with black spots, arranged much 

 in the same order and number as in Scribonia, but instead of 

 being circular or oval as in that species, they are parallelogrammic, 

 square or wedge-shaped, and are not black rings encircling a white 

 spot, but are all black blind eyes. 



Secondaries white with some scattered brown marks at outer 

 margin, heaviest near apical angle, and a brown discal spot. 



Hab. — Colorado. 



There is on this species none of the blue sheen so conspicuous 

 on Scribonia, but the marks are all black or brownish black, and 

 the whole insect calls up the idea very strongly of Arctia Specta- 

 bilis Tausch., from Russia. 



Spilosoma niobe. 



Expands l^ inches ; head white, palpi j'ellow, terminally black ; 

 thorax white ; abdomen above white, with a row of five large 

 dorsal spots, sides yellowish, with two rows of black spots ; some 

 allowance must be made for the description of the abdomen, as it 

 was compressed and somewhat rubbed. Legs yellow, tarsi ringed 

 with l)lack and white. Antennje wanting on the single example 

 whence this description is drawn. 



Upper surface. Primaries white, with all nervures and nervules 

 heavily bordered on both sides with brown ; this brown is not 

 dark and is much of the color of cotfee with a somewhat undue 

 amount of milk in it, in some lights it has a slight bronzj' ap- 

 pearance. 



Secondaries white, the nervules on costal half of wing towards 

 apex shaded with same brown as superiors, but not as heavil}^ 



Under surface nearly as above. 



One example taken in Florida, some years since, by Mr. A. 

 Bolter, from whom 1 obtained it. 



Harpyia albicoma. 



$ 9 size and form of Borealis, Bicuspis, Bifida, etc. Head 

 and collar pure white ; thorax above dark gray and white ; abdo- 

 men above gray heavily clothed with white hair. Body beneath 

 white. 



