190 NOTES ON CYDOSIA AND CERATHOSIA. 



in the middle, with a pointed tip, but little curved. Side pieces sub- 

 equal, with an obliquely curved tip. 



C. trioolor Smith. Entom. Araer., L887, vol. 3, p. 79. 



Bead, thorax, and primaries above, glistening pure white, spotted 

 with black; secondaries and abdomen uniform glistening clay-yellow. 



Palpi black tipped ; tip of frontal projection also black ; a black spot 

 ai lb*' inner base of antenna'. Collar with a black dot each side of the 

 middle; thorax with four black spots, two on each side of the middle; 

 patagise with two black spots. 



Primaries with black powderings along costa, forming an elongate 

 costal patch at outer third, in which arc three white costal dots. The 

 black spots on primaries are rather irregularly arranged and variable; 

 there is a series along the median vein and another along- the subcostal ; 

 in some specimens there are two rather indistinct transverse bands 

 formed. At outer fourth is usually a sinuate, narrow, Olaek transverse 

 line, often broken up into spots and sometimes not traceable as a line; 

 there is some difference, too, in the form of the line when it is present. 

 A series of int ra-venular spots parallel to and not far from outer mar- 

 gin always present; a series of terminal lunules; fringe white. Sec- 

 ondaries and abdomen immaculate. Beneath, secondaries and abdomen 

 as above; abdomen with a more or less complete series of narrow black 

 spots on each side of the middle. Legs white, black marked. Tarsi 

 black or brown, ringed with white. Primaries yellow to near outer 

 margin, where it is separated from the white terminal space by a broad 

 blackish shading which extends inward on the costa. A series of black 

 terminal lunules. 



Expands, 1-1.37 inches =25-35 mm . 



Habitat. — Texas 



This species seems locally common. It has been received by a num- 

 ber of collectors as well as by myself, but all the specimens are from the 

 same source in southwestern Texas. It was collected at light. The 

 armed fore tibia, combined with the clypeal protuberance, are, I believe, 

 unique in the Arctiidw. 



