CERA.THOSIA. 643 



base and some scales towards extremities, the pro-, raeso-, and 

 metathorax with paired black points; fore cosse and tibiae with 

 black marks, the mid and hind tibiae with black marks at extre- 

 mities, the tarsi black ringed with white ; abdomen pale yellow, the 

 ventral surface white except at extremity. Fore wing silvery 

 white with numerous small black spots, some forming an ante- 

 medial series bent outward above inner margin, others a postmedial 



Fig. 176. — Cercithoda tricolora, J. }. 



series excurved to vein 2, and others subterminal and terminal 

 series. Hind wing pale jellow. 



Hah. U.S.A., Texas, Shovel Mts., 3 S ■ Exp. 36 millim. 



Larva. Hulst, Ent. Am. v. p. 118. 



Toung ; semiloopers, prolegs with the 1st two pairs aborted ; 

 dark brown or blackish, each somite with 14 to 20 piliferous warts 

 each with one erect hair or two divergent ones, the setae stiff, bulbous 

 at tips ; head dark, the frons triangular, the apex indented, the 

 eyes with 8 to 10 hairs. 



*5978. Cerathosia ? idella. (Plate CLXVIII. fig. 15.) 



Cerathosia idella, Barnes, Can. Ent. xxxvii. p. 193 (1905). 



Head and thorax white with black spots on shoulders, middle of 

 patagia, and dorsum of thorax, tbe metathorax with band, these 

 markings with blue scales mixed; palpi black at tips ; antennae 

 blackish ; fore tibiae black above, the tarsi black ringed with white ; 

 abdomen orange above, white below. Fore wing white with small 

 orange patch at apex and with black dots and bars, six spots 

 on costa, a round spot in cell followed by four transverse bars, the 

 3rd connected with a spot on costa ; a short streak on base of inner 

 margin, followed by five transverse bars from median nervure to 

 inner margin, the 1st not quite reaching it, the 3rd and 5th 

 narrower and sometimes broken in the male ; three or four sub- 

 terminal spots in male, in female a complete series ; a terminal 

 series of black blotches, in the male forming quadrate patches at 

 apex, middle, and tornus, the cilia black at these points. Hind 

 wing orange, slightly darker towards termen. 



Eab. U.S.A., Arizona, Pima Co. Exp. 25 millim. This species 

 is unknown to me, figured from a drawing from type in Coll. 



2t2 



