OP WASHINGTON, VOLUME XVII, 1915 171 



The affinities of this species as shown by the adults and imma- 

 ture stages are with C. ulrichii Brauer. It differs, however, in 

 not having the eye margins parallel above in the female, in not 

 having interrupted transverse band of yellow pile on the abdomen 

 and in having anterior femora with white hairs on the inner side 

 at the base. It is also considerably smaller in size. 



Larva: Third stage. Differs from its nearest relative C. ulrichii in 

 having spines on segments 3-4 large and subequal. 



Length 26-39 mm. Color yellowish brown, each segment with circular 

 black spots, more numerous on posterior segments. Mouth-hooks arcu- 

 ate but not curved backwards. 



Upper side. Spines large, black, numerous, all those on segments 

 2-3 nearly equal in size, further described as follows: head segment (seen 

 from in front), three irregular rows, those of the first row larger; first seg- 

 ment none; second segment two to three irregular rows subequal; third 

 segment, three to four irregular rows, those of first rows equal in size, 

 in third row somewhat smaller; fourth segment, four rows, subequal, three 

 isolated spines on lateral posterior margin; fifth segment, four rows an- 

 teriorly and four to eight in lateral posterior rows; sixth segment, five 

 anterior rows, spines of last rows considerably smaller, six to eight in pos- 

 terior lateral rows; seventh segment, five to six rows smaller toward rear, 

 lateral posterior rows of six to eight spines; eighth segment, seven irregu- 

 lar rows, the first having the spines well separated, about six spines on 

 posterior lateral margins; ninth segment, four rows, well separated, two 

 to three on posterior lateral margins; tenth segment with only two to three 

 spines on each side near anterior margin, and two entire rows on pos- 

 terior declivity. 



Lower side. Second segment, two rows in middle, three on sides; third 

 segment, four rows, subequal; fourth segment five rows, those of first two 

 somewhat larger; fifth segment, six to seven rows, those of first two rows 

 considerably larger; sixth segment, seven rows; seventh segment, seven 

 rows; eighth segment, six rows more sparsely placed than on preceding 

 segments; ninth segment, like eighth; tenth segment, four to five rows, 

 isolated; eleventh segment, on anterior margin at middle, three short 

 rows, one on sides, under posterior declivity, one transverse and three 

 semi-circular rows. 



Posterior stigma large, interior margins parallel, no indications of 

 radiating lines, black, with three to four small shining tubercles m-.-ir 

 lateral margins. 



Described from five specimens. 



Puparium: Above. Second segment, three rows of spines; third to 

 eighth segments, three to four rows; ninth segment, one row in middle, 

 two on each side; tenth segment, one row interrupted in middle. Dried 

 specimens show numerous fine transverse ridges which are not evident in 

 alcoholic specimens. Black. Length 20 mm., width 7 mm. 



