498 PROCEEDINGS OF THE NATIONAL MUSEUM vol 



ments) and possibly the left a!so (of 58 segments), left foreleg missing* 

 posterior piece consisting of metathorax with third pan of legs,( 

 hindwings and abdomen. 



Paratypes: Seven. Texas: Seguin, Oct. 26, 1905, F. C. Pratt, 

 female (USNM); Victoria, June 14, 1907, J. D. Mitchell, 1 female 

 (USNM); "Collection Belfrage," 1 female and 1 specimen with abdo- 

 men off 8 (USNM); Sutton County, July 16, 1928, R. H. Beamer, 1 

 female (KU). New Mexico: Eddy County, July 12, 1927, R. H. 

 Beamer, 1 male (MCZ) and 1 specimen with abdomen off (KU). 



The paratypes show variation in the amount of yellowish brown on 

 the vertex and face, streaking of the pronotum (including the presence 

 or absence of the median dorsal streak), position of 3d r to R.2 or 

 R2+3 (R2+3 most common) or upper branch of R2+ 3 fork, presence ol 

 an additional s between R2 -\- 3 fork (occasionally) , number of branches 

 from Cul to margin (3 to 5); and the position of 2d r to Rs or R2+3 

 (Rs most common). The average length of the forewing in female 

 4.5 mm., in male 4 mm., width in female 1.7 mm., in male 1.5 mm. 



The specimen recorded as areolaris from Columbus, Tex. (collected' 

 by Schwarz), by McClendon (1906, p. 171) is the holotype of chapinil 

 Also, the Texas material collected by Belfrage and reported as areolaru 

 by McClendon (loc. cit.) and specimens from Eddy County, N. Mex., 

 and Bosque County, Sutton County, and Victoria, Tex., noted b5^ 

 Carpenter (1940, p. 256) as areolaris prove to be chapini. 



The adidts examined were collected from June 14 to October 26. 



C. chapini resembles C. basalis of British Guiana very closely in the 

 wing pattern, with the main differences being seen in the longer basal 

 radiomedial streak, the usual occurrence of a pronounced anteptero-: 

 stigmal spot in both the forewing and hindwing, and the lack ol 

 dotted setal pits on the longitudinal veins of chapini. The latero< 

 ventral halves of the ninth tergite of the female are more than haL 

 the length at anterior margin in chapini, but less than one-half th( 

 length in basalis. 



This third species of Clitnacia to be found in the United States i\ 

 easily distinguished from the other two species, areolaris and cali). 

 fornica, through the wing markings and genitalia. 



This species is named in honor of Dr. Edward A. Chapin, formerh 

 curator of insects of the U. S. National Museum, whose generous an 

 unselfish cooperation has assisted immeasurably with the completio 

 and publication of this paper and numerous other entomologies 

 revisions. 



' It seems possible that these specimens originated in Bosque or McLennan Counties. Tex., since th( 

 were areas where Belfrage collected most, particularly in his later years. It has been emphasized by Qeise 

 however, that Belfrage collected in several other parts of Texas. The two specimens mentioned are part 

 the large collection of Texas insects purchased by C. V, Riley which is in the U. S. National Museu 

 (Ent. News, vol. 4-1, pp. 127-132, 19.33.) 



