or->7 



as in Eucrostis or Pseudoterpna ; front moderately broad, less so, however, 

 than in Eucrostis. Palpi rather long and slender, projecting farther than usual 

 beyond. the front (though not nearly so much so as in Synchlora), slightly 

 ascending; third joint small, but distinct. Antenna' pectinated almost to the 

 tip; branches about half as long in proportion as in Eucrostis, or longer than 

 in any other genus except Eucrostis; in the female, slender and filiform. Fore 

 wings shaped much as in Eucrostis, costa curved in the same manner; apex 

 subacute, outer edge curved in much the same way. The costal space is 

 slightly narrower in proportion than in Eucrostis, and the fifth subcostal or 

 subapical space is small, being one-fourth as long as the wing, while in 

 Eucrostis it is much larger, being one-third as long as the costa of the wing. 

 Hind wings of much the same shape as in Phorodesma and Pseudoterpna, not 

 being produced and subangulated as in Eucrostis, or so long and fully rounded 

 as in Eunemoria ; the apical region is full and rounded, while the outer edge 

 is very straight. The venation is much as in Annemoria, the posterior discal 

 venule being greatly curved; the sixth subcostal venule co-originates with 

 the anterior discal venule. The costal vein, after anastomosing with the sub- 

 costal, is thrown off near the base of the subcostal cell. The abdomen does 

 not reach the anal angle of the hind wings ; its shape is much as in Eucrostis. 

 Hind legs unusually small; tibiae very slender and short, shorter than the 

 tarsi, and with but a single terminal pair of spurs in both sexes. No essen- 

 ■tial difference between the sexes, except in the antenna?. 



Coloration pale green, with a single oblique white line on the fore wings ; 

 hind wings immaculate. The known species are of larger size than usual in 

 the allied genera. ■ 



While the palpi are less ascending than in Eucrostis, the antennae are one- 

 half as widely pectinated, but wider than in Eunemoria, or, in fact, any genus 

 ef the subfamily except Eucrostis. The hind legs are much as in Phorodesma, 

 but there is but one pair of spurs, and the vertex is not so broad as in that 

 genus, while the antenna? are pectinated near the tip. The hind wings are 

 more produced toward the apex than in Annemoria. 



Synopsis of the Specie 



Of largo size, with male antennae narrowly pectinated C. nevadaria. 



Like nevadaria, but fore wing.s sharper ; outer edge more oblique C. bistriaria. 



Small; male with very broadly-pectinated antennae C. perririduria, 



48 P H 



