224 Journal New York Entomological Society, r^oi. xxviii, 



lesta. They would seem to go together, and with our present tend- 

 ency to emphasize ventational characters would naturally be placed 

 in Chilo. The larva of the type of Cliilo differs from that of Diatrcca 

 in having only two lengths of hooks on the prolegs, and having the 

 circle open on the outer side, so that when the larvae of other species 

 become known we are likely to have collateral evidence. 



Genus lesta Dyar. 



I. lisetta Dyar. Ft. Myers, Fla., May, 1916; J. C. Bradley; Leroy, Ala., June 

 II, 1917. 



Genus Diatraea Guild. 



D. evanescens Dyar. Biloxi, Miss., June 13, 1917; Schriever, La., June 17; 



Richmond, Tex., June 22. 

 D. saccharalis F. 



The early stages of this species show some unexpected characters, 

 necessitating a widening of the definition of the subfamily. The 

 larva shows the general characters of the family Pyralidae, with 

 simple setae, bisetose prespiracular wart, iv and v of the abdomen on 

 the same tubercle, and a complete circle of irregularly triordinal 

 hooks on the prolegs. The other characters are as follows : Vertex 

 closed, adf. ending abruptly about a third way up to vertex; front 

 small and quite narrow. Prothorax with cervical shield normal ; 

 beta higher than alpha, delta higher than gamma, and slightly behind 

 beta, gamma, epsilon and rho forming nearly an equilateral triangle, 

 closer together than the other setae. Prespiracular and subventral 

 each with two setae, horizontally placed. Meso- and metathorax sim- 

 ilar, with ia + b, iia + b; iv + v on a small plate, and iii on the pos- 

 terior edge of a large one; vii of two setae (like the Galleriinae, 

 Cramhus has a single seta), lateral minute primaries on a large plate; 

 scutellum large, chitinized, without setae. Abdomen (A3-6) normal, 

 with iii nearly above spiracle, iv above and slightly behind v on the 

 same tubercle, vii of three small setae, the posterior slightly the long- 

 est; hooks of prolegs irregularly bi- and tri-ordinal. A2 similar, the 

 setae vii in a triangle, Ai with 2 setae vertically placed. A7 has two 

 horizontally placed setae. A8 has the spiracles enlarged, facing back 

 and much nearer dorsal line, with iii directly in front ; the plates of 

 i and ii fused across the dorsal line and vii single. On A9 ii is fused 

 across the dorsal line as in many Tortricids, iii (rho) is minute on 



