22 PROCEEDINGS OF THE NATIONAL MUSEUM tol. 68 



9th segment prominent, subangiilate, the apex with numerous hairs; 

 lower angle well rounded off, receding. Outer clasper narrowed 

 from base, but more abruptl}^ so in posterior fourth, with a row of 

 widely-spaced short hairs on upper margin on this portion, apex 

 subacute; inner clasper slender, the terminal fourth curved out- 

 wardly then anteriorly and at the extreme tip, downwardly, apex 

 aciculate (fig. 51). Aedeagus divided for its apical third into four 

 pointed processes, of which the inner pair are shorter and converge 

 apically, the outer longer, divergent, and curved slightly forward 

 apically (figs. 51-52). Supporting laminae somewhat as in T. 

 querci. 



Female. — Eighth sternite moderately pointed medially, slightly 

 emarginate laterally, and except for larger size, almost exactly as 

 in T. gillettei (fig. 102). 



Length, 4^-1.5 mm. 



KEY TO tOLOl! VARIETIES OF CYMBA 



1. Pale yellowish, eutirely lackiug dark maikiiigs above; apex of oviposi- 



tor sheath dark var. pallens, new variety. 



— On the same general color some dark markings superimposed 2 



2. Only the seutellum dark var. unlpuncta, new variety. 



— Dark markings more extensive 3 



3. Seutellum and a narrow band just behind middle of clavus dark 



var. cymba McAtee. 



— Seutellum and a dorsal saddle involving practically all of clavus, and much 



of the adjacent corium dark var. grata McAtee. 



TYPHLOCYBA CYMBA, var, CYMBA McAtee 



Head and thorax pale yellow, flecked with pellucid greenish yel- 

 low; tegmina whitish hyaline faintly washed with greenish yellow, 

 spical cells clear. Seutellum and a straight-sided crossband just 

 behind middle of and confined to clavi, dusky. ITnderparts yellow- 

 ish-white, 



Halifax, Nova Scotia, August 9, 1919 (Nova Scotia Dept, Agr,, 

 and McAtee) ; Digby County, Nova Scotia, August 31, 1918 (N, S. 

 Dept, Agr.) ; Hazelhurst, Wis,, July 12, 1918, on Acer., L. G, Gentner 

 (Ball), 



TYPHLOCYBA CYMBA, var. PALLENS, new variety 



Like var, cymba but entirely lacking dark markings, 

 Holotype. — Male, allotype, and paratype females, Halifax, Nova 

 Scotia, August 8, 1919 (N, S. Dept. Agr., and :McAtee) ; also Ithaca, 

 N. Y,, July 15, 1907 (111, State Nat^ Hist, Survey); Agricultural 

 College, Michigan, June 1, 1920, seriously injuring sugar maple: 

 Hazelhurst, Wis., .July 12, 1918. on Acer. L. G. Gentner (Ball), 



