16 PROCEEDINGS OF THE NATIONAL MUSEUM vol.68 



wards, the describer of the species, and differ from figures and 

 descriptions published ^^ by him in showing a short branch on 

 the inner ramus of each of the anterior appendages. Probably this 

 is merely an exuberant development in this already elaborate 

 aedeagus that is not present to the same degree in all specimens. 

 A specimen from Cambridge, Mass., agrees entirely in genital char- 

 acters with the diagnosis of Edwards and the aedeagus is as illus- 

 trated in figure 37 except for lack of the small supplemental tooth 

 here discussed. 



Female. — Coloration like that of ordinary males, those examined 

 being pale sulphur yellow above, with the apical cells more hyaline, 

 and stramineous below. Eighth sternite slightly emarginate lat- 

 erally, moderately pointed apically. 



Length, 3.5-4 mm. 



Distribution. — The species has been recorded from nearly all 

 parts of Europe, from northern Africa, and from Michigan, Iowa, 

 Maine, New York, and Pennsylvania. So far as the writer is 

 aware these American records are not based on examination of the 

 genitalia, and as we have several other species with similar colora- 

 tion, there is chance for confusion. The only definite identification 

 from the material examined by the present writer is a male col- 

 lected at Cambridge, Mass., September 13 (M. C. Z.). With it 

 are associated four females collected at the same locality October 

 20, 24, and November 1. 



Even the European distribution of T. lethierryi is not a matter of 

 certainty as specimens under that name from Lille, France, which 

 agree in coloration have the oedeagus notably different in form, as 

 described and figured (fig. 34) for T. Xanthippe, new species, 

 p. 14. 



TYPHLOCYBA DUPLICATA, new species 



Male. — Ground color milky- w^hite, a little inclined to ivory on 

 vertex and scutellum; apical cells fumose, a dusky band over cross- 

 veins, and another from middle of clavus to middle of costal plaque ; 

 under parts whitish. Hypopygium : Upper posterior angle of ninth 

 segment produced in a broad process which is emarginate as seen 

 from the side, and bears two acute incurved teeth which can be 

 seen from above (much as in T. danae, fig. 83) ; lower posterior 

 angle rounded. A conspicuous patch of bristles near articulation 

 of outer clasper. Outer clasper, lacking single strong basal bristle 

 as in T. gillettei, gradually narrowed from base for three-fourths 

 of its length where the shoulder is so prominent as almost to sug- 

 gest a process (fig. 39), apical fourth in line with the inner side 

 of clasper, upcurved, gradually narrowed and rounded at tip. Inner 



'=Ent. Mo. Mag., ^[aich, 1908, pp. 83-84, Ars. 10-11. 



