NO. 2119. BRITISH F0S8IL INSECTS— COCKERELL. 487 



HOMOPTERA. 



NECROPSYLLA ANGLICA, new species (Psyllidae). 

 Plate 63, fig. 5. 



Lower half of wing (all that is visible) hyaline, with the media, 

 cubitus, and wing-margin very dark brown; anal nervure evanescent, 

 not colored. Cell in fork of media 448 n long on upper side, stem 

 of media from separation of cubitus to fork 560; cubitus from sepa- 

 ration of media to fork 240 fi, length of cell in fork of cubitus 560 /i. 

 What can be seen of the venation exactly agrees with the American 

 Miocene genus Necropsylla Scudder; it is also similar to the living 

 genus Paurocephala Crawford. 



Oligocene at Gurnet Bay (Brodie). Lacoe Coll. 7671. 



Holotype.—C&t. No. 61426, U.S.N.M. 



PSYLLA (sens, lat.) EXHUMATA, new species (Psyllidae). 

 Plate 63, fig. 6. 



Female. — Anterior wings about 1.5 mm. long; broad and obtuse, 

 dark brown; Rs turned upward at end; upper branch of media 

 nearly in a straight Hne with stem; cell in forks of media 320 fj, long 

 on upper side; cell in forks of cubitus elongated, about 528 n long, 

 the lower branch vertical; stem of cubitus (from media to fork) 208 /x; 

 a vertical hne through middle of wing at about level of middle of cell 

 in forks of cubitus measures 176 /i from cubitus to media, 128 from 

 media to radial sector, 160 from radial sector to costal margin. 

 Caudal segment of abdomen greatly elongated, 528 n long, and 50 

 wide near apex. 



OUgocene at Gurnet Bay (Brodie). Lacoe Coll. 7619. The 

 caudal end is Hke that of the hving Psylla jloccosa Patch. The cell 

 in the forks of cubitus is like that of species of Ajylialara, and the dark 

 wings also indicate that the species is not a Psylla in the restricted 

 sense. What can be seen of the structure of the head, with convex 

 front and large prominent eyes, accords well with Aphalara, though 

 not with all species of that genus. On the whole, a definite reference 

 to a restricted modern genus seems unwarranted, although there is 

 notliing tangible on which to estabUsh a new generic name. 



The Psyllidae of the Florissant Miocene (three genera and four 

 species) have all had to be referred to apparently extinct genera. 



Holotype.—Cht. No. 61427, U.S.N.M. 



SCHIZONEURITES, new genus (Aphididae). 



A minute form related to Schizoneura or Eriosoma; beak very short, 

 four-jointed; media leaving radius at a point very remote from 

 cubitus (I follow A. C. Baker's nomenclature of the venation), its 

 stem very strong and distinct, the upper branch strongly divergent 



