British Homoptera-Cicadina. 17 
of the present work. Platymetopius and following 
genera, although sufficiently distinct from the Jasside 
by reason of the more elaborate structure of their head, 
are decidedly Jassid in their affinities, and might even 
be placed at the head of that family with propriety. 
TaBLE OF GENERA. 
(6). Ocelli on the crown close to its front margin. 
(5). Eyes normal. 
). Crown transversely striate in front i, STRONGYLOCEPHALUS. 
. Crown not transversely striateinfront ii. AcocEPHALUS. 
) 
2). Eyes nearly enclosed by the foliaceous 
edge of the crown .. : .. li, Kuprnrx. 
6 (1). Ocelli on the forehead. 
7 (12). Crown uot transversely striate in front. 
8 (9). Crown angular in front 5c .. ly, PuaryMEroPius. 
9 (8). Crown not angular in front. 
10 (11). Pronotum separated from BEOeiersa 
by a distinct ridge. : .. vV. GRAPHOCRERUS. 
11 (10). Pronotum not separated oh pro- 
sternum by aridge .. ae .. vi. Doratoura. 
12 (7). Crown transversely striate in front. 
3 (14). Crown with a linear black band ad- 
joining and running parallel with 
its front margin ae 3 .. Vii. PARAMESUS. 
14 (13). Crown entirely pale .. is .. Vill. GLYPTOCEPHALUS. 
1. SrroneynocepHauus, Flor. (Pl. IIL, fig. 5). 
Flor, Rhyn. Liv., i., 109 (1861). 
Crown obtusangularly produced and transversely striate in front ; 
frons transversely impressed above ; forehead thin and knife-like. 
Ocelli close to the front margin of the crown, about equidistant 
from the front margin and from the eyes. LElytra coriaceous, 
narrowly rounded at the apex, scantily pubescent along the nerves ; 
two transverse nerves; appendix wanting. g: genital valve 
present; plates subnavicular; lower angle of pygofer with two 
unequal teeth, of which the front one springs from a wide base; 
free portion of the penis subcylindrical, bisinuate on the upper side, 
barbed at the apex (agrestis). 
The two described European species are distinguished 
as follows :— 
Length of pygofer (3) down the middle of the upper — 
side equal to or longer than the preceding dorsal 
segment. No black line on the crown in front’ .. 1. agrestis. 
TRANS. ENT. SOC. LOND. 1888. PARTI. (MARCH.) OC 
