HEMIPTERA FROM JUAN FERNANDEZ AND EASTER ISLAND 401 
dorsalis apicem valvulae genitalis paullum superantes, robusti, subtriangulares, 
extus convexi, apice brevissime dentato-deflexi; inter hos lobos appendices 
duae deflexae graciles castaneae apice curvatae in conspectum venientes. 
Masafuera. 
This genus will probably prove to be represented also on the American 
continent, the Jassidae of which have been very imperfectly studied. 
Fam. Delphacidae. 
10. Sogata Selkirki Muir n. sp. 
»Male. Brachypterous; length 2 mm.; tegmen 1 mm. 
Vertex about as long as broad or slightly longer than broad, apex narr- 
ower than base, base slightly behind the middle of eyes; length of frons double 
the width, lateral margins nearly straight, 
narrowest at base, median carina simple or 
forked at the extreme base. Antennae 
reaching about the middle of clypeus, first 
segment considerably longer than wide, se- 
cond segment 1,8 times the length of first. 9 
Lateral pronotal carinae nearly straight, di- LE ES: 
ib 

verging posteriorly, not quite reaching the 
hind margin. Hind basitarsus longer than 
the two others together, spur nearly as 
long as_ the basitarsus, thin, with numerous Sogata Selkirki. Muir. 
small teeth on hind margin. _ Fig. 1. Full view of male pygifer. 
; : Fig. 2. Lateral view of anal segment and 
Opening of pygofer wider than long, ° aedeagus. z 
round, margins entire, anal emargination 
deep, anal angles produced and curved, subacute. Diaphragm short, dorsal 
margin U-shape, armature forming a raised, shield-like process. Anal seg- 
ment small with two long, curved spines arising from near middle of ven- 
tral aspect, their bases far apart. Genital styles long, thin, narrow, straight, 
slightly widened near apex where the inner margin is slightly produced angu- 
larly. Aedeagus small, short, slightly compressed laterally, in lateral view 
straight on dorsal margin, slightly sinuous on ventral margin; orifice at apex; 
nine or ten small spines at apex forming an arc on dorsal margin and con- 
tinuing on each side to ventral margin. 
Light brown, carinae of head and thorax, antennae, legs and some marks 
on the abdomen lighter. Tegmina light brown, a dark mark at apex of clavus, 
veins light with a few very small tubercles. 
Female. Brachypterous; length 3 mm.; tegmen 1,4 mm. Similar in build 
and coloration to the male. | 
Described from five males and four females from Masatierra. There are 
also a number of nymphs of various sizes. These have a double carina on 
frons and the basal segments of the antennae are as wide as long. 
I name this after the prototype of boyhood’s hero.» F. MuIR. 
26 — 2218. The Nat. Hist. of Juan Fernandez and Easter Isl. Vol. III. 
