184 HEMIPTERA-HOMOPTERA. 
black, the front part of the pronotum being always red; the two broad light bands on 
the tegmina are either red or yellow. There is a single specimen from Guatemala 
in the Vienna Museum belonging to the same form, with the bands red, labelled 
Sphenorhina trifasciata, Signoret, in litt. I have only seen one example of the typical 
T. sororia from Central America, although it appears to be the most abundant of the 
Cercopide in the northern districts of South America; it has the head, pronotum, and 
scutellum entirely red, and the tegmina black, with two broad yellow bands. The 
form in our collection appears to replace it further north, and is no doubt identical with 
Cercopis bicincta, Say. Of this insect, Say says that it “resembles the rubra, Linn., 
and sororia, Germ., but is sufficiently distinct”; the difference, however, only appears 
to be one of colour, and the species is evidently variable in this respect. 
In the Vienna Museum collection are four specimens named Sphenorhina tricolor, 
Signoret, in litt., which only differ in having the base of the tegmina yellow (unicolorous 
with the front band), and two named S. flavicincta, Signoret, in litt., which have the 
hinder band wanting; they are, however, only varieties of the typical sororia form, and 
serve to show how it varies in colour. Some of the same varieties may be seen in the 
British Museum collection. ‘Two forms from the Volcan de Chiriqui are figured. | 
22. Tomaspis laterinotata, sp.n. (Tab. XI. figg. 22, 22a.) 
Oblongo-ovata, sat angusta, rufo-brunnea, capite sat magno, metopidio haud producto, rotundato ; pronoto sat 
fortiter rugoso-punctato ; tegminibus utroque macula albidé elongata, pone humeros, marginem vix 
attingente, sat fortiter sculpturatis, apicibus haud reticulatis ; corpore subtus dilutiori, pedibus brunneo- 
testaceis. 
Rather long, oblong-ovate, of a dark castaneous or rufous-brown colour, with two abrupt whitish spots on the 
tegmina behind the shoulders, which are elongate and scarcely touch the margin, a very thin line of 
darker colour separating them from it, except just at the base; head rather large, with the metopidium 
rounded, not compressed or produced; pronotum rugosely and-ather strongly, but not deeply, punctate ; 
sculpture of the tegmina comparatively strong, the apices not reticulate; clavus separated from the corium 
by a deep furrow; underside light testaceous ; legs testaceous. 
Long. 10 millim.; lat. max. 44 millim. 
Hab. Mexico (Mus. Oxon.). 
23. Tomaspis postica. (Tab. XI. figg. 18, 18a.) 
Monecphora postica, Walk. List of Homopt. Ins., Suppl. p. 177 (1858) *. 
Tomaspis pictipennis, Stal, Stett. ent. Zeit. xxv. p. 63 (1864) *. 
Hab. Mexico (Sallé+), Vera Cruz (Mus. Holm. & coll. Signoret?), Orizaba (Bilimek, 
in Mus. Vind. Ces.), Atoyac in Vera Cruz (Schumann), Teapa in Tabasco (H. H. Smith) ; 
Nicaracua, Chontales (Janson); Costa Rica (Van Patten). 
There is a large series of this pretty and distinct species in our collection. A single 
example from Costa Rica belongs to a somewhat dark variety. We figure a specimen 
from Teapa. 
