Genus Schematiza. 265 
coarctantur; margines anterior et posterior ambo recti et 
transversi sunt; ad latera undique laté depressio fit; thorax 
niger est, lateribus (et interdum linea media obsoleta) 
flavis; scutellum nigrum; elytra subparallela, thorace latiora, 
humeris sat exstantibus, ad apicem rotundata, et haud ad 
suturam dehiscentia; undique 3 vel 4 sulci apparent, haud 
profundi, interdum obsoleti, haud apicem attingentes ; quoad 
colorem elytra nigra sunt, ad humeros autem macula minuta, 
etad medium fascia lata transversa, ad margines attingens, 
flavee sunt; antenne robuste, nigre; pedes et corpus sub- 
tus nigri. 
Long. corp. lin. 34; lat. lin. 13. 
S. flavofusciata differs from S. linealicollis (post, p. 266), by its 
much greater breadth, its broader fascia, and its less distinctly- 
marked costz on the elytra, as well as by the markings on the 
thorax ; it is much smaller, and comparatively broader than S. 
vicina (ante, p. 262). The fascia of the elytron is transverse both 
at its superior and inferior margin, not oblique as in S. frenata ; 
the line of margination is, however, not straight, but sinuate. 
A form, which I take to be a variety of this species, is rather 
narrower in breadth, and has the humeral marking continued 
broadly to the medial fascia, the fascia itself being much more 
irregular in outline; it may be indeed that this will prove to be a 
separate species. 
I took several specimens of S. flavofasciata when at Petropolis, 
near Rio Janeiro, with Mr. J. Gray, in February, 1857, and also 
at the same place specimens of the variety. 
In the Collections of Mr. Wilson Saunders, Mr. Baly and the 
Rev. H. Clark. 
8. S. preusta, n. sp. 
Elongata, subparallela, costata, flavo-fulva, elytro singulo ad 
apicem rotundato, apice tenuiter nigro: caput nigrum; thorax 
modice transversus, depressus, latera sinuato-rotundata, mar- 
gines autem anterior et posterior recti et transversi; thorax 
undique ad margines laté excavatus est; quoad colorem 
flavo-fulvus, macula media insulari nigro-fusca; scutellum 
flavo-fuscum ; elytra paulum thorace latiora elongata sunt et 
sat parallela; humeri vix exstant; inter suturam et marginem 
coste tres apparent, una media, major, et undique altera 
minor, interdum obsoleta; he tres nec apicem attingunt; 
elytra favo-fulva sunt, apex autem tenuiter fuscus est, ita et 
