134 
closely allied species which have small thoracic spines*, the only 
difference between the two genera will be one of general form, 
the Graphisuri being much flattened, with comparatively short 
antennal joints, whilst the Toronm have convex shapes and very 
slender antennae. 
1. ToroncBus figuratuSj n. sp. 
T. ohlongus, convexiusculus, nigro-castaneus, capite thoraceque vitta 
central! ochracea : elytris litura humeral!, macula magna com- 
muni ante medium antice et postice per suturam excurrente, 
fasciaque lata inflecta prope apicem cinereo-ochraceis. Long. 
4-5 lin. c? $ . 
Head dark brown, sides of forehead and cheeks each with a 
yellowish streak, vertex with a broad central yellowish stripe. 
Antennse slender, twice the length of the body in both sexes, 
reddish, tips of joints dusky, and bases of third to sixth joints 
whitish. Thorax not much broader than the head, and with a 
slight protuberance on each side about the middle, but no trace 
of spine or tubercle ; above dark chestnut-colour, silky, sides 
and a central vitta continuous with that of the head yellowish. 
Scutellum ochreous. Elytra in both sexes very slightly narrowed 
to three-fourths of their length, then abruptly narrowed in a curved 
line to the apex, which is subsinuate-truncate ; surface punc- 
tured, except near the apex, dark brownish chestnut ornamented 
with marks of a yellowish-ashy hue ; there is a small spot on 
each side of the scutellum, an angulated streak under each 
shoulder, and a large common spot a little before the middle 
extending along the suture both towards the base and. apex, and 
connected with an angulated streak which touches the side on 
each elytron ; this patch has a small blackish speck in its mid- 
dle over the suture : besides these marks, the apex has on each 
side a flexuous streak enclosing a tooth-shaped spot of the 
ground-colour of the elytron. Body beneath hoary white. Legs 
reddish, with ashy pile ; apex of thighs, tibise, and tarsi black. 
(5 Terminal abdominal segment feebly emarginated at the 
apex. 
2 Ovipositor greatly elongated and exserted beyond its sheath, 
apical dorsal plate of its sheath pointed, ventral deeply cleft. 
I met with this elegantly marked insect only at Obydos, on 
the Guiana side of the Lower Amazons, where it was abundant, 
in March 1859. It has been found also in the interior of 
Cayenne by M. Bar, and exists in French collections under the 
names of Eutrypanus figuratus and E. elegans, the former of 
which I have adopted. 
* Such as Eutrypanus tessellatus. White, Cat. p. 372 (= E.variegatus, 
Dej. Cat.), and others, not found in the Amazons region. 
