MONISTA.—ECHIASTER. 591 
5. Monista diffinis. 
Ferruginea, capite prothoraceque obscurioribus, abdominis apice dilutiore ; elytris quam prothorax vix longiori- 
bus, fascia mediali ad suturam interrupta nigra; capite prothoraceque strigosis. 
Long. 3 millim. 
Hab. Guatemata, San Juan in Vera Paz (Champion). 
Head subquadrate, truncate behind, strigosely sculptured; antenne immaculate. 
Thorax about as long as broad, not altogether globose, the sides being very obtusely 
angular, the surface rather coarsely strigose. Elytra densely punctate. 
Of this species only a single badly preserved example has been obtained; it isa much 
narrower insect than I. strigicollis, and differs in many other details, the form of the 
head being, however, similar in the two. 
6. Monista picturata. (Tab. XV. fig. 12.) 
Elongata, angusta, nigra, elytrorum macula basali, fascia lata apicali flammulata, abdominis apice pedibusque 
flavis, tibiis fuscescentibus, antennis palpisque fusco-testaceis, illis basi testaceis. 
Long. vix 4 millim. 
Hab. Panama, Bugaba (Champion). 
Antenne shorter than the head and thorax, a little thicker towards the apex, the five 
basal joints yellow, the others infuscate ; palpi yellow, a little infuscate. Head narrow, 
rounded and narrowed behind the eyes, so that the vertex is very narrow, indistinctly 
punctured. Thorax narrow, very convex transversely, rounded at the sides, rather 
longer than broad, indistinctly punctured. Elytra longer than the thorax, black; each 
with a large humeral spot, and a broad apical band (extending further forwards 
near the suture, yellow); indistinctly punctate. Hind body very finely, scarcely 
perceptibly punctate. 
The only example found of this very distinct species is in fragments, but I have 
restored it sufficiently for delineation. 
Group SUNIINA. 
I propose to include in this group all the genera of Peederine that have the roof over 
the anterior coxe entirely corneous behind; this character, for taxonomical purposes, 
is evidently of superior importance to the structure of the tarsi. The group will con- 
sequently (like the Lathrobiina) include genera with simple filiform tarsi, and others 
with the fourth tarsal joint, and sometimes the third also, furnished with a mem- 
branous lobe beneath. 
ECHIASTER. 
Echiaster, Erichson, Gen. et Spec. Staph. p. 620. 
This is a New-World genus numerously represented in South America; one or two 
