ELYTROSPHARA. 257 
of the ground-colour; beneath encous with a more or less purplish gloss, the sides of the breast and the 
margins of the abdominal segments testaceous or obscure testaceous. 
Hab. Muxtco, Omilteme, Chilpancingo, and Xautipa, all in Guerrero (H. H. Smith). 
E. marginicollis resembles somewhat in the elytral pattern L. tibialis, but differs 
from that insect in the flavous thoracic margin and in the numerous elytral stripes ; 
these stripes are more or less united about the middle, and form spots which limit the 
pale transverse band posteriorly, this band being strongly dentate in the centre (in 
E. tibialis its place is taken by small flavous spots placed much more in a line). The 
posterior portion of the elytra in E. marginicollis has also a more or less developed 
flavous spot on the lateral margin and a smaller spot near the apex. 
8. Elytrosphera bifasciata. (Tab. XLI. fig. 19.) 
Oblong-ovate, widened posteriorly, neous; the thorax opaque, impunctate; elytra semipunctate-striate, the 
interstices aciculate, fulvous, a very broad transverse band at the base and a narrow one at the middle, as 
well as the sutural and lateral margins, obscure aneous. 
Length 443-5 lines. 
Of the same shape as E. marginicollis, obscure brownish or blackish-geneous ; the head rather closely punctured 
near the eyes; the antenne not extending much beyond the base of the elytra, black, the lower three 
joints stained with fulvous at the apex, the terminal joints gradually but moderately thickened; thorax 
more than twice as broad as long, the sides rounded and dilated towards the apex, the surface opaque, 
impunctate or nearly so on the disc, the lateral portion with a few fine punctures; scutellum impunctate ; 
elytra with fine rows of punctures, which are arranged somewhat in double rows, more irregularly punc- 
tured towards the base, the interstices everywhere aciculate and coriaceous, fulvous, the basal portion 
occupied by a broad dark eneous band (slightly produced at the suture, and not extending to the lateral 
margin), and a narrow band placed at or immediately below the middle (sometimes extending to the 
lateral margin, but not to the suture, sometimes not to either), the suture and the lateral margin also 
eeneous ; underside and legs more or less tinged with purplish. 
Hab. Mexico, Omilteme in Guerrero 8000 feet (H. H. Smith). 
Several examples. The antenne in this species have the terminal joints more 
thickened than in most of the allied forms. 
9. Elytrosphera erratica, (Tab. XLI. fig. 20.) 
Obscure seneous, the head, antennx, and legs fulvous; thorax strongly punctured, more or less marked with 
fulyous; elytra irregularly punctured, obscure violaceous or neous, with very narrow, short, irregular, 
pale flavous or whitish transverse stripes. 
Length 23-3 lines. 
Head fulvous, sparingly punctured, the vertex often spotted with obscure eneous ; palpi and antenne entirely 
fulvous, the latter with the terminal joints gradually thickened, and the last joint distinctly longer than 
broad; thorax rather more than twice as broad as long, the sides rounded, not much produced in front, 
the anterior angles obtusely rounded, the surface strongly punctured laterally, much more finely and 
sparsely so on the disc, the latter greenish-eneous, the sides often with a large fulvous spot, this colour 
sometimes extending over the entire surface; scutellum obscure fulvous ; elytra convex, widened towards 
the middle, not strongly or closely punctured—the punctures here and there arranged in rows, but for the 
most part irregularly distributed,—of a very dark violaceous or seneous colour, with the following pale 
flavous or whitish markings—a narrow stripe along the basal margin near the scutellum, from which a short 
BIOL. CENTR.-AMER., Coleopt.. Vol. VI. Pt. 1, Suppl., May 1891. 2] 
