202 =Mr. Jacoby’s descriptions of phytophagous 
This genus will enter the group of Platyxanthine, on 
account of the characters pointed out above; it seems 
nearly allied to Stenoplatys and Metrioidea, but differs 
from the former in the short and robust antenne, the 
want of elytral depressions, and the general narrower 
and elongate shape; from Metrioidea the genus differs 
equally in the shorter antenne and metatarsus of the 
posterior legs. 
Spilocephalus viridipennis, n.s. (Pl. VIL., fig. 12). 
Fulvous; the base of the head metallic-green; thorax biumpressed, 
punctured posteriorly; scutellum black; elytra bright metallic- 
green, closely rugose and punctured. Length, 33 lines. 
Head slightly longer than broad, finely punctured at the vertex, 
the latter metallic-green, the lower portion fulvous; the space 
between the eyes deeply transversely grooved; the clypeus tri- 
angular, with a distinct central ridge, its lower edge concave ; 
antenn robust, less than half the length of the body, the lower 
joints fulvous, the others more or less fuscous; thorax more than 
twice as broad as long, the sides rounded or nearly subangulate at 
the middle, distinctly narrowed towards the base, the posterior 
margin slightly rounded and sinuate, the disc deeply transversely 
depressed, the depression interrupted medially, distinctly punc- 
tured, the anterior portion scarcely visibly punctate; scutellum 
triangular, black, smooth; elytra metallic-green, the punctuation 
arranged in very closely approached rows, the interspaces every- 
where transversely rugose; legs and under side fulvous. 
Hab. South Africa (my collection). 
HAULLIRHOTIUS, N. g. 
Body elongate ; antenne filiform, slender, the third and following 
joints elongate ; palpi very long and slender; thorax transversely 
subquadrate; elytra irregularly punctured, their epipleure con- 
tinued below the middle; tibia mucronate; the first joint of the 
posterior tarsi as long as the two following joints together; claws 
bifid; anterior coxal cavities open. 
Type. Hallirhotius africanus. 
In general appearance Hallirhotius agrees with Mala- 
cosoma, from which the bifid claws at once separate it ; 
the palpi are unusually long, and the thorax is strongly 
transverse but subquadrate. 
