100 
MEMB UACIDJE. 
Genus: PLATYCOTIS, Stal. 
Yet. Akad. Hand], (2) 8 (1), p. 36 ; Fowl. l.c. p. 41. 
Differs from Hoplophora in the greater breadth of the head, and that the pronotum 
is not subparallel behind the shoulders, and also not shield-shaped; the feeble tarsi of 
the hind legs, however, are retained by all the species of the genus. 
PLATYCOTIS TUBERCULATA. 
(Plate XXI. fig. 1 ? , fig. la 3, fig. lb.) 
Faiim. l.c. p. 273, PI. VI. fig. 9 ; Hoplophora ornata (?), Fairm. l.c. p. 274; Lophopelta 
tuberculata, Stal. l.c. p. 37 ; Fowler, B.C.A. Tab. IV. fig. 2, p. 42. 
Pronotum with, a blunt, flat anterior horn protruded, in an almost straight line with 
the dorsum. This character separates the insect from Umbonia r/tadius, which it 
resembles ;general colour bright yellow, and punctured ; the horn has a conspicuous red 
stripe on each side, two semicircular red stripes on the shoulders, and a red stripe 
on the marginal straight border; tip of the horn blackish ; tegmina greyish-hyaline, 
with brown nervures ; legs yellow ; middle tibiae fringed with hair; the hind tarsi very 
short; metopidium with three or four spots on the Irons. 
The male is slim and bright in colour, but it wants the anterior horn of the female ; 
the dorsal edge, therefore, is straight and then smoothly convex ; abdomen yellow, 
and ringed with brown. 
Size, 13x6 mm. 
Habitat. —Mexico up to 7000 feet elevation ; Talapa, California. 
Fairmaire thus describes Hoplophora ornata as a new species. “Virescens pro- 
thoracis cornu rotundato apice rubro but it probably is only a variety of P. tuber- 
culata. The elytra “ presque noires a la base, et marquees de deux taches vert pale,” 
perhaps is hardly sufficient for its specific separation. 
The proportions of the pronotal horn are not constant in all examples, and some¬ 
times it is entirely wanting. 
PLATYCOTIS SICULA, n.s. 
(Plate XXL figs. 2-2a.) 
Dark brown in colour, very rugose and punctured ; pronotal horn rather curved 
forwards, black with a red dash on each side ; tegmina brown and rough ; pronotum 
with the front carina broadly pitted ; middle tibiae not hirsute. 
Size, 11 x 7 mm. 
Habitat .—Am azons. 
Wollaston Collection. 
