PLATYCOTIS.—OCHROPEPLA. 43 
Two female specimens. This species is allied to Hoplophora humilis, Walk. (List of 
Homopt. Ins. ii. p. 514), but differs in being broader, with the humeral projections. 
much more marked, and also in coloration. A specimen from San Joaquin is figured. 
4. Platycotis histrionica. (Uab. IV. figg. 5, 5 a.) 
Hoplophora histrionica, Stal, Stett. ent. Zeit. 1864, p. 69’. 
Lophopelta histrionica, Stal, Kongl. Sv. Vet.-Ak. Hand]. Band vii. 1, p. 37”. 
Hab. Mexico (Boucard), Omilteme in Guerrero 8000 feet (ZZ. H. Smith), Jalapa. 
(Hoge), Vera Cruz (Mus. Holm.1); Guatemana, Cerro Zunil, San Gerénimo 
(Champion). 
All the specimens yet discovered are females. The dorsal horn in this species varies 
considerably, as in P. tuberculata. Among some unnamed Membracide from the 
Stockholm Museum I found a specimen of a Platycotis similar to those in our collection 
from the various localities mentioned above, and I therefore described them as a new 
species ; but they agreed so closely with the description of P. histrionica that I asked 
Dr. Aurivillius to compare his specimen with the unique type of that species in the 
Stockholm Museum, and he tells me that P. histrionica only differs from the insect in 
question in having the dorsal horn nearly twice as long, and the pronotum reaching 
the apex of the abdomen and more tapering at the end. I have therefore suppressed 
my species, and included it under P. histrionica; had I not very carefully compared it 
with Stal’s description I should certainly have felt justified in treating it as new from 
the fact of its having been sent out as unknown from the Stockholm Museum, which © 
contained the unique type of P. histrionica. We figure a specimen from San Gerénimo. | 
5. Platycotis nigro-rufa. 
Hemiptycha nigro-rufa, Walk. List of Homopt. Ins., Suppl. p. 143°. 
Hab. Mexico! (Mus. Brit.), Xucumanatlan in Guerrero 7000 feet (H. HH. Smith) ; 
GuUATEMALA, Quezaltenango 7800 feet (Champion). 
This insect, which Walker described as a Hemiptycha, although it has nothing in 
common with that genus, is a very distinct Platycotis of a brick-red colour variegated 
with black. It is of about the same size as the preceding species. The two examples 
in our collection are mostly griseous, and may belong to another species, though they 
do not appear to be sufficiently different structurally to be separated. 
OCHROPEPLA. 
Ochropepla, Stal, Ofv. Vet.-Ak. Frh. xxvi. p. 268 (1869). 
This genus contains three or four small species from Central America and the 
adjoining regions ; they are mostly of a unicolorous testaceous colour, uccasionally with 
dark markings on the head and on the front of the pronotum or on the tegmina; the 
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