250 
MEMBRA CIDsE. 
OPHICENTRUS NOTANDUS. 
Fowl. l.c. Tab. IX. fig. 26. 
Taken at 2500 to 4000 feet elevation. This species I have not seen, but two others 
I add below as doubtless belonging to this genus although they are not American. 
Habitat. —Panama. 
OPHIOENTRUS VARIPENNIS, n.s. 
(Plate LVII. figs. 1, la.) 
Rugose. Metopidium high and tumid. Suprahumerals short, recurved, 
divergent, and not easily seen by the profile view. A stout process rises between them, 
with a knob from which a marked serpent-like, sinuous horn is continued to the apex 
of the tegmina. Colour uniformly umber-brown, which prevails on the stout and 
hirsute legs. The tegmina smoky hyaline and paler, with dark brown neurations 
enclosing five apical areas, more or less rounded in shape, bordered by a distinct 
limbus. The metopidium is hirsute. 
Habitat .—Old Calabar. 
Probably this insect is allied to Centrotus varipennis of Sign., l.c. p. 337 and Stal, 
l.c. p. 95, which has apparently the same habitat. 
OPHIOENTRUS TRISPINIFER. 
(Plate LVII. figs. 2, 2a.) 
Centrotus trispinifer, Fairm. l.c. p. 515. 
Somewhat of the same colour as O. varipennis , but the origin of the posterior 
horn is developed into an erect process before it is continued backward over 
the abdomen. In this position, between the two suprahumerals, the appearance is 
as if it were tri-spined. The tegmina are fuscous, and the membranes are corrugated, 
with warm brown veinings. There is a white patch on the scutellum. The posterior 
horn is strongly sinuous, as in the last species. 
On account of this serpent-like character, but with some doubt, I include this 
species in the genus Ophicentrus. In the British Museum there are specimens 
labelled trispinifer from Tasmania, which is the same habitat given by Fairmaire in 
his “Revue des Membracides.” My specimen retains the fine setaceous antennae 
issuing from the pilose frons. 
OPHICENTRUS CURYICORNIS, n.s. 
(Plate LVII. figs. 3, 3a.) 
Metopidium high. Suprahumerals rather long, acute, arcuate, and curved at 
their tips. Pronotum roughly punctured at the bottom of fine furrows. Colour 
