152 {December , | 
Prenrpium KRaarziil, n. s. 
Differs from Pé. formicetorum in its longer and narrower shape, 
smaller size, and much deeper sculpture, especially on the head and 
thorax. 
T have two specimens of this insect, taken by the late Mr. Foxcroft 
in Scotland. 
PTENIDIUM ATOMAROIDES, Mots. 
This species is easily distinguished from Pt. evanescens by the 
smaller size of its head and thorax, and much longer and broader | 
elytra. 
T received a Ptenidiwm some time ago from Mr. Crotch, taken by | 
himself (I believe near Brandon), which clearly belongs to this species, — 
TRICHOPTERYX FUSCULA, 0. 8. 
L. c. x lin. Short, quadrate, covered with long brown hairs. 
Differs from Z. brevis in its parallel form and long slender antenne. 
This peculiar and distinct species I found some time ago near ~ 
Gumley. 
TRICHOPTERYX LONGULA, n. 8. 
Differs from . picicornis in its shorter and narrower thorax, 
longer and more slender antenna, and closer and finer sculpture. 
Two specimens of this insect have been taken by myself in this 
part of the kingdom, aud two others by Mr. Wollaston near Tonbridge. 
TRICHOPTERYX RIVULARIS, Allibert. 
Differs from 2. Montandonii in its more elongate form, longer 
thorax, elytra more contracted at their apex, and disposition of the 
sculpture. 
T have long hesitated to separate this and some other allied forms 
from TL. Montandonii; but am now convinced that to preserve any 
specific uniformity their separation is inevitable. T. rivularis is: not 
uncommon in this country. 
Tricnopreryx Eprruta, n. s. 
L. c. x% lin. Elongate, convex, griseous-brown, covered with long 
sericeous pale hairs, head large and wide, eyes not prominent, antennze 
very long and slender, bright yellow; thorax moderate, sub-quadrate, 
with the sides much rounded, widest near the middle, covered with 
small tubercles irregularly arranged, with their interstices shining and 
deeply reticulate, posterior margin depressed and slightly reflexed, 
with its angles produced and acute; elytra rather longer than the 
