Pityophthorus. | RHYNOHOPHORA. 433 
species, P, Lichtensteinii and P. pubescens ; itis possible that those now 
considered to belong to the former of these species may be proved even- 
tually to be distinct, in which case they must stand under the name 
P. Scoticus, Sharp in. litt. ; the genus is here taken as including only 
the species of Pityophthorus proper and not Tomicus chalcographus, 
bidentatus and quadridens, which were associated with it by Ferrari, 
but are now included under the new genus Pityogenes, Bedel; the 
following description and notes are chiefly taken from Mr. Blandford’s 
account of the genus in the Entomologist’s Monthly Magazine, Vol. II. 
(Second Series), p. 15; the genus, as defined by Eichhoff, presents the 
following characters :—antenne with a five-jointed funiculus and an 
oval non-compressed club, which is constricted by transverse sutures 
dividing it into four distinct joints; thorax as long as or longer than 
broad, bordered at base, and distinctly narrowed in front; elytra cylin- 
drical with simple rows of punctures, and with impunctate interstices ; 
the apex is obliquely truncate, and presents a depression on either side 
of the suture ; it is not armed with spines or teeth, but the raised sides 
of the apical depression and the sutural margins sometimes possess a row 
of small setigerous tubercles. 
All our specimens of so-called P. micrographus must really be referred 
to P. ramulorum, Perris, which latter insect is synonymous with 
the Tomicus pubescens of Marsham; the latter name must therefore 
stand. 
The three species (including P. micrographus for convenience sake, 
and also because it may be mixed with P. pubescens in our collections), 
may be distinguished as follows :— 
TI. Apex of elytra bluntly rounded, not acuminate. 
i, Apical depressions of elytra wide and deep, their 
surface glabrous and shining; size larger , . P. LICHTENSTEINII, Matz. 
ii. Apical depressions of elytra narrow and 
inconspicuous, their surface wrinkled; size 
snrallerees oo oe ee ete bel et (PUB ESCENS, -Alansh: 
II. Elytra acuminate at apex ; + + « « « « « (P. MICROGRAPHUS, Gyll.) 
P. Lichtensteinii, Ratz. (? n. sp. Scoticus, Sharp in. itt.). Similar 
in size and appearance to a small female of Tomicus bidentatus ; cylin- 
drical, convex, shining, pitchy brown or black with dise of thorax and 
elytra lighter, with very scanty fine pubescence on frontandsidesof thorax 
ind sides of elytra. Forehead with strong wriukled punctures, in the male 
with a fringe of yellow hairs above the mouth, in the female with a dense 
brush of yellow hair, forming a circular patch in the middle of the forehead. 
Thorax convex, scarcely longer than broad, strongly narrowed in front, 
sides straight to middle, thence sinuate to apex which is strongly 
rounded, posterior angles distinct, but rounded, disc impressed on 
either side behind middle, covered in front with strong transverse asper- 
ations, the posterior half very shining, with somewhat diffuse punctures, 
deep in male, finer in female, with a broad smooth central line; scutel- 
VOL. V. F f 
