Scolytus. ] RHYNCHOPHORA. 409 
ceding, but is easily distinguished by the sculpture of the elytra, 
which have the punctured striz much less strongly impressed and the 
punctures of the interstices not much finer than those of the striz and 
arranged in single rows; it is also a little narrower; the colour is 
shining black with the elytra ferruginous, and the antenne and greater 
part of the legs are red ; the thorax is very finely punctured on disc and 
less finely but not very closely at sides, and the ventral segments of the 
abdomen are simple in both sexes. L. 35-43} mm, 
In decaying apple, apricot, pear, cherry and other fruit trees; Ratzeburg has 
also found it in whitethorn and elm ; very local, but not uncommon where found 3 
Peckham ; Hammersmith (Stevens) ; Tonbridge (Horner) ; Southsea, on black- 
thorn (Moncreaff); Monmouthshire and Herefordshire, freely (Chapman) ; Lindow 
and Urmston, Cheshire (Chappell); Stretford, near Manchester (Reston) ; Scar- 
borough (Lawson). 
(S. carpini, Ratz. This species is very closely allied to the preceding, 
but is smaller, and may be distinguished by having the punctuation of 
the thorax stronger and closer at the sides, and the punctuation of the 
strize and the interstices equally strong, whereas in S. pruni the punc- 
tuation of the interstices is a little finer ; the general punctuation of 
the elytra is also less regular than in the last mentioned species, L, 
3-3} mm. 
This species occurs in France, Germany and Austria, on the Horn- 
beam (Carpinus betulus), and has been introduced into one or two of our 
collections, but I know of no authentic specimen, although it very prob- 
ably occurs in Britain ; in fact, Mr. E. W. Janson has seen workings in 
Hornbeam which were almost certainly to be referred to it; the differ- 
ences between the species and S. pruni are so very slight that the two 
insects may very easily be confused. ) 
S. intricatus, Ratz. Black, shining, elytra duller, with the 
antenne and legs ferruginous, and the femora and elytra pitchy-brown 
or pitchy-red, the latter with very close rows of punctures and extremely 
narrow interstices, more or less rugose, with short erect yellow bristles 
at sides and towards apex; underside with close grey pubescence; 
thorax longer than broad very finely and rather closely punctured on 
dise, more closely and sub-rugosely punctured at sides ; suture depressed 
behind scutellum ; the colour is variable, the thorax oceasionally being 
reddish. L. 3-4 mm. 
Male with the forehead depressed and clothed with short thick fuscous 
villose pubescence. 
Female with the forehead convex and somewhat strigose. 
In decaying oak; not common; Darenth; Chatham; Forest Hill; Dulwich ; 
Hastings district ; New Forest; Monmouthshire and Herefordshire rare (Chap- 
man); Sherwood Forest ; Dunham Park, Manchester 3 Northumberland and Dur- 
ham district, rare, Little Benton. 
S. rugulosus, Ratz. The smallest of our species ; black, shining, 
