330 RHYNCHOPHORA. [ Acalles. 
remain motionless, and may in this state be easily passed over as bits of 
earth or fragments of wood; they bear a strong affinity to Cryptorrhyn- 
chus, but are very much smaller, and have the scutellum wanting or 
almost invisible, and the episterna of metasternum indistinct or concealed 
by the elytra. 
The three British species very closely resemble one another, but may 
be distinguished as follows :— 
I, Upper surface without or with very short raised sete. 
i. Thorax uneven with a broad central furrow ; average 
_sizelarger. . . film tthe pepe of As ROBORTEs Curiae. 
. Thorax compara tively “smooth without central 
fee wre average sizesmaller . . . - . - » A. PTINOIDES, Marsh. 
II. Upper surface with broad raised sete, which are dis- 
tinctly visible if the insect is viewed sideways - « « A. TURBATUS, Bok. 
(misellus, Boh.) 
A. roboris, Curtis (abstersus, Boh., Thoms.). Subovate, pitchy 
black, thickly clothed with round depressed ashy scales, upper surface 
rough and uneven, dull; rostrum stout, bare, ferruginous, with scales at 
base ; vertex of head and two slightly elevated tufts on the fore part of 
the thorax black ; antenne ferruginous ; thorax narrower than elytra, 
about as long as broad, narrowed before apex, truncate at base, slightly 
rounded at sides, with a deep broad depressed channel in middle, and un- 
even at sides; scutellum scarcely visible ; elytra somewhat variegated 
obscurely, rounded at sides and narrowed at apex, with the shoulders 
not prominent, striz deeply and coarsely punctured, interstices narrow 
and convex, furnished, especially towards apex, with very short erect 
dark scales, the third and fifth elevated towards apex into a blunt 
tubercle ; underside pitchy ; legs stout, ferruginous. L. 23-4 mm. 
By. beating dead twigs of oaks, &c.; in hedges in woods; local, but not uncom- 
mon in some districts ; Darenth Wood ; Bexley, Kent; Hertford; Suffolk; Wicken 
Fen; Deal; Hastings district ; Amberley, near Arundel ; Portsmouth district ; 
Llangollen ; Cannock Chase ; Buddon Wood, Leicestershire ; Robins Wood, Repton ; 
Scotland, very rare, Forth district, “ Roslin, Dr. Greville and Rev. W. Little, ” 
Murray’s Cat. 
A. ptinoides, Marsh. Pitchy castaneous, rugose, with large punc- 
tures which are partially filled with ashy or ochreous slightly erect 
scales, forming in fresh specimens four indistinct lines on thorax, and 
collected into more or less distinct transverse bands on elytra ; the mark- 
ings, however, are often very indistinct; rostrum, antenne and legs 
reddish, the former slightly curved, punctured; thorax slightly longer 
than broad, with the sides rounded, and somewhat constricted before 
apex, disc almost even, punctuation much less coarse than that of elytra; 
elytra deeply striated, the strie being coarsely punctured, interstices 
narrow and convex, second and fourth slightly elevated, with two oblong 
black tufts of scales on each (in fresh specimens) ; the average smaller 
size, longer and more even thorax, and the absence of tubercles at the 
