252 LONGICORNIA. [Saperda. 
Britain ; of these S. carcharias is one of our largest Longicorns, and S. 
scalaris, when fresh, is certainly one of the handsomest; the larve of 
our species are found in poplar, aspen, willow, &ce. ; they are almost 
parallel-sided, the prothorax being only a seventh part broader than the 
eighth abdominal segment, and are furnished with very minute legs ; 
the anal segment is trifurcate. 
1, Size very large ; elytra thickly clothed with grey or brown 
pubescence, without distinct bands or patches of a lighter 
atid 5 . S. carcHarias, ZL. 
Il. Size moderate ; ‘elytra with distinct light bands or spots. 
i, Thorax strongly depressed before middle and at base ; 
oer almost smooth . . SS. SCALARIS, D. 
. Thorax very slightly depr essed before middle ‘and at base; 
“aise closely punctured . 585 oO 0 Fo me Saou i, 
S. carcharias, L. ( vances De G.; s.g. Anerea, Muls.). One of 
the largest and most conspicuous of the British Longicorns ; black, clothed 
with yellowish or ashy grey pubescence, which is thicker and longer 
on the under surface than on the upper, and is somewhat variable in 
colour, so that the insect appears to vary from quite a light grey to an 
ochreous yellow ; head large, antenne tapering, with the apical joints not 
ringed with white ; thorax slightly transverse, coarsely and rugosely 
punctured, with a central line and a tubercle on each side of it, which 
are usually covered with pubescence ; scutellum large, semicircular ; 
elytra broad, with well-marked shoulders, gradually narrowed to apex, 
which terminates at suture in a short blunt spine, very coarsely and 
deeply punctured, with a transverse patch of closer pubescence on each 
about middle ; legs short and stout, pubescent, extreme apex of femora 
usually black. L. 20-28 mm. 
Male with the antenne a little longer than the body, and the elytra 
more narrowed behind ; female with the antenne a little shorter than 
the body, the elytra slightly narrowed behind, and the fifth ventral 
segment of abdomen with a fine channel towards base. 
In and about old willows; local and, as a rule, confined to the fen districts, in 
which formerly it was rather common; Ely; Soham and Wicken Fen, Cambridge ; 
Lincoln ; Croncliff, near Scarborough (Wilkinson) ; also recorded from the Forest of 
Dean; Scotland, very rare, on aspen, Moray and Sutherland districts; it probably 
occurs along the whole of the eastern counties from Yorkshire to Norfolk. 
S. scalaris, L. A very handsome and conspicuous species, elongate, 
subparallel, depressed, black, slightly shining, with the under-side densely 
clothed with bright yellowish-green pubescence ; head broad, thickly 
clothed with bright yellowish-green pubescence, a spot at base being 
denuded ; thorax transverse, coarsely and irregularly punctured, with 
the disc and a spot at each side bare, the rest being clothed with the 
same pubescence as head ; elytra considerably broader than thorax, with 
the shoulders strongly marked, very slightly narrowed before apex, with 
a strong scalariform line of bright yellowish-green pubescence (as on 
head) running from base to apex, and several patches and spots of the 
