234 LONGICORNIA, [ Pachyta. 
i. Form broader and less parallel ; pubescence 
and punctuation coarser ; elytra yellow with 
black markings . . . . . + . © « « P. CERAMBYCIFORMIS, Schrank. 
(octomaculata, Schall.) 
ii. Form narrower and more parallel ; pubescence 
and punctuation finer ; elytra black, with three 
pale yellow, transverse, angular bands . . . P, seExMAcuULATA, L. 
II. Eyes entire; thorax red; elytra bluish-black 
(s.g. dem@ops, Lec.) . . . - .. + + + P. COLLARIS, L. 
P. cerambyciformis, Schrank. (octomaculata, Schall. ; s.g. Iudolia, 
Muls.). Black, clothed with greyish pubescence, which is thickest and 
longest on the thorax, elytra testaceous, with four variable spots on each, 
two behind base situated in the same more or less oblique line and often 
confluent, one just behind middle, and the fourth at apex; head con- 
siderably produced before antennz, closely punctured ; thorax broadest 
behind and narrowed in front, with posterior angles somewhat pro- 
jecting, closely punctured; elytra broad in female, narrower in male, 
rather closely but distinctly punctured ; legs and antenne black; in 
the male the general form is smaller and narrower than in the female, 
and the antenne are longer in proportion. L, 8-12 mm. 
On flowers of Umbelliferaa, &c.; very local; Colney Hatch; Haslemere ; New 
Forest ; Devon, Ashburton and Barnstaple; Swansea; Dean Forest; Malvern; 
Bewdley Forest (in abundance); Cumberland; Northumberland and Durham 
district; Scotland, extremely rare, Tweed district, ‘‘once taken in Peasedean, 
Berwickshire, Mr, Hardy,’”? Murray’s Catalogue. 
P. sexmaculata, L. (trifasciata, F.; s.g. Iudolia, Muls.). Closely 
allied to the preceding, but may be distinguished by its narrower and 
more parallel form, more shining appearance, the much scantier and 
finer pubescence, finer punctuation, blacker colour, and shorter basal 
joint of the posterior tarsi. The elytra also are differently marked, 
being black, with three pale yellow, transverse, angular bands, one at 
base, one a little before the middle, and one at about two-thirds of their 
length. L. 8-11 mm. 
Two specimens taken by Mrs. King on fir palings immediately adjoining the 
Rothiemurchus Forest, Aviemore, Inverness-shire, on June 380th and July 2nd, 1877 ; 
the species is rather common in Sweden, North Germany, &c. 
P. collaris, L. (Acmeops collaris, Lec.). Smaller than either of 
the preceding, and easily distinguished by having the eyes entire, and 
by its colour, which is entirely black or bluish-black with the thorax 
bright red ; the abdomen also is red; upper surface clothed with long 
fuscous pubescence ; thorax much narrower than elytra, narrowed in 
front and broadest behind, diffusely and finely punctured ; elytra sub- 
parallel, with shoulders well marked, depressed on disc, rather closely, 
but strongly and somewhat rugosely punctured ; legs rather long, black. 
L. 7-9 mm. 
