19 
(5) Pidonia scripta Lee., 1869, Ann. Nat. Hist., vol. IV, p. 384. 
Length 6 to 9 mm. This species is exceedingly variable in colour and 
maculation. The pronotum may be black, reddish, or reddish with the 
disk black. The colour design of the elytra is, typically, yellow with an 
elongate S-shaped, black marking on the basal two-thirds of each elytron; 
this black marking is usually incomplete, variably broken into spots and 
lines, and in some individuals is almost obsolete. The femora are testaceous, 
variably blackened apically. 
A short series of specimens, taken by Dr. F, E. Blaisdell in the coast 
region north of San Francisco, have the elytra more coarsely punctured, 
but are probably only a local variation. 
Ninety-eight specimens have been examined from California, Oregon, 
Washington, and British Columbia. In British Columbia this species is 
very common on the blossoms of the wild rose. It has also been found in 
Nevada. 
Type locality: Vancouver island, B.C. 
(6) Pidonia densicollis Csy., 1914, Mem. on the Coleop., vol. V, p. 366. 
Although known to us only through the type in the Casey collection, 
this is considered as probably a valid species. It is closely allied to rujicollis 
Say, but has the head and pronotum very densely punctured throughout 
and finely granulate. 
Type locality: North Carolina (Black mountains). 
IDIOPIDONIA new genus 
Allied to Pidonia Mulsant, differing chiefly in having the intercoxal 
piece of the prosternum widened behind, and the forecoxal cavities nearly 
closed behind; the cheeks between the eyes and the base of the mandibles 
nearly as long as the width of the mandibles at the base, and the last ventral 
of the male not excavated. The prosternum is transversely, broadly im- 
pressed and striate, and the first segment of the hind tarsus is densely 
pubescent beneath. Genotype, (Leptura) pedalis Leconte. 
Idiopidonia pedalis Lee., 1861, Proc. Acad. Phila., p, 355. 
Length 8 to 11 mm. This species has the peculiar inflated pronotum 
common to the species of Pidonia, from which it differs by the characters 
given in the preceding paragraph. The body and elytra are black with 
the last ventral segment in some cases reddish. The legs are reddish-test- 
aceous, black or bicoloured, the antennae variably annulated. 
l Seven specimens examined from New York, New Hampshire, Michi- 
gan, New Brunswick, and Ontario. Mr. Leng cites “Anticosti.” 
Type locality: “Lake Superior.” 
GRAMMOPTERA Serville 
1835, Ann. Soc. Ent. France, vol. IV, p. 215. 
Parallelina Csy., 1913, Mem. on the Coleop., p. 247. 
Prothorax campanulate, hind angles acute and moderately produced; 
elytra! apices evenly rounded; metepisternum very slender; forecoxal 
cavities widely open behind; 1st segment of hind tarsus with distinct 
pubescent sole; prosternum convex. Genotype, (Leptura) praeusta Fab. 
