THE CANADIAN EWTOMOLOGIST 157 
Blatch., but can be distinguished from it at once 1)\- the absence 
of the humeral spot on the elytra. 
There is a slight variation in the colour of the antenna' in the 
two specimens at hand, the type having the apical angles of each 
joint >^ellow, whereas the antennae are entirely unicolorous in the 
paratope. This difference may prove to be sexual on the examina- 
tion of a large series. 
M. frosti should follow M. confusa in a systematic arrangement. 
Mordellistena masoni, sp. nov. 
Hind tibia with four strongly marked oblique ridges (and a 
very small rudiment of a fifth); first joint of hind tarsus with 
four, second with two ridges. 
Subcuneate; head and thorax dark reddish brown, covered 
with fine golden yellow pubescence; antenna?, legs and underside 
a little paler; elytra dark brown, with silky, golden pubescence 
forming the following pattern, — an oblique banci from humeri 
nearly to suture, an entire marginal line, widest at the middle, 
where it forms an abbreviated band, a sutural streak, an apical 
blotch connected with the marginal line, and several spots located 
between the bands; anal style long and slender, black at tip. 
Length 4 mm. 
Five specimens: two from Hemlock Falls, New Jersey, July 
10; two from Eagle Rock, New Jersey, July 8; and one from West- 
ville, New Jersey, July 21; all collected by Mr. Frank R. Mason. 
The type, from Hemlock Falls, New Jersey, is placed in the 
writer's collection, paratypes in the collection of Mr. F. R. Mason, 
to W'hom this species is dedicated. 
This species is nearest M. cinereo-fasciata Smith, differing from 
it in having a narrower form, and no pale humerkl spot. It can 
be readily recognized by the presence of light pubescent spots on 
the dark area. In two or three specimens the middle band reaches 
nearly to the suture, and the marginal line is partly broken, sug- 
gesting that further variation may be found in a large series. 
This should follow M. cinereo-fasciata in the systematic ar- 
rangement. 
Mordellistena nunenmacheri, sp. nov. 
Hind tibia with three short, slightly oblique ridges; first joint 
of hind tarsus with three, and second with two ridges. 
