94 THE CANADIAN ENTOMOLOGIST. 
The type of this subgenus is Ca//idium triste Fabr. for those with cla- 
vated thighs, and C. awlicum, for those in which they are incrassated 
nearly their whole length. These insects will be found to have four dis- 
tinct eyes, separated by the substance of the head elevated into a ridge, 
which at first sight appears a continuation of the eye, but which evidently 
has no lenses implanted in it—they are also distinguished by their hee 
and short antennae. : 
231. CaLLIDIUM (TETROPIUM) CINNAMOPTERUM Azrby. Plate y, fig. 
8. Length of body 314 to 6 lines. Several specimens taken in Lat. 65°. 
At first sight this species seems the exact counterpart of Cad/idium 
triste, which it resembles in almost every respect ; but upon examination 
it will be found that the thighs of these two insects are of a very different 
shape, those of C. 7° #risle being much attenuated at the base, while those 
of C. T° cinnamopterum axe not at all. In the latter also the sides of the 
fore-breast are red, and the elytra are considerably darker, very near the 
colour of cinnamon. 
The American specimens vary much in size, but all agree in the shape 
of the thighs. 
[Taken at Ottawa, Ont., by Mr. Billings; Lake Superior (Agassiz.) 
Not common. | 
[175.] 232. CLyrus unDaytus A7rby.—Plate vu, fig. 5. Length 
of body 8 lines. Two specimens taken in Lat. 54°, 65°. 
Body black, underneath hoary from decumbent hairs, above velvetty. 
Head anteriorly hairy with whitish hairs, behind the antennae very thickly 
punctured ; palpi, labrum, tip of the nose and cheeks, eyes, antennae, and 
subface rufous ; prothorax rough with very minute and numerous granules, 
the base and apex have an interrupted band of yellow hairs, and a hoary 
spot on each side produced by hairs; scutellum dark brown : elytra with 
an oblique linelet adjoming the scutellum, another in the disk near the 
base, two wavy bands, the extremities of the anterior one pointing to- 
wards the base, and of the posterior one towards the apex; the apex and 
suture, all pale yellow, produced by decumbent hairs : underneath on each 
side of the breast are three spots of the same colour, as likewise is the 
tip of the ventral segments of the abdomen; the legs are rufous, sprinkled 
with hoary hairs. 
[A variety of C. undulatus Say.—Ent. Works, i, 119, plate 53. Taken 
during Long’s second expedition by Say; Lake Superior (Agassiz); and 
throughout Canada West. } 
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