AMERICAN COLEOPTERA. 67 



mnea ; the thoracic tubercles are not prominent, the antennae of the 

 9 are as long as the body; of the S a little longer. 



Larger series of specimens will probably prove that this is only a 

 badly developed form of the species above mentioned. For the 

 present, however, it is more prudent to retain it as distinct. 



XYIiOTRECHVS Chevr. 

 X. planifrons. — Black, finely pubescent; the following parts clothed 

 with bright yellow hair; front except a narrow stripe; slender occipital band, 

 apical and basal margins of prothorax, scutellum, transverse sub-basal spot, 

 transverse band in front of the middle, extending along the suture nearly to 

 the scutellum; transverse band about one-third from the tip, and broad apical 

 margin; beneath with lateral yellow spots on each thoracic segment ; abdo- 

 men with broad bands of yellow hair; antennae and legs brown; frontal cari- 

 nas obsolete. Longte 7.5 — 13 mm. 



California. Very similar in appearance to X. inslgnis Lee, but 

 smaller, with the sides of the prothorax moderately and regularly 

 rounded, not constricted behind; the subbasal spot of the elytra is 

 not oblique but placed transversely ; the prothorax and anterior part 

 of the elytra as usual is clothJed with long erect hairs. What especi- 

 ally distinguishes this speci«rs is that the usual frontal carinas are ob- 

 solete and represented by a scarcely perceptible and very small flat 

 callus. The front is elongated and flat as in other Xylotrechus, or I 

 should be disposed to refer the species to Clytus ; the maculation of 

 the elytra is not very unlike that observed in C. marginicollis. It 

 also agrees with that species and differs from the Xylotrechi, in hav- 

 ing the yellow hair confined to the scutellum and not extendin'"- to 

 the elytra. 



TOXOTUS Serv. 



T. Tirgatus.— Slender, black, finely densely sericeous pubescent, lateral 

 tubercles of prothorax large obtusely rounded, constrictions strongly marked ; 

 elytra with the pubescence transverse; testaceous, suture, discoidal stripe and 

 side margin blackish, tip obliquely subtruncate; abdomen of tne % ferrugin- 

 ous. Length 13 mm. 



Oregon, Vancouver and British Columbia. This species might be 

 mistaken for a variety either of vittiger or vestitus, but on comparison 

 with the latter, which it resembles in the hairs of the elytra lying 

 transversely, the constrictions of the prothorax are deeper and the 

 lateral tubercle more prominent; in comparison with the former, the 

 head is less narrowed behind, the lateral tubercle of the prothorax is 

 larger and more obtuse, and the pubescence of the elytra is different, 

 the discoidal vitta is also narrower, confined to tne upper plane of the 



