6o The Ottawa Naturalist. [June 



I 



rich black with bright yellow markings ; one of the yellow bands 

 across the elytra is shaped like a W ; the legs are also yellow 

 but the antennae are black. When flying this beetle much 

 resembles a big wasp and I have seen persons, n ear whom one 

 has happened to circle in its flight, very much afraid of being 

 stung by it. Calloides nobilis Say is almost as big, but is more 

 sombre in appearance, being entirely black, except the markings | 



o.i elytra, which sometimes are reduced to a few yellow spots. 

 Cyllene robini(B Forst., slightly smaller, is a very wasp-like looking 

 species with numerous transverse yellow bands, and red legs and J 



antennae. It is one of our most obnoxious cerambycids, as its 

 grubs bore and tunnel m the Locust-trefes to such an extent as 

 to have killed nearly all such trees in the city. Arhopalus, 

 Xylotrechus, Neoclytus and Clytanthus contain species of 

 moderate size with more elongated thorax, and more cylindrical 

 in shape. They are generally more or less banded with white 

 or yellow. Microclytus, Cyrtophorus and Euderces are some- 

 what ant-like in form, especially the second, whose representa- 

 tive, C. verrucosus is a common species. 



Tribe XIII, Atimiini, has one representative of rare occur- 

 ance, viz. Ativiia confusa Say, a pale brownish beetle about one- 

 third of an inch long, mottled with pale pubescence. 



Tribe XV. Desmocerini, has as its representative here 

 Desmocerus palliatus Forst., perhaps the most brilliant of our 

 longhorns, although, unfortunately, it loses in the cabinet a 

 certain degree of its beauty by fading. When sunning itself upon 

 the elder-bushes in midsummer it is a very striking and beauti- 

 ful insect, its general colour varies from a rich purplish-blue to 

 steel-blue, and a broad yellow band across the base of the elytra 

 gives to it the appropriate name of the Cloaked Beetle. 



Tribe XVII,Encyclopini, contains one slender bluish species, 

 E. cceruleus Say, which is very rare in this locality. 



Tribe XVIII, Lepturini, is the one best represented, as we 

 have ten genera with thirty species. These are usually of moderate 

 size, and none are very small. Rhaghun lineatuiii Oliv. differs 

 from most of our cerambycids in having the antennae quite short, 



