THE CANADIAN ENTOMOLOGIST. 223 



good a vesicant as some others ; the proportion of hard tissue in its 

 structure is lar#e as compared with the softer and more active portion, too 

 large, perhaps, to admit of its being of much value. 



3. Mylabris dehor ii Linn. — All parts of this insect are black, except- 

 ing the wing-covers, which are of an obscure yellow, with three transverse, 

 black, irregular, undulating bands, the one at the apex broadest. The 

 first band is sometimes interrupted, and occasionally reduced to three or 

 four spots. 



Found in abundance in the southern portions of China, and also 

 throughout India, on the flowers of the wild chicory and other composite 

 plants. It is also said to occur in southern Europe, extending from Italy 

 through Greece and Egypt to China. For further details in reference to 

 this insect the reader is referred to an interesting and valuable paper by 

 Prof. Maisch, in the volume of Proceedings for 1872, p. 246. 



4. Macrobasis albida Say. — All parts of body black, densely covered 

 with minute greenish or yellowish-white hairs. The thorax is slightly 

 longer than wide, the wing-covers broader than the thorax, becoming 

 wider behind, and are densely punctured. 



Abundant in Texas, New Mexico and on the plains. 



5. Macrobasis atrivittata Lee. — Also black ; form more elongated 

 than albida ; head thickly clothed with fine black hairs, with a small white 

 space in front of the eyes ; thorax with grayish hairs, with a large black 

 space in the middle \ the wing-covers have black hairs, and their apex 

 and sides are margined with gray ; there is also a moderately broad gray- 

 ish stripe extending from the humerus to near the apex. 



Found in Texas, and is probably quite abundant, but we have not been 

 able to obtain definite information on this point. 



6. Macrobasis segmentata Say. — This insect is black also, with the 

 segments of the body beneath margined with whitish. The thorax is 

 nearly as broad as long, and its posterior edges are grayish. Wing-covers 

 finely punctured and sparsely covered with short black hairs. 



Occurs with M. albida, and is also abundant. 



7. Epicauta vittata Fab. — The head of this species is of a light red- 

 dish color, with darker spots ; antennae black ; thorax black, with three 

 yellow lines ; wing-covers black margined with yellow, and with a yellow 

 stripe down the middle. Abdomen and legs black, covered with grayish 

 hairs. 



