160 



tra; marked with numerous rows of minute impressed dots. Under- 

 side, femora and tibae reddish-yellow ; tarsi dull black or dusk}-. 



Fidia viticida. Walsh. (The Grape-vine Fidia.) 



The following account of this species, with which I am not ac- 

 quainted, is taken from Prof. Riley's first report.* 



It is of a chestnut brown color, and is densely covered with short 

 whitish hairs, which give it a hoary appearance. I have 

 found them very thick in most of the vineyards which I visited, and 

 it is almost universally miscalled the "rose-bug," which is, however, 

 a very different insect. The grape-vine Fidia was first described by 

 Mr. Walsh in the May (1867) number of the Practical Entomologist. 

 It is found in the woods on the wild grape-vine and also on the leaves 

 of the Cersis Canadensis, but of the tame vines it seems to prefer the 

 Norton's Virginia and Concord. It makes its appearance during the 

 month of June, and by the end of July has generally disappeared, 

 from which fact we may infer that there is but one brood each year. 

 The manner in which it injures the vine is by cutting straight, 

 elongated holes of about one-eighth inch in diameter in the leaves, and 

 when numerous it so riddles the leaves as to reduce them to mere 

 shreds. The preparatory stages of this beetle are not yet known. 



Remedies. — Luckily this beetle has the same precautionary habits 

 of dropping to the ground, upon the slightest disturbance, as has the 

 plum curculio, and this habit enables us readily to keep it in check. 

 The most efficient way of doing this is by the aid of chickens. Mr. 

 Paschell, of Hermann, on whose vines this beetle has been exceed- 

 ingly numerous, raised a large brood of chickens in 1867, and had them 

 so well trained that all he had to do was to start them in the vineyard 

 with a boy in front to shake the vines, and he himself behind the 

 chicks. They picked up every beetle which fell to the ground, and 

 in this manner he kept the vines so clean that he could scarcely find 

 a beetle in 18(38. 



Professor Riley remarks that it is one of the worst foes the grape- 

 grower has to contend with in Missouri; it has also been found in 

 some vineyards in Illinois. 



DoRYmoRA ten-lineata — Say. (The Colorado or Ten-striped Potato- 

 beetle.) 



Synonyms. — Chrysomela 10-lineata, rolygramma 10-lineata, Myocoryna 

 10-lineata. 



This destructive and notorious potato-beetle as will be seen by the 

 above list of synonyms, although retaining without change its specific 

 name, 10-lineata or decem-lincata, given by Say in consequence of ten black 

 lines on its wing-cases, has been placed in various genera. Although 

 the most recent catalogue of North American Coleoptera (that by 

 Crotch) places it in Chrysomela, I prefer retaining the generic name, 

 Doryphora, by which it is now almost as well known as by its common 

 name. 



In my premium essay on " Insects Injurious," to vegetation in Illi- 

 nois, written in 1862, but unfortunately not published by the State 

 Agricultural Society until 1865, I named it the "Ten-striped Potato- 



*Since the above was written I have met with it. 



