THE STATE ENTOMOLOGIST. 131 



fected, the others are dwarfed and imperfect ; and where two large 

 seeds are found they are both occupied. Where one seed only is af- 

 fected and the other remains healthy, the one normal seed carries the 

 berry through in an apparently healthy state to ripeness. As tar as 

 our experience goes the Clinton and its allies with thin skins are more 

 liable to attack than berries with thicker skins, such as Hartford Pro- 

 lific and Concord. 



THE GR APE-CANE GALL-CUROULIO, Madams vitis, New Species 



(Coleoptera, Curculionidio.) 



The canes of the Concord vine are frequently found to have galls 

 on the last year's growth, in the shape of an elongated knot or swell- 

 ing which is generally situated immediately above or below a joint. 

 This gall was formed the previous fall while the tender cane was grow- 

 ing, and has almost invariably a longitudinal slit or depression on one 

 side, dividing that side into two cheeks, which generally have a rosy 

 tint. The gall is caused by a little footless, white cylindrical larva 

 which measures 0.28 of an inch, and has a yellowish head, and some- 

 what darker tawny jaws. It is minutely wrinkled transversely, and 

 sparsely covered with minute white bristles; the three segments next 

 to the head being prominently swollen underneath and the bristles 

 attached to them look very much like legs, and doubtless to some ex- 

 tent perform the functions of legs. This larva indeed bears a very 

 close general resemblance to that of the Potato Stalk-weevil, illus- 

 trated at page 93, Figure 37 a, and when taken out of its gall immedi- 

 ately curls up as in that figure. During the latter part of June this 

 larva transforms within the cane to a pupa, also greatly resembling 

 that figured at J, on page 93, with the exception that it is much 

 smaller, and that the wings and legs reach down three-fourths the 

 length of the body instead of but one-half as in that species. Two 

 weeks after it has thus transformed it becomes a beetle belonging to 

 [Fig. 7-1.] the great Curculio family. Before this insect had ever 

 been bred to the perfect state I predicted that it would 

 produce a Curculio, as may be seen by referring to page 

 117 of the Transactions of the Illinois State Horticultural 

 Society for 1S67. This beetle is represented enlarged at Fig- 

 ure 74, its natural length being 0.10. It is of a uniform 

 light yellowish-brown without any markings whatever. It 

 is closely allied to the Potato Stalk-weevil, but belongs to the genus 

 Madams which differs from Baridius in the peculiar undulating ap- 

 pearance of the wing-cases, and more especially in their being highly 

 polished, the word Madams meaning glossy or polished. This little 



