1 01 



APPENDIX 



The Mexican Cotton Boll Weevil and Some of 

 the Insects Most Frequently Mistaken for it. 



For the sake of facilitating comparisons a figure of the 

 boll weevil is included on Plate II. Fig. 1. All figures have 

 been taken at the same magnification of approximately four 

 diameters. 



In this list the "rice weevil," {Calanclra oryzae Linn). PI. 

 IT, fijr. 2, has been included not so much because it has 

 been, or may be, mistaken for the boll weevil, as because its 

 size and general api)earance may be more familial to the 

 general reader than any of the other species mentioned. A 

 comparison of the adult insect with the illustration may 

 aid in conveying a more correct conception of the other less 

 familiar species. This weevil breeds very abundantly in 

 corn, but does not injure cotton. 



The "plum curculio". {Conotrachchis ncnupliar Hbst.), 

 PI. IT. fig. .'?, which attacks peaches, plums, etc., very com- 

 monly, is about the size of the boll weevil but is much dark- 

 er in color with markings of white or light colored scales on 

 its back and legs. It has a shorter, more strongly curved 

 snout and but a single tooth upon the thigh of the fore legs. 

 It never attacks cotton. 



The "v.'hite pine vreevil", (Pissodcs strohi Peck.), PL TI. 

 fig. 4. occurs in Alabama and must attack also some south- 

 ern s])ecies of pine. The body is longer and more cylindri- 

 cal, while the snout is relatively much shorter than in the 

 boll weevil. Its wing-covers bear each a prominent white 

 spot toward their tips. 



The "pales weevil", (HyloMiis pales Hbst.) PI. II, fig. 8, 

 iS another species which attacks pine. It is a large species, 

 being from 1-3 to 1-2 inch long. Its color is a dark brown 

 with small spots of light colored scales scattered over the 

 wing-covers. This species is very common in Alabama. 



The "cow -pea pod weevil," {Chalcodermus oencus Boh.), 

 PI. II, fig. 7, is often taken on cotton following a crop of 

 cow peas in the same field or near vicinity. It is the only 

 one of the specie^ mentioned bereswith wjiicl^ niay do sora^ 



