220 



SCHOOL ENTOMOLOGY 



excess of crystals of corrosive sublimate in water in a granite 

 or porcelain vessel (not iron), then cooling and filtering 

 through cotton. Soak cotton tape or heavy cotton string 

 in this for several hours and then dry. It must not come in 

 contact with any iron, tin or aluminum. Corrosive subli- 

 mate is poison and should be handled with care. Naphtha- 

 lene, gum camphor, carbolic acid, and gasoline are also said 

 to be objectionable to ants and when sprinkled about their 

 haunts will help drive them away. 



130. The Clothes Moths. The little yellowish moths 

 which sometimes flit about a light at night will quickly set 



FIG. 154. The clothes moth (Tinea pellionetta) . Enlarged. (From 



Riley). 



Above, adult; at right, larva; at left, larva in case. 



the good housekeeper to looking over her furs and woolen 

 clothing for the presence of clothes moths (30). The moths 

 themselves are entirely harmless, but she has learned from 

 experience that where they occur some injury is probably 

 being done, and that if they are not destroyed, they will give 

 rise to further trouble. Other moths are frequently con- 

 fused with clothes moths but usually the latter may be 

 distinguished by the fringe of long hair on the hind wings, 



