30 HETEROPTERA OF EASTERN NORTH AMERICA. 



as wide as the length of the point. The best glue which I have 

 found for mounting is Kay's "Coaguline," which does not de- 

 teriorate with age and when too thick is thinned by the simple 

 addition of a drop or two of water. It is made at Stockport, 

 England, and comes in two-ounce vials. Bueno recommends a 

 glue "made of clear white granulated cooking gelatine dissolved 

 in glacial acetic acid and fairly thick." 



Museum Pests. — All soft-bodied Heteroptera are subject 

 to the attacks of museum insect pests, such as Dermestids, etc. 

 They should, as far as possible, be kept in insect-proof boxes. 

 Flakes of naphthaline kept in each box will usually serve as 

 a repellant for such pests. Each box should be examined 

 three or four times a year, and if by dust, exuvia or other 

 debris, the presence of pests is indicated, a few drops of carbon 

 bisulphide should be poured in the box and the lid quickly 

 closed. The vapor of this will soon destroy the eggs, larvae 

 or other living form of any pest. However, its vapor is ill- 

 smelling, poisonous and easily inflammable, and a safe and 

 equally effective remedy is proposed by Bueno. It is the 

 paradichlor-benzine, used by horticulturists in killing peach 

 tree borers. A little of this dissolved in carbon tetrachloride 

 and poured into the box will soon vaporize and the vapor 

 quickly kill all living forms therein. 



"Joy's soul lies in the doing, 

 And the rapture of pursuing 

 Is the prize." 



