I HYSANURA. 



543 



will have to be included in the list of insects injurious to Agricul- 

 ture Their habits arc various ; some live in flowers and doubtless 

 devour the pollen, a few produce galls in which they live, and many 

 live on leaves (especially in the shelter of the leaf-sheath in crops 

 such as cholam), piercing and eating the green matter. No practi- 

 cal treatment can be recommended pending further study of the 

 species concerned. 



THYSANURA. 



LEPISMID/E. 

 CTENOLEPISMA Sp. 



Fig. 438. — Ctenolepisma >p. The outline figure shows the natural 

 (Original.) 



Distribution. — Throughout Southern India. A domestic species 

 occurring in houses amongst papers, books, pictures, etc. 



Lifehistory. — Eggs are laid amongst papers, etc. The life-cycle 

 is apparently a long one, taking about two years from egg to 

 adult. 



Status. A regular household pest, frequently doing consider- 

 able damage to papers, office tiles, pictures, etc. 



Control. -Books should be treated with Book Solution regularly, 

 .it least once a year, it kept in open shelves. Pictures should be 

 painted over their backs with Naphthaline Emulsion and their 

 frames thoroughly well made and closely lined with tin. Books 

 in closed shelves, papers in boxes, etc., may be protected by 

 naphthaline. (See also page \J2. i 



Remarks. These Fish-insects in Southern India do not seem to 

 be >on trolled by Croce as in Northern India. 



