CATALOGUE SLIPS. 



Connecticut. State geological and natural history survey. 



Bulletin no. 31. Check-list of the insects of Con- 

 necticut. By Wilton Everett Britton. Hartford, 1920. 



397 pp., 23 cm . 



Britton, Wilton Everett. 



Check-list of the insects of Connecticut. By Wil- 

 ton Everett Britton. Hartford, 1920. 



39" pp., 23™. 

 (Bulletin no. 31, Connecticut geological and natural history survey.) 



