CATALOGUE SLIPS. 



Zoology. 



Britton, W. E. Check-list of the insects of Con- 

 necticut. Hartford, 1920. 



397 pp., 23 cn '. 



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



Insects. 



Britton, W. E. Check-list of the insects of Con- 

 necticut. Hartford, 1920. 



397 pp., 23 cm . 



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



