THE MONTHLY BULLETIN. 



Fig. 2. — A mite, Rhyncolophus arenicola 

 Hall. (.After Hall.) 



Fig. 4. — A centipede, Scolopendra heros. 

 (After Folsom. ) 



Fig. ?,. — A diplopod, Spirobolus 

 ■warr/inatns. (After Folsom.) 



