EXPLANATION OF PLATE IIL 



Cockroaches. 



1. la. Ectobius lapponicus, L., tf and ? (nat. size). 

 lb. pronotum (x4). 



2. Ectohius panzeri, Steph., pronotum (x4). 



3. Ectohiua perspicillaris, Fuess., pronotum (x4). 



4. 4a. Blatta germanica, L., imago and nymph (about § nat. size). 



5. 5a. Blatta orienUilis, L., 3 and ? (about § nat. size). 



6. 6a. Periplaiieta aiiiericana, L., wings spread and wings closed (about 



I nat. size). 



7. 7a, Periplaueta australasim, Fabr., wings spread and wings closed 



(about f nat. size). 



8. 8rt. 9ib. Pycnoscelux surinamends , L., wings spread, wings closed and 



nymph (about § nat. size). 



