216 
Wisconsin Academy of Sciences, Arts, and Letters. 
Explanation of the Plates 
PLATE VII 
Fig. 
1. 
Arrhenurus 
Fig. 
2. 
Arrhenurus 
Fig. 
3. 
Arrhenurus 
Fig. 
4. 
Arrhenurus 
Fig. 
5. 
Arrhenurus 
Fig. 
6. 
Arrhenurus 
Fig. 
7. 
Arrhenurus 
tacomaensis, dorsal view. 
tacomaensis, appendix, ventral view. 
tacomaensis, lateral view. 
tacomaensis, fourth joint of fourth leg. 
tacomaensis, right palpus. 
elongatus, dorsal view. 
elongatus, lateral view. 
PLATE VIII 
Fig. 8. 
Fig. 9. 
Fig. 10. 
Fig. 11. 
Fig. 12. 
Fig. 13. 
Fig. 14. 
Fig. 15. 
Arrhenurus 
Arrhenurus 
Arrhenurus 
Arrhenurus 
Arrhenurus 
Arrhenurus 
Arrhenurus 
Arrhenurus 
acerformis fern., ventral view. 
acerformis fern., dorsal view. 
hirsutus fern., dorsal view. 
hirsutus fern., genital area. 
hirsutus fern., left palpus. 
acerformis fern., left palpus. 
elongatus, left palpus. 
elongatus, fourth joint of fourth leg. 
Eockford College, 
Eockford, Illinois. 
