194 



IOWA ACADEMY OP SCIENCES. 



PLATE XIII. 



Figure 1. Leg of Aphropbora quadrinotata, Say, showing double row 

 of spines. 



2. Leg of Lepyronia qaaclrangularis, Say. 



3. Leg of Clastoptera proteus, Fitch, showing single row of 

 spines. 



Figure 4. Side view of C. delicata, Uhl., showing outline of face. 



Oblique dorsal view of same showing inflation of front. 



5. C. proteas, Fitch, same as above. 



6. C. xanthocephala, Germ. 



7. C obtusa, Say. 



8. Venation of hemelytra, C delicata. 



9. Same for C. proteus. 



10. Same for C. xanthocephala, Germ. 



11. Clastoptera obtusa, Fitch. 



and 3; first, second and third apical cells, a and b; first and sec- 

 ond discoid cells. 



Figure 

 Figure 



Figure 

 Figure 

 Figure 

 Figure 

 Figure 

 Figure 

 Figure 

 1,2 



PLATE XIV. 



Figure 1. Abdomen of Lepyronia quarangularis Say, male, ventral view. 



Figure 2. T'emale, of same. 



Figure 3. Male, dorsal view. 



Figure 4. Abdomen of Aphropbora parallela. Say, male, ventral view. 



Figure 5. Female, ventral view. 



Figure 6. Same, dorsal view. 



Figure T. Abdomen of C obtusa, male, posterior view. 



Figure 8. Female, same view. 



Figure 9. Abdomen of C xanthocephala, Germ., male, posterior view. 



Figure 10. Female, same view. 



OBSERVATIONS ON THE CICADID.E OF IOWA. 



HERBERT OSBORN. 



The members of this interesting group of insects, which con- 

 tains the largest of our native Homoptera, have at least four 

 representatives in the state of Iowa and it is the intention to 

 call attention to these in this paper and also to put on record 

 some observations regarding their habits and distribution which 

 may serve as a basis for further investigations concerning 

 them. 



Cicada dorsata Siy. One specimen of this large species 

 n the collection of the Iowa Agricultural College from a student 

 who stated that it was taken in Poweshiek county, is the only 

 example indicating its occurrence in the state. 



