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DAVENPORT ACADEMY OF NATURAL SCIENCES. 



6. — The lateral carinae are distinct. 



7. — The median carina is always 

 cut by one sulcus, and it is never 

 crested. 



8. — The prozone is not shorter than 

 the metazone. 



9. — The posterior angle of the met- 

 azone is never sharp or acute 

 angled, generally very obliquely 

 and roundly angulate or straight. 



10. — The surface is generally 

 smooth, not wrinkled or tuber- 

 culose. 



II. — The lateral lobes are generally 

 plainly narrowed below, the an- 

 terior or posterior margin (one 

 or both) being oblique. 



6. — The lateral carinae are obsolete* 



7. — The median carina is cut by 

 one, two, three, or no sulcus, and 

 it is often crested. 



8. — The prozone is shorter than the 

 metazone. 



9. —The posterior angle of the met- 

 azone is very frequently sharp 

 or acute angled, never straight. 



10. — The surface is generally wrin- 

 kled or tubcrculose. 



II. — The lateral lobes are gener- 

 ally not narrowed below, but 

 both the anterior and posterior 

 margins are sub-perpendicular. 



CHARACTERS OF THE TEGMIN.A. AND WINGS. 



12. — The intercalary vein of the 

 tegmina is generally wanting 



13. — The scapular area of the teg- 

 mina is often expanded, and the 

 venation is scalariform. 



14. — Imperfect tegmina and wings 

 are very common. Abortive and 

 long-winged forms in the same 

 species are not uncommon. 



15. — The tegmina are plain or 

 striped. If maculate, the spots 

 are not arranged in bands. 



16. — The wings are generally trans- 

 parent, never bright colored, nor 

 with a black band. 



12. — The intercalary vein of the 

 tegmina is commonly present. 



13. — The scapular area of the teg- 

 mina is narrow, and the venation 

 irregularly reticulate. 



14. — Imperfect tegmina and wings 

 are very rare. Abortive and 

 long-winged forms in the same 

 species do not occur. 



15. — The tegmina are plain or mac- 

 ulate, scarcely ever striped. If 

 maculate, there is a tendency 

 for the spots to be arranged in 

 bands. 



16. — The wings are generally bright 

 colored, and most generally 

 have a black band. 



BIBLIOGRAPHY. 



Amoen. Acad. — Ceiitiiria insectorum rariorum, in .\moenitates 



Academicce. (See C. von Linne.) 

 Ann. Del. Mus. Civ. — Annali del Museo Civico Storia Naturah di 



Ge/iova. Geneva, Roy. 8vo. (See Brunner von Wattenwyl.) 

 Ann. Rept. Ent. See. Ont. — Annual Report of the Entomological 



Society of Ontario, Toronto. Roy. 8vo. (See S. H. Scudder, 



F. B. Caumeld.) 



