198 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



The life history is not known. 

 Host: White oak. 

 Litchfield, July (L. B. W.). 

 C. discoidalis (Emmons). 



1854. Gar gar a discoidalis Emmons. N. Y. Agr. Rept., v. 157. PI. 13, 



fig. 4. 

 1864. Smilia carinata Stal. Hem. Mex., 71. 

 1867. Cyrtosia carinata Stal. Ofv. Kongl. Vet-Akad. Forh., 24. 554. 



1893. Cyrtolobus discoidalis Goding. Can. Ent., xxv, 172. 



1894. Atymna discoidalis Goding. Cat. Memb. N. A., 436. 

 1896. Atymna carinata Fowler. Biol. Centr. Amer., 141. 



Rare but easily distinguished by the prominent brown line on 

 each side of the metopidium beginning just back of the humeral 

 angles and continuing downward over the face. The general 

 color is yellow marked with light brown. The posterior process 

 is very short, not reaching the tips of the tegmina which are yellow 

 hyaline with the tips tinged with light brown. 



The life history is not known. 



Host: Red oak. 



Litchfield, July (L. B. W.). 

 C. maculifrontis (Emmons). 



1854. Gargara maculifrontis Emmons. N. Y. Agr. Rept., v, 156. 



1894. Atymna maculifrontis Goding. Cat. Memb. N. A., 436. 124. 



1908. Cyrtolobus maculifrontis Van Duzee. Stud. N. A. Memb., 89. 13. 



Should be common but has been reported only from Litchfield. 

 Easily distinguished by the very prominent black spots on the 

 metopidium which are often confluent to such an extent that the 

 entire front of the prothorax is solid black. The general color is 

 green or yellowish and the dorsum is regularly rounded. 



The life history is not known. 



Hosts: Swamp white oak (Q. bicolor), white oak. 



Litchfield, June and July (L. B. W.). 



Atymna Stal. 



This genus and the next are usually considered as subgenera 

 of the genus Cyrtolobus. The characters are entirely artificial and 

 are dependent on the shape and structure of the pronotum which 

 is somewhat variable and results in gradations of species from one 

 group to another, making it extremely difficult to delimit the groups. 

 These characters are, however, fully as well established as those 

 which are used to set ofT other genera of the family, e.g., Heliria, 

 Glossonotus, Telonaca, etc., and for purely taxonomic purposes 

 it seems desirable to consider the groups as distinct genera in order 

 to facilitate cataloging. 



In Atymna those forms are included in which the pronotum is 

 highest at its anterior extremity. 



Three species are here recognized as follows : 



