Systeniatisclicr Tlieil. 921 



Fossile F o r m e n. 



Lithadnthrips Scuddcr. Wiedergabe der Originalbesclir. Ilinds p. 210 211. 



vetusta Scudder p. 211 (Fossil Canyon, White River, Utali). 



Melanothriqys extincta Scudder. Wiedergabe der Originalbcsclireibung. Hinds 

 p. 210 (Chagrin Valley, White River, Colorado). 



Palaeothrips Scudder. Wiedergabe der Originalbeschr. Ilinds p. 21 1—212. 



fossilis Scudder p. 212 (Fossil Canyon, White River, Utah). 



