Michigan Geological ami 

 ]5i()l()i,'ical Siii-vey. 



J'ul)litatioii 20; Uiology 1. 

 Plate X. 



-/— "^ 



B 



E 



J^ 



1 IcriM'; A. 1.A15U Al OF A NVMl'H ()!■ M.\< JxOMlA J LLI .\<)IE\><rs AVAL. -II 



MCI \<K H. IIGURK OF HAGEXIUS lilil!: VISTYLrs SKLVS. 



FIGUHK C, FIGURE OF THE LABIUM OF AdlilOS AliQlAIilLE (SAY). 



FIGURE D, SIDE VIEW OF THE AHOOM K\ OF /lAO'EMUS liKEVISrVLrs SELVS. 



FIGURES E AND F, F^ORE AND HIND WINGS OF .lA'.lA' JiWIiS (DRURV). 



