Memoir 38 



Plate XCII 



TYPES OF ANAL GILLS IN GENUS TIPULA, VENTRAL ASPECT 



506, Tipula oropezoides; 507, T. nobilis; 508, T. caloptera; 500, T. dejecta; 510, T. usitata; 

 511, T. ignobilis; 512, T. iroquois (supposition) 



1123 



