THE LEECHES OF MINNESOTA 147 



grandis, habits of 120 



lateralis 112, 113, (III), 115, 117, 118 



habits of 114. 



marmoratis no, (IV), 113-119, 124 



habits of 112 



plumbeus 115, (IV), 118, 119 



habits of 117 



Helobdella stagnalis '. . . yy 



Hemiclepsis 43, 9 o, 96, 98 



carinata 88 



occidentalis 96, (II) 



habits of 08 



tessellata 08 



Herpobdellidse 120 



Hirudinidse 105, 120 



Hirudo 



bioculata yy 



complanata 82 



decora 106 



lateralis 1 13, 1 15 



lineata 80, 81 



marmorata no 



medicinalis 7, 38, 109 



parasitica 84 



stag-nalis yy 



Horse leech 112 



Ichthyobdella punctata 103 



Ichthyobdellidae 98, 99, 101 



Intestin 18 



Jaws 17 



Key to Minnesota leeches 69 



Leeches, general introduction 3 



American medicinal 6, 106 



Distribution of 4, 65 



Economic importance of 5 



External characters of 8 



Habits of 3 



Internal anatomy of iy 



Key to Minnesota species of 69 



