146 THE LEECHES OF MINNESOTA 



fervida, habits of 128 



microstoma 128 



parva 125, (V, VI), 127 



habits of 127 



Economic importance of leeches 5 



Effects of bloodsucking by leeches 5 



Egg laying 2I 



Erpobdella i 2 i f \2\ 



punctata 115, 121, (IV), 123, 124, 127 



habits of j 2 2 



Esofagus 17 



Excretory system of leeches 19 



External characters of leeches 8 



Eyes of leeches 14 



Farynx 17 



Fertilization 20 



Glands, esofageal 17 



salivary 17 



sucker 5° 



Glossiphonia 13, 43, 75> 96 



complanata yy, 81, 82, (I) 



habits of 83 



elongata 76 



fnsca 80, (I), 82 



habits of 81 



lineata 80 



nepheloidea 76, (I) 



habits of jy 



parasitica 84 



stagnalis 65, 77, (I), 80, 81, 122 



habits of 79 



triserialis 81 



Glossiphonidse 9, 43, 75, 82, 97-102, 120 



* mathobdellidae 17 



I [aerriadipsa ceyl< of •. . 6 



I taementeria 43 



efanovi 50 



! fsemopis 21, 79, 109, no 



[randis 26, (A), 1 15. 1 [6, 117, I IV, V) 



