INDEX 



The figures in boldface refer to the pages en which the descriptions are 

 begun. 



The Roman numerals in parentheses refer to the plates. 



Actinobdella 99, 104 



Actinobdella inequiannulata 99, (III) 



habits of 102 



Aulastomum lacustre no 



Aulostoma 48 



Anatomy of leeches, external 8 



internal 17 



Annulata 9 



Annulation 9 



Annuli 9 



number of 10 



designation of 12 



Anus 18 



Blood vessels r8 



Brain 19 



Branchellion 19 



Ceca, gastric and intestinal 18 



Circulatory system 18 



Clepsine 39 



carinata 88, 90 



elegans 82 



hollensis 43, 47, 94 



modesta 'j'j 



nepheloidea . . . 76 



occidentalis 96, 98 



ornata var. rugosa 86 



papillifera var. carinata 88 



papillifera var. lineata 80 



plana 48, 50 



Crop 18 



Descriptions of Minnesota leeches 75 _I2 8 



Development of leeches 21 



Digestiv tract 17 



Dina , . . 125 



fervida 127, (VI) 



