i6 



Unk-ersity of Michigan 



pusillus 112, 31, 32 



pustulatus 112, 17 



pustulosus 112, 15 



pyramidiatus 



112, 21, 24, 25, 26, 69 



quadrulus 112, 16 



rafinesquei 112, 31 



rariplicata 112, 12, 13 



ravistellus 106, 7, 8 



recta 112, 28, 59, 60 



rectus 112, 59 



reflexus 112, 42 



retusa 112, 19, 44, 45 



rudibundus 112, 68, 70 



rimosus 112, 56, 57, 58 



rubiginosus 112, 5 



rubra 112, 21, 24, 26 



rugosus 112, 14, 16 



sageri 112. 59, 60 



sallei 106, 9 



sapotalensis 112, 47 



scalenia 112, 25 



scalenius 112, 20, 21,26 



schoolcraftensi!5 112, 16 



securis ' 112, 51 



siliquoidea. ..112, 48, 62, 63 

 siliquoideus 



112, 49, 61, 62, 63 



sintcxia 112, 21, 24, 26 



sloatianus 112, 9 



solencides interrupta. . . . 



112, 66 



solidus 112, 21, 23, 24 



sphenorhynclius 106, 15 



stegarius 112, 43 



striata 112, 45, 46 



striatus 112, 27 



subrotundus.112, 4, 5, 45, 46 



subviridus - 112, 34, 35 



sulcatus 112, 68, 69 



tabascoensis 106, 8 



tseniata 112, 67 



taeniatus 112, 67 



tappaniana 1-12, 34 



tappanianus 112, 35 



tehuantepecensis .... 106. 15 



teres 112, 60. 61 



testudineus...106, 10, 12, 28 



texasensis 112, 54 



torsus 112, 45 



torulosus 112, 70 



trabalis 112, 58 



trapezoides. . . .112, 9, 10, 11 

 triangularis 



112, 21, 24, 26, 65 



trigonus 112, 6, 21 



triqueter 112, 65 



truncata 112, 50 



truncatus 112, 50 



tuberculatus 112, 18 



turgidulus 112, 69 



tuscumbiensis 112, 6 



undatus 112, 6, 21 



undulatus 112, 7, 8, 12 



varicosa 112, 39, 40 



varicosus 112, 19 



velum 112, 52 



ventricosus 112, 63, 64 



verrucosus 112, 18 



violaceus 112, 30 



viridis '.112, 34, 35, 36 



fuscata 112, 31, 35 



vittatis 112, 48, 49 



zigzag 112, 50 



Urocyon cinereoargentatus. . 



109, 27 



Ursus americanus american- 



us 109, 26 



Utriculari?. vulgaris ameri- 



cana HI. 8, 9 



Vaccinium oxycoccus. . . .111, 28 

 pennsylvanicum Ill, 25 



Valisneria 111< 12 



spiralis Ill, 11, 12, 23 



Vallonia costata 98. 10 



gracilicosta 9S. 10 



parvula 9S, 10 



perspectiva 98, 10 



pulchella 9S, 10; 102, 4 



Valvata HI* H 



sincera lHo 7, 20, 30 



app. nylanderi. .111, 15, 30 



