Pisidium 



Ixdi.x to the Nautilus 



Plagiodon 



Pisidium rowelli 17: 80, 31: 54 



sargenti 15: (.7. 29: 95, 31: 85, 



33: 17 

 scholtzii 17: 22, 17: 48 

 scutellatum 9: 10: 66, 14: 103, 

 19: 2. 23: 43. 29: 47, 30: 30, 

 31: 12, 31: 85 

 seminulum 14: 103 

 septentrionale 12: 78, 13: 12, 19: 84 

 simplex 19: 84, 22: 106, 28: 19, 31: 

 85 



singleyi 11: 112, 19: 31, 20: 44, 21: 



80, 25: 117, 34: 49 

 smithii 19: 83 

 sphaericum 26: 8, 28: 20 

 splendidulum 11: 113, 11: 124-5, 

 12: 118, 13:31, 13: 106, 13: 112, 

 14: 100, 14: 103-4, 17: 42, 20: 

 100, 22: 106, 22: 114, 26: 138-9, 

 31:85 

 steenbuckii 15: 10 

 sterkianum 12: 46 

 streatori 14: 100, 21: 47 

 strengii 15: 126, 17: 43 

 subrotundum 20: 19, 22: 106, 24: 



69, 26: 7, 26: 65, 29: 94 

 subtruncatum 17: 81 

 succineum 20: 99, 22: 114 

 superius 20: 98 

 supinum 12: 118 

 tenuilineatum 33: 33 

 tenuissimum 14: 99, 20: 19, 22: 106 

 torquatum 9: 142 

 trapezoideum 9: 124, 20: 89, 20: 99 

 triangulare 22: 106 

 ultramontanum 9: 98, 9: 102, 13: 



67, 17: 80 

 variabile 2: 49, 6: 67, 7: 129, 8: 

 126. 8: 140, 9: 6, 9: 76, 9: 98-9, 

 9: 102, 9: 128, 10: 16, 11: 10, 12: 

 117-18, 13: 4, 13: 106, 14: 5, 

 14 : 103-4, 15 : 132,17 : 82, 18: 129, 

 19: 2, 19: 32, 19: 118, 20: 44, 

 20: 98, 22: 32, 22: 105-6. 22: 

 113-14, 23: 11, 25: 1, 26: 6, 26: 

 96, 26: 118, 26: 138, 29: 94-5, 

 31: 85 



ventricosum 3 : 33, 6 : 67, 9 : 6, 10 : 

 21, 11: 114, 13: 55, 13: 106, 14: 

 103-4, 17:22,20:91,22: 114,22: 

 106. 



vesiculare 10 : 21 , 11 : 1 14, 31 : 12, 



31: 86 

 vile 12: 46 



virginicum 4: 85, 4: 115, 6: 66, 

 7: 34, 7: 129, 8: 139, 9: 6, 9: 75, 

 9: 128, 10: 67, 12: 117, 12: 118, 



13: 4. 18:30, 14: 79, 15: 132, 17: 

 82, 18: 57, 19: 30, 20: 43, 25: 1, 

 25: 29, 25: 127, 27: 83, 30: 30, 

 25: 144 



Pisidium volutabundum 24: 144 



walkeri, 9: 75, 9: 128, 10: 67, 12: 

 79, 13: 31, 13: 106, 14: 103, 17: 

 21, 20: 18, 26: 136, 29: 95 

 pisiformis, Strigilla7: 117, 14: 119, 34: 

 41 



Pisinna elongata 12: 54 



glabrata 12: 54 



punctulum 12: 54 



seminulum 12: 54 

 pisum, Stoastoma 8: 32, 24: 85, 24: 90 

 Pitar, dione 20: 2 

 Pitaria albida 16: 139 



alternata 16: 141 



circinata 16: 141 



dione 16: 129 



eucymata 16: 139 



fulminata 16: 139-40, 17: 127, 34: 

 122 



lupanaria 16: 140 



newcombiana 16: 140 



simpsoni 16: 139, 34: 122 



tomeana, 16: 140 

 pitcheri, Gryphaea 12: 108 

 pityonesica, Helix 26: 112 

 pityonesica, Jeanneretia 26: 112 

 Pitys, 6: 68-9 

 placenta, Anomia 34: 129 

 placenta, Placuna 13: 130, 34: 129 

 placentula, Hyalina 16: 23 

 placentula, Vitrea 11: 130, 14: 57, 21: 

 89 



placentula, Zonites 7: 16-17, 7: 33, 16: 

 23 



Placiphorella rufa 32: 25, 33: 28 

 sinuata 7: 102, 



velata 18: 20, 21: 52, 25: 74, 33: 28 

 Placobranchus californicus 25 : 25 



catulus 31: 132 

 Placopecten, 11: 116 

 Placostylus, 8: 35 



alienus 7 : 116 



francoisi 19 : 44 



hebridarum 19 : 44 

 Placuna ephippium 34: 129 



placenta 13: 130, 34: 129 



sinuosa 7 : 116 

 Placunanomia echinata 7: 116 



macroschisma 5: 55, 7: 72, 9: 39- 

 40, 10: 69, 11: 53, 12: 84, 12: 

 112, 13: 29, 



rudis 5: 43, 13: 84 

 Plagiodon, 7: 20, 7: 30 



331 



