THE NAUTILUS. 47 



INDEX TO CONCHOLOGISTS EXCHANGE. V 



JMya arenaria Linne, II, 47 



Mytilopsis leucopheata (Jonr., attached to Unios, . I, 27 



Natica Fordiana Simpson, n. sp. ; Florida, . . . II, 51 



Nesera pellucida Stimp., . . II, 61 

 Nesobia Ancey, n. subg., type Bulimus Heleiioe Q. et 



G. ; St. Helena, . . II, 39 

 Oligospira Ancey, u. subg., types II. Waltoni Rve. ; H. 



Skinneri Rve. ; Ceylon, . . . . . II, 22 

 Ophiosphila Ancey, n. subg., types Helix Kuhui Pfr. ; 



H. andicola Pfr. ; H. catenifera, etc., . . I, 64 



Pandora trilineata Say, II, 62 



Parmacella valenciennii Webb & Van Ben., var punc- 

 tulata Cockerell ; var. maculata Cockerell ; and 



var. olivacea Cockerell (new varieties),. . . II, 68 



Patula strigosa Gld., var. Bruneri Ancey, . . . II, 64 



Periploma Leana Conrad, II, 77 



Petricola pholadiformis Lam., II, 101 



Pholas truncata Say, . . I, 65, II, 19 



Pholas costata Linn., ....... II, 19 



Physa solida Phil., syn. of P. heterostropha Say, . . I, 20 

 Physa ("Paludinn,") scalaris Jay a Plauorbis (Heli- 



soma), ... . . II, 113 



Physa gyrina Say ; P. heterostropha Say, . . . 11,111 

 Pilsbrya Ancey, n. subg., in place of Poecilostola An- 

 cey, preoccupied, ...... I, 54 



Pisidium compressuni Prime ; P. variabile Prime, . . II, 49 



Pisidium wquilaterale Prime, ..... II, 50 



Planorbis dilatatus Gld., in England I, 63 



Plauorbis lens Lea, ........ I, 63, 76 



Planorbis havanensis Pfr. ; P. tumidus, . . I, 20, II, 51 



Planorbis esacutus Say, I, 76 



Planorbis deflectus Say ; P. dilatatus Gld., ... I, 77 



Planorbis hirsutus Gld., ...... I, 78 



Planorbis parvus Say ; P. Jenksii H. F. Carpenter 



(n.sp.), . " . II, 2 

 Planorbis umbilicatellus Cockerell new name for P. um- 



bilicatus Taylor, non Mu'ller, .... II, 68 



Planorbis trivolvis Say, 11,111 



Planorbis (Helisoma) scalaris Jay (^Physa scalaris Jay), II, 113 

 Pleurocera subulare Lea, . . . . , .11,81,94 



