THE NAUTILUS. 



Paludina scalaris Jay. 



Patula Cooperi in Colorado and Utah 



Patula caeca Guppy 



Patula incrustata Pfr. 



Patula strigosa, n. var. subcarinata. . 



n. var, bicolor. 



n. var. lactea. . 



n. var. jugalis. 



n. var. intersum 

 Phenacarion n. g. 

 Physa triticea, Notes on 

 Planorbis Liebmanii Dkr. 

 Planorbis cultratus Orb. 

 Poecilozonites circumfirmatus var. corueus 

 Proceedings of Scientific Societies. 

 Prophysaon. ..... 



Publications received. . . 12, 24, 35, 47, 71 

 Pupa Holzingeri, n. sp. ..... 



Pupa calamitosa, n. sp. . 



Pupa Sterkiana, n. sp. 



Pupa Pilsbryana, n. sp. . . . . . 



Pyrgula, on lingual dentition, etc. of 



Recent addition to the United States Snail Fauna. 



Scalaria angulata in New Jersey. 



Scalaria, on the New Jersey coast. 



Shells new to the United States Fauna. 



Shell collecting in Southern Texas. ... 



Shell Bearing Mollusca of Rhode Island. 21, 32, 44, 

 Sphaerium Cubense Prime. .... 



Strobila Hubbardi A. D. B 



Summer Studies in Conchology. ... 



Trochus infundibulum, notes on the soft parts, etc. 



Tylodina, on a new species of 



Unio complanatus in Michigan. 



Valvata (Lyogyrus) Brownii, notes on. 



What is a species ? . . . . 



Word to Young Collectors. 



Zonites Ligerus var. Stonei, n. var. 



Zonites selenitoides, n. sp. 



Zonites (Guppya ?) Gundlacbi Pfr. . 



,83, 



56,69 



8 



8 



25, 62 



63 



133 



133 



134 



134 



135 



127 



49 



60 



63 



95 



20 



59 



107, 144 



37,96 



61 



95 



123 



107 



61 



52 



106 



60 



60 



, 82, 92 



19 



20 



54 



2 



122 



16 



67 



5,88 



115 



46 



95 



63 



