THE NATURAL HISTORY SURVEY. 365 



5. A DAY ON THE CHICAGO DRAINAGE CANAL. 



BY FRANK C. BAKER. 



The Nautilus, Vol. XII, No. 6, p. 63, October, 1898. 



The following species are enumerated from the western 

 region: 



Anodonta grandis Say. Planorbis trivolvis Say. 



Anodonta imbecilis Say. Planorbis bicarinatus Say. 

 Alasmodonta complanata Barnes. Planorbis campanulatus Say. 



Alasmodonta deltoidea Lea. Planorbis truncatus Miles. 



Lampsilis hiteolus Lam. Planorbis deflectus Say. 



Sphcerium simile Say. Physa heterostropha Say, 



Sphcerium stamineum Conrad. Aplexa hypnorum Linne. 



Calyculina truncata Linsley. Goniobasis livescens Menke. 



Succinea retusa Lea. Amnicola limosa Say. 



Limncea desidiosa Say. Amnicola lustrica Pilsbry. 



Limncza pahtstris Miill. Amnicola cincinnatiensis Lea. 



Limncea caperata Say. Vivipara contectoides W. G. Binney. 



Limncea humilis Say. Valvata tricarinata Say. 



6. A NEW SPH^RIUM. 



BY FRANK C. BAKER. 



The Nautilus, Vol. XII, No. 6, p. 65, October, 1898. 

 Description of SphcBriiim lilycashense Baker, from Lilycash 

 Creek, western region. 



7. NOTES ON THE MOLLUSKS OF LILYCASH CREEK. 



BY FRANK C. BAKER. 

 The Nautilus, Vol. XIII, No. 3, p. 30, 1899. 

 The following species are listed from the western region: 



Sphcerium staminium Conrad. Pisidiumsp. 



'Sphcerium lilycashense Baker. Pisidium roperi Sterki. 



Sphcerium striatinum Lam. Limncea humilis Say. 



Sphceriiim simile Say. Limncea desidiosa Say. 



Sphcerium occidentals Prime. Planorbis parvus Say. 



Calyculina transversa* Say. Physa heterostropha Say. 



Calyculina truncata* Linsley. Pleurocera elevatum Say. 



Pisidium abditum Haldeman. Amnicola limosa Say. 



Pisidium compressum Prime. Amnicola limosa var parva Lea. 



Pisidium walkeri Sterki. Cincinnatia cincinnatiensis Lea. 



Pisidium cruciatum Sterki. Pomatiopsis cincinnatiensis Anthony. 



Pisidiitm punctatum Sterki. Campelomarufum Haldeman. 



Pisidium fallax Sterki. (Reversed.) 



Pisidium splendidulum Sterki. 



Pisidium variabile Prime. 



*Mr. Handwerk, who sent the specimens for identification, says, in a letter of recent 

 date, that the two Calyculina were from the Desplames River and not from Lilycash 

 Creek. 



