THE NAUTILUS. 103 



Custer Co. I doubt whether minutissima is separable even as a 

 v^ariety from pyf/mwa. 



P. (Punctum) conspedu (Bland.) San Juan Co. (Ingersoll). 



P. {ThysanophorcL) ingersolli (Bland). San Juan Co. (Inger- 

 soll) ; near Brush Creek, 10,000 ft, Custer Co. ; Clearwater Creek, 

 Grand Mesa, jNIesa Co. A sjiecies of high altitudes. 



P. (Hellcodiscus) lineata (Say). Animas Valley (Ingersoll). 



Helix {Stenotrema) monodon Rack. Colorado Springs (Yarrow). 

 Beyond this record, nothing is known of any species of the group 

 in Colorado. Probably the Colorado Springs H. monodon was 

 introduced by human agency. 



H. (Vallonla) pulchella var. costata (Miill.) San Juan Co. 

 (Ingersoll) ; South Park (Yarrow) ; Micawber Mine, Custer Co. ; 

 Rock Creek, Routt Co. ; Kremmling, Grand Co. ; Pueblo Co. ; near 

 Salida, Chaffee Co.; Black Lake Creek, Sunnnit Co.; Buzzard 

 Creek, Mesa Co. ; near Cattle Creek, Garfield Co. Perhaps costata 

 deserves to rank as a species distinct from pulcheUn. 



H. pidchella costata form cijclophorella (Ancey). The ribs in 

 this form are close and delicate, but it seems to me referable to 

 costata. JNIr. Ancey has identified a specimen from West Mountain 

 Valley as cyc/ophorella, and indeed, if the name is to be adopted, it 

 will probably include at least a majority if not all of the Colorado 

 specimens of Vallonia. Vide 11th Rept. Colo. Biol. Assn. (1889). 



H. pulchella pulchella Miill. Binney records pulchella from Este's 

 Park, but it is probable that the form was costata. 



West Cliff, Custer Co., Colorado, Dec. 10, 1889. 



AN ANNOTATED LIST OF THE SHELLS OF ST. AUGUSTINE, FLA. 



BY C. \V. JOHNSON. 



The following is a list of the shells which came under my observa- 

 tion while living at St. Augustine from 1881->'8. 



As very little dredging was done it is probably far from complete, 

 but as some of the notes may be of interest to the Conchologist, I 

 herewith submit it to the readers of the Nautilus. 



