12 THE NAUTILUS. 



and other species. Tlie American student of conchology has a broad 

 field for work in bis own country, and his researches will not be less 

 valuable, if they result in a consolidation rather than an increase of 

 species. — E. W. Ropee. 



Offered. — North American Land and Fresh-water shells for 

 shells from other localities. — Tiios. C. CurRY, Connersville, Indi- 

 ana, P. 0. Box 866. 



Offered. — Land and Fresh-water shells of Indiana for the same 

 or marine species from any ])art of the world. Unionidce preferred. 

 Printed list of Hendricks County Shells sent free. ^lounted lingual 

 ribbons for microscopists. — Chas. A. Hargrave, President of Cen- 

 tral Normal College, Danville, Indiana. 



LiMAX ARBORUM form SUBMACULATUS f. uov. Resembles var. 

 maculatxis Roeb., except that the spots are gray and partly coalesced 

 on the body ; and some black and some gray on the mantle. Found 

 in County Waterford, Ireland, by Rev. A. H. Delap. — T. D. A. 

 Cockerell. 



Identification of Shells for Subscribers. — Specimens of 

 North and South American (including Mexican and West Indian) 

 shells will be named /or subscribers on the following conditions : 



1st. The number of species in one sending to be limited to 12. 



2nd. The sender to pay all expenses of transportation, and the 

 specimens to become the ])roperty of the Phihidelphia Academy of 

 Sciences. 



3rd. Each species must be numbered, so that the identifications 

 may be announced by number in this department of the Nautilus. 



Address packages to H. A. Pilsbry, Academy of Natural Sciences, 

 Philadelphia, or to C. W. Johnson, Wagner Institute, Philadelphia. 



Helix introferens Bland has been collected by Mr. AVilliam 

 Fox at Atco, N. J. (on the Camden and Atlantic R. R.). This 

 species has not heretofore been noticed so far northward. — H. A. P. 



Mr. Chas. W. Johnson, Junior Editor of the Nautilus, will 

 spend the first half of June in Virginia, on a geological trip. 



