0D ZF 
Onl. 2 ¢49 
$1.00 per Year/ 10cts. a copy. 
THe 
NAUTILUS 
A MONTHLY 
DEVOTED TO THE INTERESTS 
OF CONCHOL@EGISTS: 
ESTABLISHED BY W. D. AVERELL, IN 1886, AS 
“THE CONCHOLOGISTS’ EXCHANGE.” 
Wol Trt. SEPTEMBER, 1889. No. 5. 
CONTENPS: 
PAGE. 
Notes ON PuHysa TRITICEA OF LEA; its Relations and Comments on the 
variation, Etc., of Physz. Robert E. C. Stearns. ‘ : : > 49 
HELIX NEMORALIS IN VIRGINIA. H. A. Pilsbry. . : : : ; 51 
SCALARIA ANGULATA IN NEW JERSEY. John Ford. . : ¢ : . OZ 
NOTEs ON FLORIDIAN SHELLS. F.C. Baker. . 3 : : ; ; 53 
SUMMER STUDIES IN CONCHOLOGY. Prof. Josiah Keep. . : 5 . o4 
THE SHELL-BEARING MOLLUSCA OF RHODE ISLAND. Horace F. Carpenter. 56 
GENERAL NOTES. . 3 3 : F . ; , : : : 59 
Published by 
H. A. PILSBRY, Editor, Academy of Nat. Sciences, Philadelphia. 
W. D. AVERELL, Manager, Mt. Airy, Philad’a. 
. Entered at Philadelphia Post-Office as second-class matter. 
