$1.00 per Year. ($1.12 to Foreign Countries.) lOcts. a copy. 



THE 



NAUTILUS 



A MONTHLY 



DEVOTED TO THE INTERESTS 

 OF CONCHOLOGISTS. 



EDITOR: 

 H. A. PILSBRY, Conservator Conchological Section, Academy of Natural Sciences, Philadelphia. 



ASSOCIATE EDITOR : 



C. W. JOHNSON, Curator of the Wagner Free Institute of Science. 



Vol. XII. AUGUST, 1898. No. 4 



CONTENTS : 



PAGE. 



THE MOLLUSKS OF THE GREAT AFRICAN LAKES. 



ON A NEW SPECIES OF MYLLITA. By W. H. Dall. . . .40 



NOTE ON ISCHNOCHITON ONISCUS Krauss AND I. ELIZABETHENSIS Pilsbry. 



By E. R. Sykes, B. A., F. Z. S. . . . 41 



NOTES ON NEW AND LITTLE-KNOWN AMNICOLJD.*;. By Henry A. Pilsbry. 4i' 

 A NEW SPECIES OF TEREBRA FROM TEXAS. By W. H. Dall. . . .44 



GENERAL NOTES. . . . ... 45 



RECENT PUBLICATIONS. 47 



Published by 



H. A. PILSBRY, Editor, Academy of Nat. Sciences, Philadelphia. 



C. \V. JOHNSON, Manager, Wagner Free Institute of Science, Philad'a. 



Entered at Philadelphia Post-Office as second-class matter. 



