7tii,ct 



THE 



NAUTILUS 



A MONTHLY JOURNAL 



DEVOTED TO THE INTERE.^T^ OF 



C0NCH0L0GI8TB 



VOL. XXIV. 

 MAY, 1910, to APRIL, 1911. 



EPITORP AND PTBLISHERS : 



HA. Pti.3BRy, Curator of the Department of MoUuMa, Academy of Natural Sciencea, 



Philadelphia. 



C. W. Johnson, Curator of the Boiton Society of Nattiral Hiatory, 



Boston. 



