U. S. B. F.— Doc. 890. 



Plate IX. 



CONCHS TOP, CHANNELLED CONCH OR WHELK, BUSYCON CAN ALICULATUM ; 

 CENTER, STRING OF CAPSULES CONTAINING EGGS OF KNOBBED CONCH; 

 BOTTOM, KNOBBED CONCH OR WHELK. BUSYCON CARICA. 



