Elements of conchology Prepared Elements of conchology / Prepared for the use of schools and colleges elementsofconcho00rusc Year: 1844 Fig. 65. STROMBUS. 13. The Strombus has a shell in which the canal is straight or curved to the right, and its external edge expands with age, and this canal presents a sinus (hollow) behind, in which the head lodges, when the animal extends itself. In the Strombus properly so CALLED, the sort of wing formed by this prolon- gation of the margin of the shell is entire (Jio-. 65), while, in the Pterocera, it is divided, in the adult, into long and slender digi
Elements of conchology Prepared Elements of conchology / Prepared for the use of schools and colleges elementsofconcho00rusc Year: 1844 Fig. 65. STROMBUS. 13. The Strombus has a shell in which the canal is straight or curved to the right, and its external edge expands with age, and this canal presents a sinus (hollow) behind, in which the head lodges, when the animal extends itself. In the Strombus properly so CALLED, the sort of wing formed by this prolon- gation of the margin of the shell is entire (Jio-. 65), while, in the Pterocera, it is divided, in the adult, into long and slender digitations. 10. How is the tribe of Mu'rex characterised ? (Murex, Latin, a shellfish.) 11. How are Mu'rices properly so called distinguished ? 12. What are the characters of Fusus ? (Fusus, Latin, a spindle.) 13. What are the distinguishing characters of Strom'bus? (Strombus, Latin, name of a shellfish.)
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