Elements of conchology Prepared Elements of conchology / Prepared for the use of schools and colleges elementsofconcho00rusc Year: 1844 52 FAMILY OF BUCCINOIDES. LESSON IV. Family of Buccinoides.—Buccinum—Bucdnum properly so called — Harpa —Purpvra —Cassis—Cerithium—Murex— Stromhus—Volvta—Ovula—Cyprcea—Convs. Family of Pectiivibranchiata Capuloida. — Pileopsis — Hypponyx— Crepidula — Calyptrcea — Siphonaria — Siga- retiis. Order of Gasteropoda Tubulibranchiata. Order of Gasteropoda Scutibranchiata.—Haliotis—Fis- surella—Emarginula. Order of Gasteropoda Cyclobranchiata. — Patella—- Chiton. Or
Elements of conchology Prepared Elements of conchology / Prepared for the use of schools and colleges elementsofconcho00rusc Year: 1844 52 FAMILY OF BUCCINOIDES. LESSON IV. Family of Buccinoides.—Buccinum—Bucdnum properly so called — Harpa —Purpvra —Cassis—Cerithium—Murex— Stromhus—Volvta—Ovula—Cyprcea—Convs. Family of Pectiivibranchiata Capuloida. — Pileopsis — Hypponyx— Crepidula — Calyptrcea — Siphonaria — Siga- retiis. Order of Gasteropoda Tubulibranchiata. Order of Gasteropoda Scutibranchiata.—Haliotis—Fis- surella—Emarginula. Order of Gasteropoda Cyclobranchiata. — Patella—- Chiton. Order of Gasteropoda Inferobranchiata, Order of Gasteropoda Tectibranchiata.—Pleurohran- chus—Aplysia—Dolahella—Bullea—Bulla. Order of Gasteropoda Nudibranchiata. — Eolidia — Glavciis. Order of Gasteropoda Heteropoda.—Carinaria. Class of Mollusca Vt^vlofoda, —Clio horealis. 1. In the Family of Buccinoides, the shell is spiral, and in its aperture, near the extremity of the columella, there is a canai or notch, serving for the passage of the syphon or respiratory tube {fig. 56), which is formed by a fold of the mantle, ana destined to afford the animal the power of breathing, without going out of its shell. This family is divided into three tribes, namely : Buccinum, Murex, and Angiostoma. 2. The Tribe of Buccinum comprises all the Buccinoides in which the shell is with- out a plica (fold) in its columella, but is fur- nished with a notch or short canal inflected towards the left, and its aperture is very large. The foot of these mol- lusks is generally of moderate length, and The mantle is unprovided with fringe, and is' prolonged anteriorly into a long canal, which Fig. rounded in front {figs. 33 and 34.) 1. What are the characters of the shell in the family of Buccinoides ? Into how many tribes is this family divided ? 2. How is the tribe of Buc'cinum characterized ? (Buccinum, Latin, a trumpet.)
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