212 BERMUDA. 



(or Scallop) — Genus Area — Arcacese (or Ark Shells) — Area 

 Nose — A. barbata — Genus Lima — Lima glacialis — Mytilaceae — 

 Genus Mytilus — Mytilus exustus — M. elongatus — Carnacea — 

 Genus Chama — Chama arcinella — Cardiacea — Genus Cardium 

 (the Cockles) — Cardium laevigatum — C. unedo — C. cardissa — 

 Genus Tellina — T. radiata — T. depressa — T. tenuis — Genus 

 Venus — Venus gemma — V. granulata — ^V. plicata — Genus 

 Cytherea — C. tigeriua — C. castrensis — Genus cyclas — C. cornea 

 — ^Myse — Genus Mya — M. arenaria — M.truncata — Genus Ana- 

 tina — Mya globulosa — Genus Solen — Solen endis — Genus 

 Teredo — T. navalis — Acephala nuda — A. Segregata — Genus 

 Ascidise — ^A. rustica — A. lobifera — A. Aggregata — Genus Pyro- 

 soma — P. Atlanticum — ^rachiopodes — Cirrhopodes — Genus 

 Anatifa — ^Lepas anatifera — Genus balanus (or Acorn Shells) — 

 Balanus tintinnabulum. 



Crustacea (or Crabs.) — The Crustacea are generally 

 carnivorous, feeding on dead or decomposed animal 

 matters. Some are constantly fixed on cetaceous 

 animals, aquatic reptiles, and fishes. The greater 

 portion live in the sea, at different depths, and in 

 localities proper to their various habits; others are 

 found in fresh water, or on land. Those which have 

 fin-like feet swim on their side or back, and the 

 greater part of the others walk sideways or back- 

 wards ; some run with extreme rapidity, and others 

 are constructed for climbing trees. Many species 

 affotd an agreeable food, and are taken for this pur- 

 pose in numbers, or for bait. 



The members of the Crustacea, when injured or 

 disabled, are speedUy reproduced, and they change 

 their crustaceous covering annually. 



