Xll CONTENTS. 



tacea. Wood on ditto. " Shore " crab," " Porcelain " crab, 

 "Pea" crabs, "Nut" crabs, "Angled" crab, "Masked" 

 crab, " Northern Stone " crab, " Spiny " crab, '* Velvet 

 Swimming" crab, &c. Hermit crabs. The Pycnogonidss. 

 Pallene, Nymphon, &c. Squat lobsters. Spiny lobsters, 

 Gammarus. Prawns and Shrimps. Parasites of ditto. 

 Amphipods, &c. Conclusion Pages 228 to 260 



