MANUAL OF NATURAL HISTORY. 283 



On the coast of the Scandinavian countries he 

 will encounter the Norway-Lobster (Nephrops), the 

 Spider-Crabs (Oxyrhynchi), the Common- Lobsters 

 (Romari), and many members of the Crabs-proper 

 {Cancer idee). Some of these remain habitually on 

 the sands and among the rocks, at great depths, 

 and must be dredged; some spend their days alto- 

 gether on shore, living in burrows and holes, or 

 under stones and sea-weed. 



On the shores of France and England, the Carci- 

 nas mamas, or Common-Crab, the large Edible- 

 Crab (Cancer Pagurus), the Hermit-Crabs (Pagu- 

 ri), the Cray-Fish (Astaci), the Prawns (Palcemori), 

 and the Spiny-Crabs (Maia, Pisa, &c), will all 

 be met with ; but the Crustaceous Class, besides 

 the Crabs, Prawns, and Lobsters, comprises many 

 curious forms, which, if not equally as savoury, are 

 yet well worthy of the traveller's attention ; their 

 habits especially require much investigation, their 

 modes of changing their skin, reproducing lost 

 limbs, and luminous properties, also demand his 

 consideration. 



In the Mediterranean, the collector of Crusta- 

 ceans will first meet with the Swimming-Crab 

 (Lupa), and in bottoms covered with weeds and 

 coral, Mithrax and Acanthonyx; and hiding and 

 shuffling under stones, Trapezice, and the Porcella- 

 nous-Crabs : here also he will see, for the first time, 

 Calappa, or the Crested-Crab, feigning death on the 

 moist loose sands ; and also the Sea-Locusts {Scyl- 

 lo/ri), and the Sea-Mantises (Squillce), in shallow, 



