XIX 



THE CLASS OF CRUSTACEA OR CRUSTACEANS. 



ORDERS. Families. Genera. 



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J[aiiD/E or 



Ska-Spidku 



Family.* 



Cancridjj or 



EuiliLE CHAB 



Family. 



POKTUXID.E or 



Ediblk Okab 

 Family. 



Gecaecinid.e or 



Land Crab 



Family. 



GELASMID.-E or 



Fiddlek Ckab 

 Family. 



Maia^ c^c. 



or Sea-Spiders, &c. 



Cancer J ffc. 



or Edible Crab of Europe, &c. 



Lupa, ^c. 



or Edible Crab of U. S., &c. 



Gecareinus, ^c. or Land Crabs. 



Gelasmus, ^c. or Fiddler Crabs. 



Pagurid.e or 



Hermit Cuab 



Family. 



Palinueid.e or 



Spiny Lobster 



Family. 



AsTiciDiB or 

 Common Lob- 

 ster Family. 



CRANGONIDyE or 



Shrimp Family. 



PalemoniDjE or 

 Prawn Family. 



SQUILLID.E or 



Sea Mantis 

 Family. 



MysidjE or 



Opossu.mShrimp 



Family. 



Paffurus, ifc. or Hermit Crabs. 



Palinurus, ^c. or Spiny Lobsters. 



Homarus 

 AstacuSj cfc. 



or Common Lobsters. 

 " Crav-Fishes. 



Crangon, <fc. or Shrimps, 



Palemon, tfc. 



or Prawns. 



Squilla, cfc. 



or Sea Mantes. 



Mysis, cfc. 



or Opossum Shrimps. 



* Only the more common Families and Genera of Crustaceans are here siven. Th» 

 same ia true in regard to Worms, on page zzi- 



