ANALYTICAL INDEX. 281 



CHAPTER III. 



April the chief breeding season, . . . PAUB 206 



Plate* LI II., LI V., explained, . . .107 



8 2. GALATREA ironowu, Tht Thorny Baitard Lobtter, . ib. 



One of the nxxt beautiful, curious, and symmetrical of the tribe, ib. 



Form, size, organ*, &c., described, . . . ...- 



Motion tingolar and vehement, . . . . ib. 



Propagation, ...... . 



Exuviation, . . . . . . -.MO 



This species prciaroed to be migratory, ... ib. 



Plato LV. explained, ..... ib. 



B. DECAPODS*, TEN-UXBED, IX>MO-T AILED, CBOBTACEAX*, MACBOOBI, 



AST ACCS, THE LOBSTER, . . . .211 



The form of this genu* differ* considerably from that of the Crab, ib. 



1. AfTACUS NoKVEoicot, Linrurut, NORWEGIAN LOBSTER, . ib. 



Beautiful, lively, and active creature, perhaps migratory, 212 



Fabriciui, Fauna Groenlandica, . . . . ib. 



The animal described, . . ... . ib. 



The ovarium, ...... 2U 



PlateLVL, LVI I., LXX., explained, ib, 



Called the Crayfish by fishermen, . . . . ib. 



Fresh water Cray fish not natural to Scotland, . . 215 



From the ova Rathke traced the progress of the embryo, . ib. 



Said to dwell chiefly in muddy stream*, . . ib. 



2. ASTACUS MARINU8, The Common Lobtter, . . . ib. 



Though familiar its history little known, . . ib. 



History and description of qmrimeas, ... . ib. 



Ova, ....... 216 



Mr Gillespie Graham, gigantic claw, . . . ib. 



Lobster fishing in the Western Isles for the London market, ib. 



LVIIL, LIX., explained, . . . .217 



3. CKAXOOX, The Shrimp, ..... ib. 



Learned author* say little of the Shrimp, . . . ib. 



Size, form, Ac., . ib. 



Lively creature, and very tame, . 218 



Carnivorous, . . . ib. 



The shell often cast, but without any preliminary indication, ib. 



