MOULTING OP Till: LOBSTER. 



matter. Crabs also have the power of 6nding their way 

 back to their original habitat when carried . . it even for 

 several miles. 



The lobster spawns from March till November; the 

 young nre hatched with much of the form of the adult, no! 

 passing through a metamorphos -. - in most shrimps and 

 crabs. They swim near the surface until about one inch 

 long, afterwards remaining at <>r near the bottom. 



The lobster probably moults bul once annually, duri 

 the warmer part of the year, after having nearly attained 

 its maturity, and when aboul to moult, or cast its -kin. the 

 carapace splits from its hind edge a< far as the base of the 

 rostrum or beak, where it i- too solid t<> separate. The 

 lobster then draws its body oul of the rent in the anterior 

 of the carapace. The claw— at this time soft, fleshy, 

 and very watery — is drawn out through the basal joint. 

 which is partly absorbed to allow the hVsli to pass through 

 the joint. In moulting, the stomach, with the solid teeth. 

 is cast off with the old integument. 



Orders oi Crustacea. 



Order 1. Feet leaf -like, bodj usu- 

 ally with a bivalve shell Branehiopoda : Brine Shrimp, 



Order -. Bra all, active, \\ ith free 

 limbs; Borae parasitic Entomostram : < '\ clops, Fish-lin . 



Order 8 Lai e, fixed, body pro- 

 tected by a shell of several 

 pieces ( Hrripedia : Buruai 



Ord< r I. Body fiat or compressed; 



no carapace; eyes sessile Telradecapoda: Pill bug.Beacb tl 



Order 5. Thoracic fe< t leaf-lik( ; 



thorax covered by a carapace. PhyUocarida: Nebalia. 

 OmUt G Body partly covered 



with a large carapai e ; feel 



with gills; eyes stalked Thoracostraca : Shrimps, Crabs, 



'L\-vv,uYv\v,v..—}fih,,K(l>r<ir<is, Bistoire Naturelle des Crust) 

 8 vols. ls:U-40.— Jhiu.i, Crustacea of the I . B. Exploring Ex] 

 Hon. 3 vols. 1852 Qerataecker, Arthropoden (in Bri 

 and Ordnungen des Thierreichs, \^'< 91. '.' vols /'/ . The 

 Crayfish, 1880. — Packard, Monograph of North American Phyl- 

 lopod Crustacea, 1888. A.lso the writings of Say, Dohrn, B 

 Claus, Brooks, Hagen, Faxon, Smith, Kingsley, et 



