LOBSTER (HOMARUS VULGARIS) CONT&quot; 



TLATE XIII. 



Fig.!, longitudinal Horizontal Section Female; 



Fig. 2. Longitudinal Vertical Sectjpn [Male 



Fig.3. FRESH-WATER CRAYFISH (ASTA.CUS FLUVIATILIS 



(Female | 



V. * A K JoLaeion K.Unburgfi t Lundui 



