FREE AMINO ACIDS IN INVERTEBRATES W738 

‘i - pee 
* 

Fig. 6. Marine crustacea. (a) Stone crab (Neopanope taxana); (b) Pistol shrimp (Crangon hetero- 
chelis); (c) Hermit crab (Pagurus pollicaris); (d) Hermit crab (Clibinarius vittatus). G = 
Glycine, T = Taurine, A = Alanine. 

ae (d) ewe 
e., e-. 
—— 
Fig. 7. Land Gastropods. (a) Land snail (Otala lactea, fed), (b) Otala lactea (starved for 6 months), 
(c) Herbivorous land snail (Bulimulus alteynatus), (d) Carnivorous land _ snail (Euglandina 
singlyana). G = Glycine, T = Taurine, A Alanine. 
