Thompson.— Metamorphoses of Hermit Crab. 
I 
m 
PLATE 4. 
All the figures are reduced about two thirds in reproduction. 
Fig. 1. First zoea, ventral. X 52. mxp s , third maxilliped. 
Fig. 2. Second zoea, lateral. X 40. mnd, mandible; ul, upper lip. 
Fig. 3. Third zoea, lateral. X 34. ych, yellow, rcli, red cliromatophores. 
Fig. 4. Fourth zoea, dorsal, swimming position. X 25. lit, heart; ch int , 
chitinous gut. 
Fig. 5. Glaucotlioe or fifth stage, dorsal. X 25. 
Fig. 0. Sixth stage, dorsal. X 25. st, stomach ; ic, caecum ; int, intestine; 
ru, rudimentary pleopod on segment two ; eg, right liver. 
