PLATE LXXXIX. 



Crangon vulgaris (p. 483). 



Fig. 1. Structure of the pereionic viscera of the brephalos ; a, oplithalmus ; b, first 

 joint of first antenna ; c, first joint of second antenna ; d, mandible ; 

 e, first siagnopod ; /* second siagnopod ; g, third siagnopod ; h, first 

 gnathopod ; i, second gnathopod ; k, 1, m, n, buds of four successive 

 pereiopoda ; gc, stomach, the outer double line showing its area when 

 ddated, the inner or convoluted double line showing its contour in 

 rhythmical contraction ; cd, heart. 



,, la". Lenses of the oplithalmus, showing the numerical increase during development. 



Sabinea septemcarinata (p. 493). 

 „ 2. Dorsal view ; enlarged twice. 



Parathanas decorticus (p. 530). 

 „ 3. Lateral view ; enlarged twelve times. 

 ,, 3c. Second antenna ; scaphocerite as seen within its exuvium. 

 ,, 3&-3«. First four pairs of pereiopoda within their exuvium. 

 ,, Sv. Fifth pleopod ; portion of outer branch within its exuvium. 

 „ 3v". Fifth pleopod ; one of the hairs enlarged. 



Alpheus (Brephalos) (p. 538). 

 „ 4. Lateral view. From a specimen of Alpheus hatched by Dr. Power. 

 „ 4&. First antenna. 

 „ 4c. Second antenna. 

 „ 4z. Telsou. 



Latreutes planus (p. 584). 

 „ 5. Lateral view ; enlarged twelve times. 



Latreutes unidentatus (p. 586). 

 „ 6. Lateral view ; enlarged twelve times. 



