PLATE XCIX 



Alpheus rapax (p. 552). 

 Fig. 1. Lateral view ; enlarged twice. 

 „ lc. Cephalon ; b, first antenna, left side ; c, second antenna, right side. 

 „ Ik First pereiopod ; larger chela. 



„ Ik". First pereiopod ; showing dactylos and pollex, enlarged. 

 „ lz. Telson. 



Alpheus crassimanus (p. 554). 

 „ 2. Lateral view ; enlarged twice. 

 ,, 2k. First pereiopod; larger chela. 



Alpheus Issvis (p. 555). 

 „ 3. Lateral view ; enlarged three times. 

 „ 3c. Cephalon, with first and second antenna?. 

 ,, 3c'. Carapace, showing vessels of circulation. 

 „ 3k. First pereiopod ; larger chela. 



Alpheus prolijjcus (p. 556). 

 ,, 4. Lateral view ; enlarged three times. 

 ,, 4c. Cephalon, with first and second antennae. ' 

 ,, Am. Third pereiopod. 



