154 C. ISHIKAWA. 



Fig. la. Left shell-gland of the same more highly magnified. Zeiss' objective D, eye- 

 piece :i. 



Fig. 2. Another parthenogonotic female, viewed from the dorsal side. Zeiss' objective 

 A, eye-piece 2. 



Fig. 3. Male. Zeiss' objective B, eye-piece 1. 



Fig. 3a. First antenna of a mile moro highly magnified. Zeiss* objective D, eye- 

 piece 2. 



Fig. 3b. Maxilla and first leg of a male. Zeiss' objective D, eye-piece 2. 



Fig. 4. Female with two gamogenetic eggs in its ephipiuin. The egg placed pos- 

 teriorly ought to lie parallel with the preceding one. Zeiss' objective B, 

 eye-piece 1. 



Fig. 4a. Caudal spine and the anal denticles of the same, more highly magnified. 

 Zeiss' objective D, eye-piece 2. , 



Fig. 4b. Spine and the posterior part of the carapace of the same more highly 

 magnified. Zeiss' objective D, eye-piece 2. 



Fig. 5. Young female. Observe the position of the spine of the carapace as com- 

 pared with that of a large female. Fig. 1. Zeiss' objactive A, eye-piece 1. 



