PLATE IV. 



Fig. I. Siriella mquirctiiis n. sp. (continued). 



Fig. I a. Left gnathopod of an adult female, from below ; >, 24. 



Fig. I b. Endopod of first thoracic leg of the same female ; > 24. 



Fig. \c. Second right male pleopod, from behind; 24. 



Fio-. \d. Pseudobranchia of the same pleopod, from behind; ;• 48. 



Fio-. \e. Fourth right pleopod of an adult male from Stat. 194 — 197, from behind; • 24. 



Fig. i/. Distal part of the endopod of the pleopod shown in fig. \e, from behind; X 144. 



Fi". \cr. Fourth right pleopod of an adult male from Stat. 35, from behind; X 26. The lateral sets of 



the endopod and all setae of the exopod omitted. 



Fio-. \h. Distal part of the endopod of the pleopod shown in fig. i^'-, from behind; X 95. 



Fio-. \i. End of sixth abdominal segment with telson and left uropod of a female, from above; X 24. 



Fio. \k. Distal end of the female telson shown in fig. i /, from above; X 70. 



Fio-. i/. Exopod of left uropod of an adult male, from above; ■• 24. 



Fig. 2. Siriella inornata n. sp. 



Fig. 2a. Anterior part of an adult male from Stat, ^-j ; ■; 14. 



Fio. 2b. Major part of right antenna of a male, from above; •: 24. 



Fio. 2f. Second right pleopod of a male, from behind; ■ 24. 



Fig. 2d. Pseudobranchia of the pleopod shown in the preceding figure, from behind; x 43- 



Fio. 2c. Fourth right pleopod of a male, from behind; ■ 24. 



Fio. 2/. Distal part of the endopod of the pleopod shown in fig. 2e, from behind; :• 84. 



Fig. 2g. Distal part of the exopod of the pleopod shown in fig. 2e, from behind; ■ 84. 



Fio-. 2/2. Distal part of the terminal spine of the exopod of the pleopod shown in fig. 2e; X 336. 



Fitr. 2i. Exopod of left uropod of a male, from above; /- 24. 



Fio. 2k. Distal part of telson of a male, from above; >; 78. 



Fig. 3. Siriella media n. sp. 



Fio. 3(7. Major part of right antenna of a male from Stat. 37, from above; •: 24. 



Fig. 3/^. Major part of right antenna of a female from Stat, ij, from above; ;■, 24. 



Fig. 3c. Left gnathopod of a female, from below; 24. 



Fio. 3^/. Left first thoracic leg of the same female, from below; ■ 24. 



Fio. 3^.. Distal part of the endopod of fourth right male pleopod, from the outer side; X lOO. 



Fio-. 3/. Distal part of the exopod of fourth right male pleopod, from behind; X 100. 



Fio-. 30-. End of sixth abdominal segment with telson and left uropod of a female, from above; X 24. 



Fio-. 3/^. Distal part of the female telson shown in fig. ig, from above; • 72. 



Fig. 3/. Exopod of left uropod of a male, from above; X 24. 



Fig. 3/-. Distal part of telson of a male, from above; X 78. 



