CEUSTACEA COLLECTED IN PUCET SOUND, N.A. 287 



Fig. 2. Spirontocaris herdmani, n. sp. Carapace. Twice 



the natural size. 

 Fig. 3. Mandible. Mceroides thompsoni, n. gen. & sp. 

 Fig. 4. Second gnathopod from inside. 

 Fig. 5. Urosome. 

 Fig. 6. Third pleon segment. 

 Figs. 7 — 10. Aoroides Columbia, n. gen. & sp. ? . 

 Fig. 7. Mandible. 



Fig. la. Another mandible (part) showing cutting edges. 

 Fig. 8. First gnathopod. 

 Fig. 9. Second gnathopod. 

 Fig. 10. Telson and third uropod. 



Figs. 3, 8, 9, 10 drawn with 1 in., figs. 4, 5, 6 with 

 2 in., figs. 7a, 7, with ^ in. objectives. 



