PLATE I. 



TYRO SARSI. ? 



Fig. 1. The animal from the side (*/,)■ 



2. » « » above (Vi)- 



3. The eye (^/J. 



4. The first pair of antennse (%)■ 



5. The last joint of the same (*ö/j). 



6. The hibrum ('»/i). 



7. The left mandible (io%). 



8. The tip of the same (-3%). 



9. The right maxilla of the first pair (""V,). 



10. w » >' » » second » ('"%)• 



11. The maxiliipeds, from the inside (^7ij- 



12. The first pair of pereiopoda ('7i)- 



13. The dactyhis of the same (*7jJ. 



14. The second pair of pereiopoda (^Vi)- 



15. The dactylus of the third pair (^"Z,). 



16. The seventh pair of pereiopoda (*/,). 



17. The dactylus of the same ("/i)- 



