

PLATE XIII. 



Undinella oblonga, G. 0. Sars, 

 (continued). 



Fig. 1. Posterior antenna. 



2. Mandible with palp. 



3. Maxilla. 



4. Anterior maxilliped. 



5. Posterior maxilliped. 



6. Natatory leg of 1st pair. 



7. Do. of 2nd pair. 



& Do. of 3rd pair. 

 9. Do. of 4th pair. 



10. Last pair of legs of female. 



