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. 



— 8. Do. of 3rd pair. 



— 9. Do. of 4th pair. 



— 10. Last pair of legs of female. 



