G. M. Thomson. — On the New Zealand Copepoda. 115 



about thrice as long as broad, and nearly equal in length to the last two 

 abdominal somites ; terminal setas five, finely plumose, three short and two 

 of moderate length, the longest being more than equal to the length of the 

 abdomen. Length, -^ of an inch." 



Hab. One specimen obtained by the dredge in Otago Habour in 

 7 fathoms ; its length was only -^ of an inch, but in all respects except 

 size it conforms exactly to the above description. This species occurs in 

 the British seas, but has apparently only been recorded by Messrs. Brady 

 and Eobertson. 



EXPLANATION OF PLATES V.-XI. 

 (The small figures indicate the number of times the figures have been magnified.) 



Plate V. 

 Figs. 1-8. Amymome clausii. 



1. Adult animal ; 2. anterior antenna ; 3. mandible ; 4. maxilla ; 5. leg of 

 the first pair ; 6. leg of the third pair ; 7. leg of the fourth pair ; 8. in- 

 tegument. 

 Figs. 9-14. Conostoma elliptica. 



9. Adult animal; 10. anterior antenna; 11. mouth-siphon; 12. anterior 

 foot-jaw; 13. posterior foot-jaw ; 14. leg of the first pair. 



Figs. 15-19. Thorellia brunnea, var. antarctica. 



15. Anterior antenna; 16. posterior antenna; 17. posterior foot-jaw; 

 18. foot of fifth pair ; 19. caudal lamella? and setae. 



Plate VI. 

 Figs. 1-9. Boeclcia triarticulata. 



1. Adult female; 1. adult male; 2. anterior antenna (male), right side; 



3. posterior antenna ; 4. mandible and palp ; 5. maxilla ; 6. anterior 

 foot-jaw; 7. posterior foot-jaw; 8. leg of fifth pair (female); 9. leg of 

 fifth pair (male). 



Figs. 10-11. Porcellidium fulvum. 



10. Leg of first pair ; 11. extremity of abdomen and fifth pair of feet (female). 

 Figs. 12-16. Harpacticus chelifer. 



12. Anterior antenna (female) ; 13. anterior antenna (male) ; 14. posterior 

 foot-jaw ; 15. leg of first pair ; 16. leg of second pair. 



Plate VII. 

 Figs. 1-7. Scutellidium tisboides. 



1. Adult female ; 2. anterior antenna (female) ; 3. anterior antenna (male) ; 



4. posterior antenna ; 5. foot of first pair ; 6. foot of fifth pair (female) ; 

 7. posterior foot-jaw. 



Figs. 8-13. Porcellidium fulvum. 



8. Adult female; 9. adult male ; 10. anterior antenna (female) ; 11. anterior 

 antenna (male) ; 12. posterior antenna ; 13. portion of integument. 



Plate VII. 

 Figs. 1-8. Idya furcata. 



1. Anterior antenna (fern.), (a) rostrum ; 2. posterior antenna ; 3. mandible; 

 4. anterior foot-jaw ; 5. posterior foot-jaw ; 6. foot of first pair ; 7. foot of 

 fifth pair (fern.) ; 8. adult male. 



