Kramer. — Pelagic Copepods and Cladoceres of Auckland. 221 ' 



Antenna i. 8-jointecl. 



Antenna n. (fig. 4, $ ; fig. 6, 5 )) Claws of particular form, 



Maxilliped n. (fig. 5, $ ; fig. 7, $ ) [ as the figures show. 



Swimming-feet I., II., in. (pes i., fig. 8 ; pes in., fig. 9). 

 Kamus externus and internus of every foot 3-jointed. 



Swimming-foot iv. (fig. 10). Ramus externus 3-jointed. 

 Ramus internus reduced, small, with two long setae. 



The abdomen is 2-jointed (fig. 2, <? ; fig. 3, ?). The 

 first genital segment bears one long and one very short seta. 

 The second anal segment is smaller than the first. The male 

 bears on the under-margin of the first segment a small hook 

 (fig. 2), as in G. obtusus, which it resembles altogether much 

 more than the female of the new species resembles the female 

 of G. obtusus. 



The proportions of abdomen and furca are as follow : — 



Furca. 



11 



8 

 5 



8 



II. CLADOCERES. 



I little hoped when I began my examination of Auckland 

 Harbour to find so many kinds of Cladoceres — three of the 

 four genera belonging to the saltwater : Podon, Evadne, 

 Penilia, missing only Bosmina. Three of the four species 

 are new. They are as follow : — 



1. Pam. Podontidse. 



(1.) Podon polyphemoides, Levckart. 

 (2.) Podon trisetosus, n. f.p. 

 (3.) Evadne aspinosa, n. sp. 



2. Fam. Sididse. 



(4.) Penilia pacifica, n. sp. 



As before, I only give a short description, the figures show- 

 ing best the differences. 



1. Fain. Podontid^:. 



I. Podon, Lilljeborg. 

 Head straight, separated from the body by a small incision. 



1. Podon polyphemoides, Leuckart. Plate XXL, figs. 1-5. 

 The species is frequent in the Baltic Sea, and is also 

 abundant in the Hauraki Gulf. To distinguish the different 

 species of Podon it is necessary to mark the setae of the 

 small ramus externus (appendix externus) of the four swim- 

 ming-feet. A comparison of the old species and the new one 

 shows as follows : — 



