TANAIDACEA AND ISOPOD A— TATTERS ALL. 221 



After an examination of Hodgson's type in the British Museum, I have come to the 

 conclusion that the two forms are distinct and that C. hochjsoni may be distinguished 

 from C. australis by the following characters : — 



(1) It is not so hairy. 



(2) The big process on the anterior part of tlie abdomen is broader, and the apex 



truncate instead of pointed. 



(3) The small recurved spine-like tubercle at the base of the median tongue of 



the apex of the telson is shorter, less acute, and broader at the base. In 

 C. australis the tubercle is longer and more pointed, and has not the trilobed 

 appearance in dorsal view that it has in C. hodgsoni. 



(4) In C. australis the median lobe at the apex of the abdomen is much shorter 



than the lateral lobes. In C. hodgsoni they are more nearly of the same size. 



(5) C. hodgsoni has the outer uropod of proportionately smaller size and more 



acute at the apex. 



Hansen, 1905 (l), does not mention C. australis, Hodgson, or express any opinion 

 as to its exact place in the family. From my examination of the type and the above 

 specimen of a closely allied species, I believe it has been correctly referred to the genus 

 Cymodoce, where I would, at least provisionally, retain both species. In his key to the 

 genera of the Cymodocini (Hansen, 1905 (l), p. 104) the author defines the genus 

 Cymodoce as "in the male the anterior part of the abdomen is without mesial process, 

 and the endopod of the uropod is generally moderately well developed." C. australis 

 and C. hodgsoni, which both have mesial processes on the anterior part of the abdomen, 

 can hardly be said to come within the above definition. On the other hand, they can 

 just as little be placed in the genera Cilicaea or Cilicaeopsis, which are both described 

 as h-aving the endopod of the uropod very short or quite rudimentary. Hansen has 

 already commented on the very slight value of the latter two genera, and the species 

 now under discussion lend support to his opinion. 



28. Cymodoce hituberculata, Filhol (?). PI. VI, figs. 9-15. 



Cymodoce hituberculata, Filhol, 1885, p. 457, pi. LV, fig. 2 ; Hutton, 1904, p. 263. 



Occurre7ice. — Stations 133, 135 and 136, Spirits Bay, near North Cape, New 

 Zealand, plankton, nine specimens. 



Remarks. — The specimens are all quite small, measuring from 1 to 4 mm., and none 

 of them are sexually mature. My identification of them is therefore accompanied by 

 a strong element of doubt. I have figured the whole animal from the side, the 

 epistome, and more important appendages, in the hope that the adult animal may 

 some day be found and satisfactorily identified. 



The body is granular and glabrous, without any distinctive armature except on 

 the last abdominal somite (telson), which has two well-marked bosses separated in 

 the median line by a groove. The relative height and contour of these bosses may 



