TANAIDAOEA AND ISOPODA— TATTERSALL. 213 



peduncle of the first antenna. The fourth and fifth joints are sub-equal in 

 length and longer than any of the first three. The flagellum has about 

 twenty-five joints, the distal joints about double the length of the proximal 

 ones. 



The appendix masculina on the second pleopods of the male (pi. IV, fig. 10) is 

 longer than the rami of the pleopods, its distal half very acutely pointed in 

 tlae form of a stylet. 



19. Aega novi-zealandiae, Dana. PI. IV, figs. 11-14. 



A. novi-zealandiae, Dana, 18.52, p. 767, pi. LI, figs. '2a-c ; Miers, 1876, p. 108; Thomson 

 and Chilton, 1886, p. 153; Hutton, 1904, p. 262; Thomson, 1913, p. 246. 



Occurrence. — Station 96, 7 miles E. of North Cape, New Zealand, 70 fathoms, 

 bottom fauna, one ovigerous female, 13 "5 mm. 



Remarks. — Dana's original description is short and inadequate, and though the 

 species has since been recorded by Thomson and Chilton, no more complete description 

 has been published. It is therefore with considerable doubt that I refer the present 

 single specimen to Dana's species. There is nothing in Dana's description and figures 

 to suggest the possibility of my specimen belonging to another species. In the hope 

 that the species may be recognised and more fully described in the future, I add a few 

 notes. The body is absolutely smooth, without carinae, ridges or tubercles of any 

 kind, and is covered on the dorsal surface by a regular series of minute red flecks or 

 chromatophores. These microscopical dots of pigment have persisted extraordinarily 

 well in the spirit specimen. 



The specimen is to be placed in Section 2a of Schioedte and Meinert's Synopsis of 

 the Species of Aega (1879, p. 339), and, having the eyes distant, it comes nearest to 

 the two Northern species, A. arctica, Liitken, and A. ventrosa, M. Sars. 



The head is furnished with a small rostrum, which curves over ventrally to meet 

 the frontal lamina, and thus separates the bases of the antennules. 



The eyes are of moderate size, black in colour, separated from each other by a 

 distance almost equal to the length of each eye. 



The frontal lamina and clypeus are almost identical with those figured by 

 Schioedte and Meinert for A. ventrosa (1879, tab. IX, fig. 8), and it is sufiicient to 

 refer to this figure for their general structure. 



The antennules reach the posterior margin of the first free thoracic somite. 

 The peduncle is slightly shorter than the head, and equal to the first four joints of the 

 peduncle of the second antenna. The third joint of the peduncle is about equal to or 

 slightly longer than the first two combined, and the flagellum is composed of thirteen 

 joints. 



The antennae reach the posterior margin of the third free thoracic somite, and 

 the flagellum is composed of eighteen joints. 



