22 STALK- AND SESSILE-EYED CRUSTACEA 
orbital hiatus very narrow. Colour, brownish. Length 13 in.; 
breadth 2in. (M. E.). 
New Zealand (Coll. Brit. Mus.) ; Bay of Islands (Dana); Australia 
(Coll. Brit. Mus.). 
In the specimens in the Collection of the British Museum which 
are named deplanatus by White, and which I refer to this species, the 
antero-lateral margins are granulous, the anterior tooth very broad, 
and scarcely distinct ; the second, obtuse; the third and fourth more 
acute, but still very broad. If distinct from O. truncatus, this species 
must be designated by White’s name of deplanatus. There are 
specimens in the British Museum Collection from Australia and Lord 
Howe Island. 
EUDORA. 
Eudora, De Haan, Faun. Japon. Crust. p, 22, (1833). 
Ruppellia, M. Edw. Hist. Nat. Crust. i, p. 420, (1834). 
Carapace nearly smooth, and rather convex, with the antero-lateral 
margins arcuate, regularly dentate, shorter than the postero-lateral. 
Anterior legs with the fingers not spoon-excavate at the extremity. 
External antenne with the flagellum completely excluded, but not 
widely separated from the orbital region. Palate with a ridge on 
either side, defining the margin of the efferent channel. 
28. Eudora tetraodon. 
Eudora tetraodon, Heller, Voy. Novara, Crust. p. 14, pl. ui, fig. 3, 
(1865). 
Carapace convex, distinctly areolated, with a deep cervical 
groove, the gastric region divided ip front into two epigastric and 
protogastric lobes, but entire behind. Front prominent, quadrilob- 
ate; with the median lobes broad, jround, the outer lobes, smaller. 
Antero-lateral margin four-toothed, the teeth conical, acute; the pos- 
tero-lateral margin elongate, convex, smooth. Anterior legs equal 
thick, with the wrist bidentate within, the hand slightly compressed, 
with the external surface smooth, and with a longitudinal groove near 
the upper margin, Ambulatory legs shorter, and long-hirsute at the 
upper margin, the two last joints also| pubescent below, Length 1? in.; 
breadth 2} in. (HL). \ 
Auckland (Heller), 
I have not seen specimens of this species. 
