OF NEW ZEALAND. 59 
of the fourth pair nearly conical. Fifth pair of legs slender and 
concealed beneath the carapace. Sternum linear. Abdomen long, 
terminal segment far exceeding in length the rest of the abdomen. 
64. Remipes marmoratus. 
Remipes marmoratus, Jacquinot and Lucas, Voy. Pole Sud Zool. ii, 
p. 97, pl. viii, fig. 22, (1855). 
Regularly oval. Carapace elongate, narrow, transversely rugose ; 
front narrow, notched in the middle, with the lateral angles rounded, 
sides of the carapace with a groove which is marked with rather strong 
punctures, which are not very closely placed. Internal antennx 
cinereous, short, smooth. External antenne slender. Anterior legs 
whitish, with ashy rings, and brown ciliz. Ambulatory legs with 
ashy spots. Colour of carapace, ashy grey, marbled with, brown. 
Length about 1,}, in.; breadth nearly $in. (J. & L.). 
New Zealand, Raffles Bay (Hombron and Jacquinot). 
This species has the external antenne more slender and elongate, 
and the frontal lobes, (if the figure be correct), more prominent than 
in the other species of the genus. I have seen no specimens. 
Sub-Tribe III. PorceLLANIDEA. 
Porcellaniens, M. Edw. (part) Hist. Nat. Crust. ui, p. 167, (1837). 
Porcellanidea, Dana, U.S. Explor. Exped. xii, Crust. part i, p. 400, 
(1852). 
Carapace flattened, more or less orbiculate in outline, the front 
usually prominent. External antenne with the flagellum very long. 
External maxillipeds imperfectly operculiform, the third joint rather 
shorter than the second, the fourth articulated with the third at its 
antero-external angle. Anterior legs large, more or less compressed. 
Three following legs gressorial, with styliform tarsi. Fifth pair of 
ambulatory legs slender and inflexed. 
PETROLISTHES. 
Petrolisthes, Stimpson, Proc. Acad. Nat. Sci. Philad. p. 227, (1858). 
Carapace depressed, sub-ovate, not broader than long, the front 
triangular, prominent, margin more or less undulated, toothed or entire, 
‘d 12 
Dp 
