14 STALK- AND SESSILE-EYED CRUSTACEA 
post-branchial line, which is continued to the posterior margin of the 
cardiac region. Teeth of the latero-anterior margin ten, usually large 
and flattened. Front narrow, tridentate (the internal orbital angele 
excluded), projecting horizontally beyond the level of the upper orbital 
margin. Inner antenne longitudinally plicate beneath the front. 
Basal joint of the external antenne fillmg the internal orbital angle, 
with the flagellum excluded from the orbit. Orbits small, nearly 
circular, External maxillipeds long, third jomt usually rounded. 
Anterior legs compressed, subequal. Ambulatory legs rather long and 
slender. Abdomen of the male five-jomted, third, fourth, and fifth 
joints coalescent. 
18. Cancer novee-zealandie. 
Platycarcinus nove-zelandie, Jacquinot and Lucas, Voy. Pole Sud. 
Zool. ii, Crust. p. 34, pl. in, fig. 6, (1853). 
Cancer nove zelandie, Alph. M. Edw. Nouv. Archiv. Mus. Hist. 
Nat. i, p. 189, (1865); Miers, Zool. Erebus and Terror, Crust. p. 2, 
Plady weno, eT 4). 
Carapace wide, moderately flattened in the male, much more in the 
female. Surface covered with little granulations ; regions scarcely 
distinct. Latero-anterior margin with ten crenated lobes, which pro- 
ject very slightly beyond their lines of coalescence. Behind the tenth 
lobe there is a slight, scarcely marked projection, which gives rise 
to the granulous post-branchial Ime. Upper orbital margin without 
either tooth or spine. Internal orbital angle less prominent than the 
front. Front with three teeth, the median tooth smaller and more 
depressed than the rest. Anterior legs with the wrist very granulous 
externally, with a large tubercle near the margin, and a strong tooth on 
the inner side; hand granulous above, with two parallel limes, each 
having three or four tubercles, which are larger than the granulations, 
and with five well marked granulous lnes on the outer side; thumb 
eranulous above, its extremity as well as that of the finger, black. 
Ambulatory legs robust and of moderate length. Seventh jomt of the 
abdomen of the male slender and elongate. Length, 14 in.; breadth, 
231m, (A. M. i). 
New Zealand (Coll. Brit. Mus.) ; Akaroa (Hombr. and Jacq.). 
This species only differs in the somewhat more acute tubercles of 
the hands and teeth of the antero-lateral margins, from the C. plebetus, 
Poeppig, which is found on the coast of Chil. 
