24 STALK- AND SESSILE-EYED CRUSTACEA 
Neptunus, Pontus, De Haan, Faun. Japon. Crust. p. 7, (1833). 
Lupa, Dana, (part) U.S. Explor, Exped. xiii, Crust. part i, p. 268, 
(1852). 
Neptunus, A. M. Edw. (part) Archiv. Mus. Hist. Nat. x, p. 314, 
(1861). 
Carapace very wide, with transverse granulous lines. Latero- 
anterior margins with nine or more teeth (including the external 
orbital angle), the last tooth much the longest. Front wide, and 
divided into five or six teeth. Upper orbital margin with two fissures. 
Basal jomt of the external antenne large, flagellum placed in the 
internal orbital hiatus. External maxillipeds short, and not produced 
over the epistome. Anterior legs usually long, arm with acute spines 
upon the anterior margin; hand nearly prismatic, with longitudinal 
ridges, giving rise above to spiniform tubercles. Thigh of the swim- 
ming legs with the lower margin usually destitute of spines. Median 
suture of the sternum extending over the three last segments of the 
body. 
25. Neptunus sayi. ‘ 
Lupa pelagica, Say, Journ. Acad, Nat. Sci. Philad. i, p. 97, (1817). 
Lupa sayi, Gibbes, Carcin, Coll. U.S. p. 178, (1850); Dana, U.S. 
Explor. Exped. xii, Crust. part i, p. 273, pl. xvi, fig. 8, (1852). - 
Neptunus sayi, Alph. M. Edw. Archiv. Mus. Hist. Nat. p. 317, pl. 
KIX ie, 2, (SGM): 
Carapace regularly convex, finely granulated, with the epibranchial 
lines scarcely marked. Front divided into six nearly equal teeth, of 
which the two median are placed close to one another. Arm long and 
slender, with four spmes upon its anterior and none at the extremity of 
the posterior margin. Wrist with two spines, one at the antero-internal 
angle, and one on the outer surface. Hand with smooth longitudinal 
ridges, and two spines above, one on the inner margin above the base 
of the mobile finger, and one on the outer margin at the base of the 
palm. Ambulatory legs rather long. Abdomen of ¢ nearly trian- 
gular. Length usually about 1 in.; breadth 2in. (A. M. E.). 
New Zealand (Coll. Brit. Mus.). 
To this species I refer a single specimen (female), from New 
Zealand, in the Collection of the British Museum, which agrees, com- 
pletely, m all external characteristics with the specimens of WV. say, 
from different parts on the American Coast. This species as at present 
