72 STALK- AND SESSILE-EYED CRUSTACEA 
PARANEPHROPS. 
Paranephrops, White, in Gray’s Zool. Miscell. u, p. 79, (1842); 
Dana, U.S. Explor. Exped. xii, Crust. part i, p. 523, (1853). 
Rostrum broad, armed on either side with teeth or spmes. Basal 
scale of the external antenne longer than the peduncle of the antenne. 
Anterior legs somewhat elongated, and armed with series of spines. 
Abdomen of male without supplementary legs; terminal segment 
formed of a single piece. Terminal segment and appendages to the 
penultimate segment not semi-membranaceous. 
77. Paranephrops planifrons. 
Paranephrops planifrons, White, Zool. Miscell. p. 79, (1842); 
Dieffenb. Voy. New Zealand ii, p. 267, (1843); Miers, Zool. Erebus 
and Terror, Crust. p. 4, pl. i, fig. 1, (1874). 
Paranephrops tenuicornis, Dana, U.S. Explor. Exped. xii, Crust. 
part 1, p. 527, pl. xxxiii, fig. 4, (1852). . 
Carapace nearly cylindrical, surface somewhat scabrous, with a short 
median ridge behind the rostrum, two spines on each side of the 
carapace behind the eyes, and several spines on the lower surface 
beneath the enlarged hase of the external antenne. Rostrum elongate, 
triangular, margins raised, with three or four spines. Basal scale of 
the external antenne very large, narrowing anteriorly, with a deep 
longitudinal groove above, reaching beyond the extremity of the 
rostrum. Anterior legs elongated, slender, arm with a series of spines 
extending along the whole length of the inferior margin ; hand slender, 
armed with spines ranged in longitudinal series, spines longest on the 
upper margin, palm about twice as long as wrist; fingers spinose 
and hairy. Four succeeding pairs of legs short, slender, slightly hairy. 
Length about 3 in. (W.). 
New Zealand (Coll Brit. Mus.); Auckland (Heller). 
I unite the P. tenuicornis, Dana, with P. planifrons, the prominence 
of the spines on the hands and the number of spines on the rostrum 
being subject to variation, 
78. Paranephrops setosus. 
Paranephrops setosus, Hutton, Ann. Mag. Nat. Hist. (ser. 4) xu, 
p. 402, (1873), 
