BRACHYURA AND MA CRURA OF HAWAIIAN ISLANDS. 
897 
Parribacus papyraceus, sp. nov. 
(PL xviii, fig. 5.) 
A small species closely related to P. antarcticus. 
Carapace with sides convex, widest at tip of fourth tooth (counting from the front). Regions of 
carapace distinctly separated by smooth grooves. Tubercles raised, spaced, larger and more scanty in 
the middle and anterior portion. Median ridge armed with a tubercle on the rostral tooth, a second 
just in front of the posterior line of the orbits, a row of three on the gastric region, a row of six on the 
cardiac region. Dentation of margin of carapace and antennae as in P. antarcticus. 
Sternum of male with a median spine, between the intervals separating second and third and third 
and fourth pairs of feet; two spines side by side between feet of last pair; also a spine at base of each 
foot close to the articulation. 
On coxa of last pair is a long curved spine directed down and back, beside the outward-projecting 
spine which is present in P. antarcticus. 
The two specimens collected are not only of small size but of thin papyraceous texture, and may 
possibly be an immature stage of P. antarcticus or an allied species. 
Dimensions. — Male, station 3821; length of body 58.2, length of carapace 21.4, width of carapace 
32.3 mm. 
Distribution. — South coast of Molokai Island, surface, station 3821 (type locality), one male (Oat. 
No. 30265). Hilo, Hawaii, H. W. Henshaw, one male. 
Family PALINURIDJE. 
Panulirus japonicus (de Siebold). 
(PI. v.) 
Palinurus japonicus de Siebold, Spicilegia Fauna 1 Japonic*, 1824, p. 15. De Haan, Fauna Japon., 
Crust., p. 158, pis. xli and xlii, 1841. 
Palinurus longipes A. Milne Edwards, Nouv. Arch. Mus. Hist. Nat. Paris, IV, 1868, 87, pi. xxi 
(not P. ( Senex ) longipes Pfeffer, 1881). 
Senex femoristriga Ortmann, Zool. Jahrb., Syst., VI, 1891, 23, and synonymy. 
Senex japonicus Ortmann, op. cit. , p. 25, and synonymy. 
Honolulu, 1901, 1 female; 1902, 1 male (red variety). Honolulu market, Aug. 15, 1902; 1 male 
(figured), 1 juv., north coast of Maui, 69-78 fathoms, station 4073, 1 large male. 
Laysan (Lenz); Hawaiian Islands (Pfeffer). 
I think that P. japonicus and P. longipes ( =femoristriga ) can scarcely be regarded as distinct. 
We have in the Hawaiian series specimens in which the violet and yellow predominate, as in plate iv, 
and others that are red all over, except for yellow spots, spines, and abdominal stripes. Some have 
the anterior part of the carapace as hairy as in Japanese specimens. There remains only the character 
of the greater or lesser development of the spinules on the antennal segment as a distinguishing feature 
between the form as it exists in Japan and in the Indo-Pacific. 
Panulirus penicillatus (Olivier). 
Astacus penicillatus Olivier, Enc. Meth., Hist. Nat., Insectes, VI, 343, 1791. 
Panulirus penicillatus Bate, Challenger Macrura, 82, pi. xn, fig. 2, 1888. 
Senex penicillatus Ortmann, Zool. Jahrb., Syst., VI, 1891, 28. 
Honolulu, 1891, 2 specimens; 1901, 1 specimen; 1902, 1 male. Kailua, 1901, 1 female. Hilo, 
Hawaii, 19.01, 1 small female. Waiawa, Kauai, V. Knudsen, 1 specimen. Hawaiian Islands, Dr. W. H. 
Jones, U. S. N., 1 male, 1 female, in Museum of Comparative Zoology. 
Panulirus marginatus (Quoy and Gaimard). 
Palinurus marginatus Quoy and Gaimard, in Freycinet, Voyage autour du Monde, Zoologie, p. 537, 
1824 (1825) , atlas, pi. 81. Diet. Class. d’Hist. Nat., atlas, pi. [63]. Milne Edwards, Hist. 
Nat. Crust., II, p. 301 (footnote), 1837. 
This species has not been observed since Quoy and ■Gaimard. It seems to be related to Panulirus 
burgeri (de Haan), and P. dasypus (Latreille); according to the figure, there are four large spines and 
