BRACHYURA AND MACRURA OF HAWAIIAN ISLANDS. 
871 
Portunus (Achelous) argentatus (A. Milne Edwards). 
Neptunus argentatus A. Milne Edwards, Arch. Mus. Hist. Nat. Paris, X, 1861, 332 and 339, pi. xxxi, 
fig. 4. 
Honolulu (Cano). 
Two young specimens, each about 3 mm. long, from the surface on north coast of Molokai Island, 
station 3889, belong to the argentatus group, but are too small to be determined with certainty. 
Portunus (Achelous) granulatus (A. Milne Edwards). 
(PI. xii, fig. 2. ) 
Lupea granulala A. Milne Edwards, Hist. Nat. Crust., I, 1834, 454. 
Neptunus ( Achelous ) granulatus Alcock, Jour. Asiat. Soc. Bengal, LXYIII, 1899, 45. 
Distribution. — South coast of Molokai Island, surface and 43 to 66 fathoms, stations 3846, 3850; 
Auau Channel, 21 to 28 fathoms, station 3874; vicinity of Modu Manu, 20 to 31 fathoms, stations 4158, 
4159; Hilo, 1901; Oahu, H. Mann, 1864, in Museum of Comparative Zoology, determined by W. Faxon. 
Laysan (Lenz). 
Portunus (Achelous) orbicularis (Richters). 
(PL xii, fig. 4.) 
Achelous orbicularis Richters in Mobius, Meeresf. Maurit., 153, pi. xvi, figs. 14, 15, 1880. 
Neptunus ( Achelous ) orbicularis Alcock, Jour. Asiat. Soc. Bengal, LXVIII, 1899, 47. 
Vicinity of Laysan Island, 16 fathoms, station 3962. 
Portunus (Xiphonectes) longispinosus (Dana). 
(PI. xii, fig. 6.) 
Xiphonectes longispinosus Doflein, Abh. math.-phys. Cl. k. baver. Akad. Wiss., Miinchen, XXI, 
1902, 659, pi. v, fig. 7. 
Portunus ( Xiphonectes ) longispinosus Rathbun, Bull. Mus. Comp. Zool., 
XXXIX, Dec., 1902, 130, and synonymy. 
Honolulu Reef; Hilo; weather coast of Kauai, A. Garrett, in Museum 
of Comparative Zoology. 
Hawaiian Islands (Dana). 
Portunus (Xiphonectes) macrophthalmus sp. nov. 
(PI. xii, fig. 5.), 
Allied to P. (X) longispinosus. Fronto-orbital width less; median pair 
of frontal teeth narrower, submedian pair more triangular; orbits narrower 
and more deeply cut. Antero-lateral spines fewer (four or five), excluding 
the orbital and the long lateral spine; in P. longispinosus they are usually six 
(occasionally seven), divisible into two sets, the two anterior separated by a 
wider space from the four posterior. Outer tooth of orbit narrow', acutely 
pointed; inner suborbital lobe triangular; merus of last pair of legsunarmed; 
crest of third segment of male abdomen very prominent, notched in the 
middle; penult segment longer than broad, much constricted. 
Dimensions. — Male, station 4160, length 11.9, entire width 27.5, fronto- 
orbital width 10.4; female, station 3986, length 4.7, entire width 9.7, fronto- 
orbital width 4.9 mm. 
Distribution. — South coast of Molokai Island, 23 to 24 fathoms, station 
3847; vicinity of Kauai Island, 362 to 55 fathoms, station 3986; vicinity of Modu Manu, 31 to 39 fath- 
oms, station 4160 (type locality) . Cat. No. of type, 29688. 
Fig. 31 . — Portunus ( Xipho- 
nectes ) macrophthalmus, 
abdomen of type male, 
X-3J. 
Fig. 30 . — Portunus ( Xipho- 
nectes ) longispinosus, 
Honolulu Reef, abdo- 
men of male, x 2g. 
