30 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 120 
3. (2) Cheliped very long and slender, 24 times the carapace length. 
P. lengispinosus Sakai, 1939 
Chelipeds of moderate length and robustness, less then 2% times the 
carapaceilengthny. 2 0. scien cosets ce tenet tot a Semmens Mae os M4 
4. (3) Carapace with conspicuous anoreule elevations within the granular 
Patches" wwe4 es MSs ee SHES Tenet) Bere eee qogtar 
Carapace Gun) Peon dung tianse: tubercular elevations with- 
in the granular patches . . . . . P. longispinosus Rathbun, 1906 
5. (4) Carapace strongly embossed, with spiniform elevations in cardiac and 
mesobranchial areas (lateral postcardiacs distinct and separate). 
P. tenuicaudatus Stephenson, 196la 
Carapace moderately strongly embossed with tuberculate but not 
spiniform elevations in the cardiac and mesobranchial areas. . . 6 
6. (5) Metagastric area with two tubercles, lateral postcardiac granular patch 
not distinctly recognizable . . . P. macrophthalmus Rathbun, 1906 
Metagastric area with short ridges but without tubercles, lateral post- 
cardiac granular patch distinct and separate. 
P. iranjae Crosnier, 1962 
Portunus emarginatus Stephenson and Campbell 
Portunus emarginatus Stephenson and Campbell, 1959, pp. 107-108, figs. 2H, 
3H, pls. 2 (fig. 4), 4H, 5H.—Crosnier, 1962, pp. 66-68, figs. 108, 112-114, 
116, 120-121. 
?Portunus longispinosus Rathbun.—Stephenson and Campbell, 1959, pp. 104- 
106, figs. 2F, 3F, pls. 2 (fig. 2), 4F, 5F. 
Martertau.—Palau: Sta. 124-1183, Yos Passage, W. of Kasao Reef, 
34 mi. SSE. of Ngaremdiu, E. of Urukthapel, sand, 15-18 fm., 
Aug. 24, 1955, 2 males (10, 20 mm.). 
Portunus iranjae Crosnier 
Portunus iranjae Crosnier, 1962, pp. 61-65, figs. 107, 110-111, 115, 118-119, 
pl. 4 (fig. 2). 
MareriAu.—Philippines: Reef at Tileg, Lubang I., July 11, 
1908, Paul Bartsch, Alb., 1 male (19 mm.). 
Tuamotus and Societies: Papetoai Bay, Moorea, poison sta. shore 
reef, 3-20 ft., Apr. 30, 1957, J. Randall, 1 male (23 mm.). 
Portunus macrophthalmus Rathbun 
Portunus macrophthalmus Rathbun, 1906, p. 871, fig. 31, pl. 12 (fig. 15). 
Marertau.—Philippines: Sta. 5218, Anima Solo I., between Burias 
and Luzon, 20 fm., Apr. 22, 1908, Alb., 1 ovig. female (11.5 mm.). 
Remarks.—In comparison with the various species examined by 
the authors, the present specimen comes closest to P. tenuicaudatus 
but differs in having more protruding and sharper lateral frontal 
teeth, these being distinctly acute; in having the carapace less strongly 
embossed, this applying particularly to the cardiac eminences and 
the lateral postcardiacs, which are only indistinctly recognizable; 
in possessing two small tubercular eminences instead of rows of gran- 
