12 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 120 
Charybdis (Charybdis) orientalis Dana.—Leene, 1938, pp. 68-72, figs. 32-34 
(excluding some synonymy).—Stephenson, Hudson, and Campbell, 1957, 
pp. 502-503, figs. 2B, 3B, pls. 3 (fig. 1), 4G.—Crosnier, 1962, pp. 80-81. 
Not Charybdis orientalis Edmondson, 1946, p. 281, fig. 173e (=C. hawaiensis). 
Marertau.—China: Tan Shui Beach, northwest coast of Taiwan, 
Aug. 15, 1956, R. E. Kuntz, 1 female (44 mm.). 
Distripution.—Madagascar and East Africa to Japan and 
Australia. 
Subgenus Goniohellenus Alcock, 1899 
Charybdis (Goniohellenus) truncata (Fabricius) 
Portunus truncatus Fabricius, 1798, p. 365 (fide Leene, 1938). 
Charybdis (Goniohellenus) truncata (Fabricius)—Leene, 1938, pp. 118-121, 
figs. 66, 67—Stephenson, Hudson, and Campbell, 1957, pp. 503-504, figs. 
2D, 3E, pls. 3 (fig. 3), 41—Stephenson, 196la, p. 117.—Crosnier, 1962, 
pp. 87, 89, figs. 149-150, pl. 8 (fig. 1) —Miyake, Sakai, and Nishikawa, 1962, 
p. 128 (record only). 
Martertau.—Philippines: Sta. 5442, west coast of Luzon, South 
Fernando Point Light, 16°30’36”N., 120°11’06”E., 45 fm., coarse 
sand, May 11, 1909, Alb., 1 male (23 mm.). 
Distripution.—Madagascar, Ceylon, India, Japan, Philippines, 
and Australia. 
Charybdis (Goniohellenus) vadorum Alcock 
Charybdis (Goniohellenus) hoplites var. vadorum Alcock, 1899, p. 67. 
Charybdis (Goniohellenus) vadorum Alcock.—Leene, 1938, pp. 114-117, figs. 
63-65. 
Marteriau.—Philippines: Sta. 5442, west coast of Luzon, South 
Fernando Point Light, 16°30’36”N., 120°11’06”E., 45 fm., coarse 
sand, May 11, 1909, Alb., 1 male (17 mm.), 1 female (21 mm.). 
Remarks.—The carapace ornamentation is slightly different from 
that figured by Leene, the mesobranchial granulated areas being 
distinctly separated from the posterolaterals. The frontal incisions 
separating the lateral frontal teeth from the remainder are deep and 
relatively broad, more so than Leene’s figure 63. This causes diffi- 
culties in her key (pp. 22-23). 
Distripution.—Red Sea and Persian Gulf to Hong Kong. 
Subgenus Gonioneptunus Ortmann, 1893 
Charybdis (Gonioneptunus) bimaculata (Miers) 
Goniosoma variegatum var. bimaculatum Miers, 1886, p. 191, pl. 15 (fig. 3). 
Charybdis (Gonioneptunus) bimaculata (Miers).—Leene, 1938, pp. 126-129, figs. 
70, 71.—Stephenson, Hudson, and Campbell, 1957, pp. 504-505, figs. 2J, 
3K, pls. 3 (fig. 4), 4H, 5A. 
