BRACHYURA AND MACRURA OF HAWAIIAN ISLANDS. 
909 
Sergestes robustus Smith. 
(PI. xviii, fig. 1.) 
Sergestes, sp., Smith, Proc. U. S. Nat. Mus., Ill, 1881, 445. 
Sergestes robustus Smith, Bull. Mus. Comp. Zool., 1882, X, 97, pi. xvi, figs. 5-86; Rept. U. S. Fish 
Commr. for 1882, 416 [72], pi. vm, figs. 3-66 (1884); Rept. U. S. Fish Commr. for 1885, 
697 [93], pi. xx, fig. 6 (1886). Hansen, Proc. Zool. Soc. London, 1896, 949. 
Sergestes bisulcatus Wood-Mason, Ann. Mag. Nat. Hist. (6), VII, 1891, 190; (6) VIII, 1891, 353. 
Faxon, Mem. Mus. Comp. Zool., XVIII, 1895, 210, pi. lii. Hansen, Proc. Zool. Soc. Lon- 
don, 1896, 949. Alcock, Illus. Zool. Investigator, Crust., pi. l, figs. 1-16, 1901; Desc. Cat. 
Indian Deep-Sea Crust. Dec. Macr. Anom., 49, 1901. 
Sergestes phorcus Faxon, Bull. Mus. Comp. Zool., XXIV, 1893, 217. 
Distribution . — Kaiwi Channel, 313 to 460 fathoms, stations 3470, 3471, 3473, 4106, and 4110; vicinity 
of Kauai Island, 275 to 368 fathoms, stations 4025; west coast of Hawaii Island, 382 to 253 fathoms, 
station 4041. 
Of the above specimens two only from stations 4106 and 4110 correspond to the typical form; the 
others differ only in having a small but distinct hepatic spine; the presence or absence therefore of 
this spine can not be considered a specific character. 
There is no indication on the labels that the specimens did not come from the depths cited. 
Sergestes edwardsii Kroyer. 
Sergestes Edwardsii Kroyer, Kongel. Danske Vidensk. Selsk. Skr., 5 Raekke, naturvidensk. math, 
afd., IV, 1859, 246, 277, pi. iv, fig. 9 a-k. 
Sergestes edwardsii Faxon, Mem. Mus. Comp. Zool., XVIII, 1895, 212, pi. li, figs. 1-1 e. Perhaps 
not S. halia Faxon. (See Hansen, p. 962.) 
Sergestes edwardsi Hansen, Proc. Zool. Soc. London, 1896, 950 and 961. 
Two small specimens were taken in 50 fathoms in the open intermediate tow-net at station 3806, 
between Erben Bank and Kaiwi Channel. 
Sergestes oculatus Kroyer. 
Sergestes oculatus Kroyer, Kongel. Danske Vidensk. Selsk. Skr., 5 Raekke, naturvidensk. math, 
afd., IV, 1859, 243 and 277, pi. in, fig. 5a-/. Bate, Challenger Macrura, 406, pi. lxxiv, fig. 1, 
1888. Hansen, Proc. Zool. Soc. London, 1896, 950 and 963. 
Distribution . — Between Honolulu and Laysan, surface, station 3929; vicinity of Kauai Island, sur- 
face, station 3981; west coast of Hawaii Island, surface, station 4037; 4 specimens in all. 
Specimens about 12 and 13 mm. long. 
Recorded by Bate from 5° south of Hawaiian Islands, and near the Hawaiian Islands. 
According to Hansen this is the Mastigopus of S', edwardsii. 
Sergestes parvidens Bate. 
Sergestes parvidens Bate, Challenger Macrura, 409, pi. lxxiv, fig. 3, 1888. Hansen, Proc. Zool. 
Soc. London, 1896, 950 and 964. 
North of Hawaiian Islands (Bate). 
According to Ortmann and Hansen a young stage of S. vigilax Stimpson. 
Sergestes armatus Kroyer. 
Sergestes armatus Kroyer, Kongel. Danske Vidensk. Selsk. Skr., 5 Raekke, naturvidensk. math, 
afd., IV, 1859, 260 and 279, pi. m, figs. 6 a-e. Bate, Challenger Macrura, 401, pi. lxxiii, fig. 1, 
1888. Hansen, Proc. Zool. Soc. London, 1896, 950 and 966. 
Between Erben Bank and Kaiwi Channel three specimens, taken in surface tow-net. The largest, 
about 17 mm. long, bears a spine on each of the first five abdominal segments, while the other two 
specimens, each about 10 mm. long, have spines on the second to fifth segments. 
Recorded by Bate, north of Hawaiian Islands, latitude 30° 22 / north, longitude 154° 56' west, and 
also between Honolulu and Japan. 
