DECAPOD CRUSTACEANS OF THE WEST INDIES 93 



In only one locality were large individuals of this species found to be 

 comparatively abundant — in a drainage ditch in a coconut grove on 

 the south side of the mouth of the Layou River (station 108). As in 

 the river, the shrimp appeared in the open only after dark. Even 

 though the water in the ditch was nowhere more than six inches in 

 depth, scores of these shrimp could be seen within an area of 120 square 

 feet (14 square meters). 



Distribution. — North Carolina, U.S.A., to Estado do Rio Grande 

 do Sul, Brazil (Andros I., Cuba, Jamaica, Hispaniola, Puerto Rico, 

 Isla de Vieques, Saint Croix, Saint Martin, Dominica, Martinique). 



Dominica Stations: 14, 15, 36, 37, 38, 56, 57, 62, 72, 81, 108 (0-150 

 ft.). 



Remarks. — The single ovigerous female of this species was collected 

 on February 26. 



18. Macrobrachium carcinus (Linnaeus) 



Figures 21, 256, h 



Cancer Carcinus Linnaeus, 1758, p. 631 [type-locality: "in Americae fluviis" 



(restricted to Jamaica by Ilolthuis, 1952)]. 

 Cancer 44 Linnaeus, 1759, p. 203. 

 Squilla, Crangon, Americana, major Seba, 1761, p. 54, pi. 21: fig. 4 [locality: 



Surinam]. 

 Astacus minor chelis denticulatis Gronovius, 1764, p. 231. 

 Astacus major. — Fermin, 1765, p. 74. 

 Astacus carcinus. — Fabriciua, 1775, p. 414, 

 Astacus 2 Browne, 1789, p. 424 [locality: Jamaica]. 

 Cancer (Astacus) Jamaicensis Herbst, 1792, p. 57, pi. 27: fig. 2 [type-locality: 



Jamaica]. 

 Palaemon carcinus. — Weber, 1795, p. 94. 



Palaemon jamaicensis. — Olivier, 1811, p. 659. — Verrill, 1892, p. 353. 

 Astacus (Palaemon) jamaicensis. — Voigt, 1836, p. 184. 

 Palaemon brachydactylus Wiegmann, 1836, p. 148 [type-locality: east coast of 



Mexico]. 

 Palemon punctatus Randall, 1840, p. 146 [type-locality: "East Indies"?, West 



Indies]. 

 Palemon brevicarpus De Haan, 1849, p. 172 [type-locality?]. 

 Palaemon aztecus De Saussure, 1857c, p. 504 [type-locality: Veracruz, Mexico]. 

 "iPalaemon Montczumae De Saussure, 1857c, p. 504 [type-locality: Veracruz, 



Mexico], 

 Palaemon laminatus (Gollmer ms) Von Martens, 1869, p. 24 [type-locality: 



Caracas]. 

 Palaemon (Macrobrachion) Jamaicensis. — Von Martens, 1872, p. 137. 

 Bithynis jamaicensis. — Pocock, 1889, p. 10. 

 Bithynis aztecus. — Young, 1900, p. 486. 

 1 Bithynis montezumae. — Young, 1900, p. 486. 

 Macrobrachium jamaicense. — Pearse, 1915, p. 551. 

 Palemon ornatus (Forns ms) Torralbas, 1917, p. 616, figs. 56, 57 [type-locality: 



Cuba; not Palaemon ornatus Olivier, 1811]. 

 Palaemon (Macroterocheir) jamaicensis. — De Man, 1925, p. 51, figs. 13a-d. 



