400 PROCEEDINGS OF THE ACADEMY OF [1894. 



XIPHOCARIS v. Martens, 187». 



Ephyra de Haan, Faun. Japon., Crust., Dec. 6, 1849, p. 185. 4 (Nomen prseoccu- 

 patum.) 



Xiphocaris v. Martens, Archiv f. Naturg., 38, 1, 1872, p. 139. 

 Miersia Kingsley, Proceed. Acad. Nat. Sei., Philadelphia, 1879, p. 416. 

 Xiphocaris Kingsley, Bull. Essex Instit., vol. 14, 1882, p. 127. 

 Paratya Miers, Annal. Mag. Nat. Hist. (5), IX, 1882, p. 194. 

 Xiphocaris Pocock, Annal. Mag. Nat. Hist. (6), III, 1889, p. 17. 

 Miersia Ortmann, Jenaische Denkschr., VIII, 1894, p. 8. 



a x . No supraocular spines. Rostrum longer or shorter, with an inter- 

 rupted series of teeth on the upper margin, the basal series 

 containing 9-18, the apical 3-6 teeth Lower margin of 

 rostrum with numerous (16-40) teeth X. elongata. 



subspecies (or varieties). 



b x . Rostrum longer than carapace . . . X. elongata typica (l). 5 

 6 2 . Rostrum shorter than carapace. 



Cj. Rostrum longer than the scaphocerite. 



X. elongata intermedia (1). 



c 2 . Rostrum longer than the stalk of antennulse. 



X. elongata gladiator. 



c 3 . Rostrum shorter than the stalk of antennulse. 



X. elongata brevirostris . 



a 2 . Supraocular spines present. Rostrum about as long as the 

 scaphocerites or somewhat longer. An uninterrupted series of 

 20-24 teeth on the upper, 2-4 teeth on the lower margin. 

 .X. compressa (3). 



1. Xiphocaris elongata (Guérin), 1857. 



Hippolyte elongata Guérin, Anim. Artie, in: Ramon de la Sagra, Hist, de 

 l'ile de Cuba, 1857, p. 54, pi. 2, fig. 16. 



Oplophorus americanus Saussure, Mem. Soc. Phys. Hist. Nat. Geneve, t. 14, 2, 

 1858, p. 472, pi. 4, fig. 31. 



Xiphocaris elongata (Guér. ) v. Martens, Arch. f. Naturg., 38, 1, 1S72, p. 140. 



Oplophorus elongata (Guér.) Kiugsley, Bull. Essex Instit., X, 1878, p. 68. 



Xiphocaris elongata (Guér.) Pocock, Ann. Mag. Nat. Hist. (6), III, 1889, p. 

 17 ff, pi. 2, figs. 5-8. 



Xiphocaris gladiator, var. intermedia, brevirostris Pocock, ibid. 



Oplophorus elongatus (Guér.) Sharp, Proceed. Acad. Nat. Sei., Phila- 

 delphia, 1893, p, 121. 



Geographical distribution: Fresh-waters of the Antilles. — Cuba 

 (Guérin, v. Martens); Hayti (Saussure); Dominica (Pocock); St. 

 Domingo (Sharp). 



2. Xiphocaris compressa (de Haan), 1849. 



Ephyra compressa de Haan, Faun. Japon. Crust., Dec. 6, 1849, p. 186, pi. 46, 



fig. 7. 

 Aty ephyra compressa (d. H.) v. Martens, Arch. f. Naturg., 34, 1, 1868, p. 51 ff, 



pi. 1, fig. 4. 

 Atyephyra compressa (d. H. ) Miers, Ann. Mag. Nat. Hist. (5), IX, 1882, p. 193. 



4 Non Ephyra Koux, Memoir. Salicoques, 1831, p. 24, which is identical with 

 Acanthephyra A. Milne-Edwards, and belongs to the Acanthephyridce . 



5 I put in parentheses following each species, the number of specimens I 

 have examined myself, 



