ME. E. J. MIEBS'S REVISION OF THE HIPPIDEA. 327 



a spine at its antero- external angle ; flagellum with the joints 

 diminishing successively in size. Antennules very long, exceeding 

 the body in length ; the flagellum multiarticulate, and fringed 

 with long hairs on its upper and inner margin. Anterior legs 

 with the hand very short, and high in proportion to its length, 

 with short interrupted and setose ridges on its outer surface ; 

 its anterior margin straight, with a short spine at the antero- 

 inferior angle ; finger arcuate, acute. Terminal joint of second 

 pair of legs strongly falcate, the distal half rather sharply 

 bent ; that of the third pair slender, arcuate, with a prominent and 

 narroio lobe near its proximal end ; that of the fourth pair broad, 

 slightly falcate, and acute at its distal extremity. Terminal 

 joint of the postabdomen longer than broad, spatulate, ovate, not 

 narrowed and produced at its distal extremity. Length of cara- 

 pace about 1 inch. 



Hah. India, Pondicherry {Coll. Brit. Mus.) ; seas of Asia (Coll. 

 Mus. Paris) ; East Indies, Amboina {Kerhst) ; Nicobars, Madras 

 {Keller). 



Alhunea symnista, Fabr., is mentioned by Brulle in his list of 

 the Crustacea inhabiting the Canaries, given in Webb and Ber- 

 thelot's Hist. Nat. des iles Canaries, ii. Zool. Crust, p. 17 ; but 

 this may prove on comparison to be one of the species inhabiting 

 the Mediterranean or Eastern American coast. 



In the males of this species the terminal segment is notched at 

 its base, where it is articulated with the penultimate, and attains 

 its greatest width near its broadly rounded distal extremity, 

 toward which it is suddenly narrowed. In the females this 

 segment is narrow-ovate (see Lucas, Eev. et Mag. Zool. v. p. 47, 

 pi. i. fig. 8, a, b). 



The form of the eye-peduncles, with the number of teeth on 

 the anterior margin of the carapace, and the form of the terminal 

 joint of the third pair of legs, suflS.ce to distinguish A. symnista 

 from its congeners. 



Albunea gueeinii*. 



Albuuea symnista, Lucas, Crust, in Explor. Algerie, p. 27, pi. iii. fig. 2 

 (1849); Heller, Crust, sudl. Europa, p. 153 (1863). 



* It is possible that this is the species described by Linnseus (Syst. Nat. 

 p. 1052) from the Mediterranean, under the name of Cancer carabus. By 

 " Bostrum dentibits 2 parallelis mobilibus depressis," the eye-peduncles may be 

 meant. The remainder of the description would apply fairly well to a species 

 of the genus Albunea. 



LINN. JOURN. — ZOOLOaV, VOL. XIV. 24 



