REPORT ON THE AMPHIPODA. 1251 



The attachment is very near the proximal end of the segment, the first joint subequal in 

 length to the hand, little widened distally ; the second joint little longer than wide ; the 

 third joint slightly longer than the second, with a rather broad, flat, distal margin, having 

 a cilium near its hinder apex ; the wrist very small, triangular, shorter than the third 

 joint, with only the front margin free ; the hand large, twice as long as its greatest 

 breadth, the position of the hind margin entirely occupied by the palm, which is defined 

 by a slightly projecting point, within which a palmar spine is planted ; the palm border 

 is smooth except for a tooth below the centre pointing towards the hinge ; there are 

 setae or setules at various points on either side of the edge of the palm ; the finger 

 matches the palm, and is therefore long ; it is also broad, except at the acute tip, thin- 

 edged, and smooth, except for a few microscopic hairs or cilia ; the dorsal cilium is not 

 very close to the hinge. 



First and Second Perseopods wanting. The branchial vesicles small, oval, closely 

 attached to their respective segments a little behind the centre. 



Third, Fourth, and Fifth Perseopods all missing from the specimen, with the ex- 

 ception of the rudimentary side-plates and the broken hinges. The place of attachment 

 in each case is at the distal end of the segment. In the lateral view of the pleon, fig. PL, 

 the letters prp. b refer to the place of attachment of the missing fifth perseopods. 



Uropods missing. On the ventral side of the very minute pleon there is a cilium. 

 There is an appearance of a very small second joint partially telescoped within the 

 broader first joint, but this I imagine to be the abdominal valve, which, according to 

 Mayer, has often been mistaken for a second joint. 



Length. — The specimen, in the position figured, measured without the antennas about 

 one-seventh of an inch. 



Locality. — Station 135c, off Nightingale Island, Tristan da Cunha, October 17, 

 1873 ; depth, 110 fathoms. One specimen. 



Remark. — The specific name refers to the place of capture. 



Genus Caprella, Lamarck, 1801. 



1801. Caprella, Lamarck, Systeme des Anim. sans vert. 



1802. Liparis, Bosc, Hist. nat. des Crust., t. i. p. 79. 

 1802. Caprella, Bosc, Hist. nat. des Crust., t. ii. p. 153. 



1802. „ Latreille, Hist. nat. des Crust, et des Insectes, vol. iii. 



1810. „ Latreille, Consid. g^n. sur l'ordre nat. des Crust., des Arachn., et des Insectes, 



p. lOt. 

 1813. „ Leach, Crustaceology, Edinburgh Encyclopaedia, vol. vii. p. 403. 



1815. „ Leach, Trans. Linn. Soc. Lond., vol. xi. pt. ii. 



1816. ,, Latreille, Nouveau Diet, d'hist. nat., vol. v. 



1816. ,, Risso, Hist. nat. des Crust, des environs de Nice, p. 129. 



1817. „ Latreille, Le Regne animal, t. iii. 



