NEW SPECIES OF AMPHIPODA. 193 



the spine-row contains about six strong spines; the molar is well developed; 

 the palp very slender, with its second joint much longer than either the first 

 or third, which are subequal one to the other, the third carrying a few long 

 setse. The first maxillse have a slight inner plate with two apical setse, the 

 outer plate armed with nine spines; the palp with large second joint armed 

 on its broad apex with six teeth and a spine in one member, and with six 

 spines in the other member o£ the pair, a difference which has been noticed 

 in the family Atylidse (see Das Tierreich, Amph. Gramm. p. 334). The 

 second maxillse have the inner plate shorter and much narrower than the 

 outer, in both the setse are confined to the distal margin. The maxillipeds 

 have the inner and outer plates normal, the outer with about ten fringing 

 spines, of which those on the inner edge are dentiform. The second joint of 

 the palp is the longest, but it does not reach the end of the outer plate. 



The first and second gnathopods are similar in structure, slender, setose ; 

 the fifth and sixth joints longer in the second pair than in the first, which 

 has the hand distall}' rather more widened with a less oblique palm. The 

 five pairs of perseopods are all much alike, with the second joint slender, the 

 fingers long and curved, the fourth joint longer than the fifth in the first 

 two pairs, but shorter than it in the three following pairs. 



The first nropods have the peduncle long and the rami long, the outer 

 longer than the inner. The second pair have the peduncle longer than the 

 rami, of which the outer is the shorter. In the third pair the peduncle is 

 very short, the rami long, the inner the shorter. The telson is short, little 

 longer than broad, emarginate almost to the centre, each acute apex carrying 

 a long upstanding seta. The specimen as preserved is colourless. 



Length from apex of rostrum to end of telson, between 5 and 6 mm. 



Locality. Lat. 59° 41' N., long. 3° 0' W., from a depth of 850 m. 



The specific name is derived from the Greek word xp^<^o6rj pa^, meaning a 

 searcher for gold, in allusion to the name of the vessel, the Goldseeker, 

 which was instrumental in bringing the typical specimen to light. 



Family EusiEiD.E. 



1888. Utisiridcs, Stebbing, ' Cballenger ' Ampbipoda, Keports, vol. xxix. p, 953. 



1893. Eusividce, Sars, Crustacea of Norway, vol. i. p. 414. 



1906. Eusiridce, Stebbing, Das Tierreicb, Amph. Gamtn., Lieferung 21, pp. 338, 72S. 



The definition of the family given under the last reference includes the 

 character that the mandibles have the third joint of the palp elongate. The 

 new species here added to the family is in this respect exceptional, so that 

 the statement must now be that the third joint in question is generally 

 elongate. 



16* 



