REPORT ON THE AMPHIPODA. 1307 



the fourth three-quarters of an inch, the fifth just under two-fifths of an inch 

 long. The relative proportions may be represented by the numbers 66, 74, 73, 90, 48. 

 In the first pair the branchial vesicles and marsupial plates are larger than in the 

 second gnathopods ; in the second pair the branchial vesicles are larger, the marsupial 

 plates smaller than in the preceding pair, the vesicles as long as the first joint of 

 the limb, the plates longer ; in the third pair the branchial vesicles are longer and the 

 marsupial plates shorter than the first joint of the limb, the marsupial plates in all the 

 pairs being fringed with setse. 



Pleopods. — Peduncles of the first pair as usual longer than those of the third pair ; 

 the inner ramus of the first pair with seventeen joints, outer with twenty -two ; inner 

 ramus of the third pair with nineteen joints, outer with twenty-three. First joint of 

 the inner ramus of the first pair with nine feathered setae below the cleft spine, of the 

 third pair with seven such setae ; the first joint of the outer ramus in the third pair 

 having fifteen plumose setse along its outer margin. 



Uropods scarcely differing from those of Lanceola pacifica. 



Telson in general appearance like that of Lanceola pacifica, a very little longer 

 than the peduncles of the third uropods, and having the lower part of the lateral 

 margins and the apex not minutely pectinate as in the species just mentioned, but by 

 comparison boldly serrate with teeth, of which some are bifid. 



Length, about one inch, the antennae not included. 



Locality. — Station 334, March 14, 1876; lat. 35° 45' S., long. 18° 31' W.; 

 1915 fathoms. Trawled. One specimen, female. 



Remarks. — Had no other species been described than Lanceola pelagica, Say, 

 from the Gulf Stream, there could have been no difficulty in assigning that name to 

 the present form, but the locality is more suggestive of Lanceola felina, Bovallius, 

 from Tristan da Cunha ; in that species, however, the telson appears to be shorter than 

 the peduncles of the third uropods. From Lanceola sayana, Bovallius, an Atlantic 

 species, as well as from the Pacific species, Lanceola, pacifica, it is separated to all 

 appearance only by minute differences. 



Lanceola sp. 



Length a little over half an inch. 



Locality. — Station 297, November 11, 1875, South Pacific; lat. 37° 29' S., long. 

 83° 7' W.; depth, 1775 fathoms ; bottom, Globigerina ooze ; bottom temperature, 35 0- 5 ; 

 surface temperature, 57°. Tow-net at trawl. One specimen. 



Remarks. — This specimen was mounted in a cell on the voyage, apparently in 



