1358 THE VOYAGE OF H.M.S. CHALLENGER. 



on the other hand, young ones from the specimen taken at Station 232 showed the 

 dactyloptera well developed, the fourth joint of the third peraeopods considerably 

 longer than the distal breadth, and the distal margin divided as in Phronima atlantica, 

 Guerin, PI. CLX., fig. prp.3, $ ; but then these specimens proved to be a little more 

 than a tenth of an inch long, and when one was examined that was not more than 

 a tenth of an inch, the distal margin of the fourth joint of the third peraeopods was 

 found to be armed only with a minute front tooth, just as in the specimens taken 

 at a distance of 83° to the south. To give a full account of the Challenger specimens 

 would demand a treatise by itself. It may be of interest, here, without the treatise, 

 to mention the various localities at which specimens of the genus were obtained, 

 whatever the species may be to which they respectively belong. 



Station 103, August 22, 1873; off Sierra Leone; lat 2° 52' N., long. 17° 0' W. 

 (Phronima pacifica, see p. 1348). 



Station 106, August 25, 1873 ; east of St. Paul's Rocks ; lat. 1° 47' N., long. 24° 26' 

 W.; surface to 40 fathoms ; surface temperature, 78°'8. Two specimens, female. 



September 29, off Rio Janeiro ; lat. 19° 6' S., long. 35° 40' W.; surface, night ; 

 surface temperature, 74° - 7. One specimen. 



Station 130, October 3, 1873; south-east of Rio Janeiro; lat. 26°15' S., long. 32° 56' W; 

 surface temperature, 69°. 



Station 131, October 6, 1873 ; South Atlantic ; lat. 29° 35' S., long 28° 9' W.; surface 

 temperature, 65°. One male specimen, mounted in Canada balsam. Length, seven- 

 twentieths of an inch. Flagellum of the upper antennae with very long first joint, followed 

 by six small joints ; flagellum of lower antennae with twelve long slender joints ; of the second 

 uropods the inner ramus almost as long as the outer. The third perasopods have the 

 square form of wrist, with the hand projecting but little beyond it {? Phronima pacifica). 



Station 132, October 10, 1873 ; South Atlantic ; lat, 35° 25' S., long. 23° 40' W.; 

 surface temperature, 58°. One male specimen, mounted in Canada balsam. Length, 

 half an inch. The antennae and uropods nearly as in the specimen from Station 131; 

 the third peraeopods with the wrist longer than broad, like that figured for the female 

 of Phronima atlantica on PL CLX., the hand projecting much beyond the wrist. 



Station 158, March 7, 1874 ; in the Southern Ocean ; lat. 50° 1' S., long. 123° 4'E.; 

 depth, 1800 fathoms; bottom temperature, 33° - 5 ; surface temperature, 45°. One 

 specimen, an inch long, female, with eggs (f Phronima novse-zealandix, see p. 1356). 

 A Phronima-house. 



March 9 and 10, 1874; south of Australia; lat. 48° 18' S., long. 130° 4' E.; 

 surface ; surface temperature, 50°. One large specimen, female, in its house, with 

 numerous young. One empty P/«wu'ma-house. 



Station 159, March 10, 1874 ; south of Australia ; lat. 47° 25' S., long. 130° 22' E.; 

 surface temperature, 51°-5. 



