1398 THE VOYAGE OF H.M.S. CHALLENGER. 



its greatest breadth not equalling their greatest breadth ; the apex narrow, but 

 rounded. 



Length. — Some of the specimens were an inch in length, others much smaller ; some 

 were almost fully extended, others doubled up so that the tips of the uropods were just 

 under the antennae. 



Locality.- — Station 312, January 13, 1876; off Port Famine, Patagonia; lat. 

 53° 37' 30" S., long. 70° 56' 0" W.; depth, 10 to 15 fathoms; surface temperature, 47°-8. 

 More than thirty specimens. 



Remarks. — Milne-Edwards gives a very brief description of his species, which he says 

 " Habite les mers du Chili." Spence Bate described it afresh and figured it under the 

 name " Lestrigonus Gaudichaudii." He says "It closely resembles L. [Lestrigonus] 

 exulans, but may be at once recognised by the distinct armature on the propoda of the 

 gnathopoda." It has many points of resemblance also to Tauria macrocephala, Dana, 

 a mysterious species, of which Dana's description does not wholly agree with his figures, 

 see U.S. Explor. Exped., pi. lxviii. fig. 2d. According to Bovallius, Arctic and Antarctic 

 Hyperids, Spence Bate's Lestrigonxis exulans is a synonym of Montagu's Hyperia 

 galba, while Krdyer's Lestrigonus exulans is a synonym of Milne-Edwards' " Hyperia 

 Latreillei." Milne-Edwards only distinguishes Hyperia gaudichaudii from Hyperia 

 latreillii by the antennas, using characters which are now known not to be of specific 

 value, but the figures given by Bovallius of Hyperia latreillii show that it must come 

 extremely near specifically to Hyperia gaudichaudii, although the one is a northern, the 

 other a southern, form. . 



Specimens belonging to the genus Hyperia, or to one of the closely related genera, 

 were obtained at many localities, but there has not been time to examine them all ; many 

 of very small size, little or not at all over a tenth of an inch in length, have the characters 

 of adult males or females, while many are almost certainly the young of larger species ; 

 whatever their age or size they have not been neglected as uninteresting, but simply 

 because certain conditions of time and space to which this Report is subject have made 

 it desirable to pass them over. 



Genus Hyperoche, Bovallius, 1887. 



1838. Metoecus, Kr0yer, Gr0nland's Arnfipoder, p. 291. 

 1840. „ Milne-Edwards, Hist. Nat. des CrustaciSs, t. iii. p. 78. 



1852. „ Dana, Amer. Journ. Sci. and Arts, ser. 2, vol: xiv. No. 41. 



1852. „ Dana, U.S. Explor. Exped., vol. xiii. pt. ii. pp. 981, 1442. 



1862. Hyperia (pars), Spence Bate, Brit. Mus. Catal. Amph. Crust, p. 292. 



1864. „ ,, Fritz Midler, Fur Darwin (translation, p. 77). 



1865. „ „ Goes, Crust, aniph. maris Spetsb., p. 18. 



1868. „ „ Bate and Westwood, Brit. Sess. Crust., vol. ii. pp. 519, 520. 



