626 ox CRUSTACEA BROUGHT BY DR WILLEY FROM THE SOUTH SEAS. 



1S18. Coelino, Latreille, loc. cit., pi. 336, f. 28. 



1825. Anceus, Desmarest, Consid. gen. Cnist., p. 282. 



182-5. Praniza, Desmarest, loc. cit., p. 283. 



1829. Anceus, Latreille, Regne Animal, nouv. ed., vol. 4, p. 125. 



1829. Praniza, Latreille, loc. cit., p. 125. 



1840. Praniza, Milne- Edwards, Hist. Nat. Crust., vol. 3, p. 192. 



1840. Anceus, Milne-Edwards, loc. cit., p. 196. 



1849 Anceus, Lucas, Explor. sci. de I'Algerie, p. 85. 



1849. Praniza, Lucas, loc. cit., p. 87. 



1855. Anceus, Hesse, Comptes rendus, Novembre 26. 



1858. Ancetis, Hesse, Comptes rendus. Mars. 



1858. Anceus, Bate, Ann. Nat. Hist., Ser. 3, vol. 2, p. 165. 



1858. Praniza, Bate, loc. cit. 



1861. Anceus, P. J. van Beneden, Faime litt. de Belgique, p. 102. 



1866. Anceus, Bate and Westwood, Brit. Sess. Crust, vol. 2, pt. 15, p. 170. 



1870. Praniza {Anceus), Dohru, Untersuch. Bau und Entwicklung der Ai-thropoden, 

 pt. 1, p. 65. 



1874. A7icaeus, Hesse, Ann. Sci. Nat., Ser. 5, vol. 19, Art. 8, p. 8. 



1880. Gnathin, Harger, U. S. Comm. Fish and Fisheries, pt. 6, p. 410. 



1880. Anceus, Kossmann, Raise in die Klistengebiete des Rothen Meeres, Malacostraca, 

 p. 105. 



1884. Anceus, Hesse, Ann. Sci. Nat, Ser. 6, vol. 17, Art. 6, p. 1. 



1885. Anceus, Sars, Den Norske Nordhavs Exp., Crust., vol. 14, pt. 1, p. 85. 



1886. Anceus, Beddard, Challenger Reports, vol. 17, Isopoda, p. 135. 

 1893. Gnathia, Stebbing, History of Crustacea, p. 337. 



1897. Gnathia, Sars, Crustacea of Norway, vol. 2, pt. 3, p. 51. 



Various other references to the voluminous literature vnW be found in Bate and 

 Westwood's work. Leach in 1813 placed the family which he instituted for this 

 single genus between the ' Squillarii ' and the ' Gammarini.' 



It was this probably that induced Latreille in 1829 to neglect the guidance of 

 Desmarest and to place the genus, not near the Amphipoda, but actually among them. 

 Risso in 1816 had taken the still more remarkable step of placing it in his family 

 ' Paguriens ' between Hippa and Parjurus, and was rewarded for his absurdit}' by a 

 prolonged upholding of his name Anceus over the earlier given Gnathia. Upon Leach 

 has been saddled the synonym Praniza, which he not only never published but prob- 

 ably never wished to publi.sh. It was given to the world in a haphazard manner 

 by Latreille in the great Atlas to the Encyclopedic Methodique, in which Slabber's 

 figure of Oniscus marinus is copied and stated to belong to Dr Leach's genus Praniza. 

 For the date of 1769 at which Slabber's original figure appears to have been published, 

 it must be considered a highly creditable production, and that it belongs to what is 

 often called the Praniza-iovro. of the genus Gnathia is beyond question. 



In this genus the absence of the fifth peraeopods is not limited to the young, 

 but extends to the adults of both sexes. 



