618 ON CRUSTACEA BROUGHT BY DR WILLEY FROM THE SOUTH SEAS. 



liwnus. One specimen wa.s observed with four-jointed inner ramus on one side, and a 

 five-jointed one on the other. 



Length reaching .5 mm. or a little over; many specimens much shorter, one with 

 well-developed marsupium being only 3'.5 mm. long. 



Habitat. Isle of Pines : labelled as ' Tanaids from sponges.' 



Fam. Anthuridae. 



1814. Aiitliiiridae, Leach, Edinb. Encycl., vol. 7, p. 433. 



1819. Anthuradae, Leach, in Samouelle's Entomologist's Useful Compendium, p. 107. 



1852. Anthurinae (subfam. of Arcturidae), Dana, Amer. Joum. Sci. and Arts, Ser. i, 



vol. 14, p. 306. 



1864. Anthuridae, Lilljeborg, Bidrag Sverige och Norrige Isopod. underord. och 

 Tanaid. fem., p. 6. 



1866. Anthundae, Bate and Westwood, British Sessile-eyed Crustacea, vol. 2, p. 155. 



1880. Anthuridae, Harger, Rep. U. S. Commission Fish and Fisheries, pt. 6 for 1878, 

 pp. 304, 396. 



1882. Anthuridae, Sars, Forh. Selsk. Christian., No. 18, p. 15. 



1882. Anthurinae (subfam, of Arcturidae), Haswell, Catal. Australian Malacostraca, 

 p. 304. 



1884. Anthuridae, Haswell, Pr. Linn. Soc. N. S. Wales, vol. 9, pt. 3, and vol. 9, 

 pt. 4. 



1886. Anthuridae, Norman and Stebbing, Trans. Zool. Soc. London, vol. 12, pt. 4, 

 p. 119. 



1886. Anthuridae, Beddard, Challenger Reports, vol. 17, Isopoda, p. 143. 



1893. Anthundae, Stebbing, History of Crustacea, Internat. Sci. Ser., vol. 74, 

 p. 330. 



1894. Anthuridae, Chilton, Trans. Liim. Soc. London, vol. 6, pt. 2, p. 209. 



1895. Anthuridae, H. J. Hansen, Isup. Cum. u. Stomat. der Plankton-Exp., p. 11. 

 1897. Anthuridae, Sars, Crustacea of Norway, vol. 2, p. 43. 



1900. Anthuridae, H. Richardson, The American Naturalist, vol. 34, p. 215. 



In his article " Crustaceology " Leach first of all placed his new genus Anthura 

 among the Myriapoda (p. 404), but in the supplement to that article he transfers the 

 family Asellides to the Malacostraca, calling it a tribe, in which the first family is the 

 Anthuridae (p. 433). For a long time this family did not find acceptance with other 

 writers, and Lilljeborg in 1864 supposed that he was himself establishing it for the 

 first time. Milne-Edwards in 1840 combined in a family Idot^ides the genera Arcturus, 

 Idotea and Anthura, which are now distributed over three families, the Anthuridae 

 being placed by Sars in the tribe Flabellifera, while the Astacillidae and Idoteidae 

 stand together in the tribe Valvifera. Besides the authors named in the synonymy 

 there are two who do not happen to have used the Latin name of the femily, but 

 who have made important studies for its elucidation, Anton Dohrn in his ' Unter- 

 suchungen iiber Bau und Entwicklung der Arthropoden,' chapter 5, p. 91, 1870, and 



