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



Birgus latro (Linne). 



Cancer crementatus, Eumphius, D'Amboinische Eariteitkamer, p. 7, taf. iv., 1705. 

 „ „ Seba, The.sauri Eerum Natur., t. iii., tab. xxi. figs. 1, 2, 176L 



„ latro, Linne, Syst. Nat, ed. xii., t. ii. ix 1049, 1766. 



„ „ Herbst, Naturgeschichte der Krabben u. Krebse, t. ii , tab. xxiv. p. 34, 1796. 



Pagurus latro, Fabricius, Suppl. Ent. Syst., \y. 411, 1798. 

 „ „ Bosc, Hist. Nat. des Crust, t ii. p. 76, 1802. 



„ „ Latreille, Hist Nat. des Crust et Insect, t vi. p. 164, 1802. 



„ ,, Olivier, Ency. Meth., t. viii. p. 639, Atlas, pi. cclxxxii., 1811. 



„ „ Lamarck, Hist Anim. sans Vert., t. v. p. 221, 1818. 



Birgus latro. Leach, Trans. Linn. Soc. Lond., vol. xi. p. 337, 1815. 

 „ „ Quoy and Gaimard, Voy. de I'Uranie, pi. Ixsx., 1824. 



„ „ Desmarest, Consid. sur les Crust, p. 180, pi. xxx, fig. 3, 1825. 



,, „ Milne-Edwards, Hist. Nat des Crust, t ii. p. 246, 1837; in Cuvier, Eegne Anim., 



ed. 3e, Crust., pi. xliii. fig. 1, no date. 

 „ De Haan, Crust Japon., p. 212, 1850. 

 „ „ Dana, U.S. Explor. Exped., vol. xiii., Crust, part i. p. 474, pi. xxx. fig. 5, 1852. 



„ „ Hilgendorf, in Van der Decken's Eeisen in Ost-Afrika, Crust., p. 100, 1869. 



„ „ Brocchi, Ann. d. Sci. Nat, sdr. 6, t ii. p. 34, pL xv. fig. 44, 1875. 



„ „ Wniemoes Suhm, Zeitschr. f. wiss. Zool., Bd. xxvi. p. 73, 1875. 



„ „ Grube, Jahresb. Schles. Ges., p. 76, 1878. 



,, „ Semper, Zeitschr. f. wiss. Zool., Bd. xxx. p. 282, 1878. 



„ Miers, Crust in Zool. H.M.S. "Alert," p. 555, 1884. 

 Juv. Birgus latieauda, Latreille, Eegne Anim., 6d. 2e, t. iv., pi. xii. fig. 2, 1829. 

 ,, ,, Desmarest, Consid. sur les Crust, p. 180, 182.5. 



Habitat. — Philippine Islands. Several large specimens of both sexes. 

 Ternate, October 15, 1874 ; a young female. 



Birgus latro is the largest and one of the most widely distributed of Indo-Pacific 

 Pagurids. 



Genus Ccenohita, Latreille. 



Cenobita, Latreille, Fam. Nat. du Eegne Anim., p. 276, 1826. 

 Ccenobita, Latreille, Cuvier, Eegne Anim., ed. 2e, t. iv. p. 77, 1829. 

 Cenobita, Milne-Edwards, Hist. Nat. des Crust., t. ii. p. 238, 1837. 



„ De Haan, Crust Japon., p. 203, 1850. 



,, Dana, U.S. Explor. Exped., vol. xiii.. Crust, part. i. p. 435, 1852. 



,, Stimpson, Proc. Acad. Nat. Sci. Philad., p. 70, 1858. 



„ Haswell, Catal. Austral. Crust, p. 160, 1882. 



Comobita, Hilgendorf, in Van der Decken's Eeisen in Ost-Afrika, Crust., p. 97, 1869. 



Carapace elongated, the rostrum Ijut slightly marked. Ocular peduncles compressed. 

 Chelipedes markedly unequal, the left larger. Abdomen soft and membranous, twisted 

 on itself. First five abdominal segments with narrow tergal plates, the sixth with a well- 

 developed pair of appendages (of which the left is larger), followed by a well-marked 

 telson. The species protect themselves by means of shells. 



