1278 THE VOYAGE OF H.M.S. CHALLENGER. 



of fiagellum very large, compressed ; the rest of flagellum minute. Second pair filiform, 

 angulated. Mandibles with palp. Dactyli of seventh pair of pereiopoda [fifth perseopods] 

 transformed [not normal]." 



Genus Vibilia, Milne-Edwards, 1830. 



1830. Vibilia, Milne-Edwards, Ann. d. Sci. Nat., torn. xx. p. 386 (pp. 34, 35, extr.). 



1831. Dactylocera (pars), Latreillc, Cours d'Entomologie, p. 398. 



1836. Thaumalea, Templeton, Trans. Entom. Soc. Lond., vol. i. pt. iii. 



1837. Vibilia, Burmeister, Handbueh der Naturgescliichte, Abth. ii. 



1838. „ Milne-Edwards, Hist. Nat. des Anim. sans vertebres, t. v. 

 1840. „ Lucas, Hist. Nat. des Crust. Arachn. et Myriap., p. 233. 

 1840. „ Milne-Edwards, Hist. Nat. des Crust., p. 72. 



1849. ,, Lucas, Explor. Scient. de l'Algerie, Zool., p. 56. 



1850. Orattrina, de Natale, Su poclii Crost. del porto di Messina (See Appendix). 



1851. Elasmocerus (J), 1 Costa, Hope's Catalogo dei Crost. Italiani, p. 22. 



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



1852. „ Dana, U.S. Explor. Exped., vol. xiii. pt. ii. p. 980. 



1853. „ Costa, Eend. della Soc. r. Borb. 



1857. „ Costa, Bicerclie sui Crost. Amf. del regno di Napoli, p. 233. 



1858-74. „ Chenu and Desmarest, L'Encycl. d'Hist. Nat. Crust., p. 48. 



1861. „ Spence Bate, Ann. and Mag. Nat. Hist., ser. 3, vol. viii. p. 1. 



1862. „ Spence Bate, Brit. Mus. Catal. Amph. Crust., p. 299. 

 1868. „ Bate and Westwood, Brit. Sess. Crust., vol. ii. p. 524. 

 1872. „ Claus, Grundziige der Zoologie, ed. 2, p. 467 (Marion). 

 1874. ,, Marion, Ann. d. Sci. Nat., ser. 6, Zool., t. i. p. 4. 

 1878. ,, Claus, Zool. Anzeiger, Jahrgang i. No. 12, p. 269. 

 1880. ,, Claus, Grundziige der Zoologie, Auflage 4, Bd. i. 



1885. ,, Carus, Prodromus Faunae Mediterranean, pars ii. p. 421. 



1886. „ Gerstaecker, Bronn's Klassen und Ordnungen, Bd. v. Abth. ii. p. 492. 



1887. „ Bovallius, Systematical List of Amph. Hyper., Bihang till K. Svensk. Vetensk. 



Akad. Handl., Bd. 11, No. 16, p. 6. 

 1887. „ Bovallius, Arctic and Antarctic Hyperids, Vega-Exp., Bd. iv. p. 554. 



For the original definition of the genus, see Note on Milne-Edwards, 1830 (p. 142). 

 The account of Dactylocera given by Latreille in 1831 (see p. 144) is of no importance. 

 For TJiaumalea, see the description of the species Thaumalea clepilis, in Note on 

 Templeton, 1836 (p. 167). Bovallius in 1887, gives the following definition of 

 Vibilia : — 



" Head small, almost quadrangular. Eyes small, ovate or bean-shaped. First pair 

 of pereiopoda [gnathopods] simple, not chelate, second pair with a more or less produced 

 carpal process. Femur of seventh pair [first joint of fifth perseopods] shorter [than] or 

 as long as the following joints together. Telson broad, well developed." 



1 Costa does not describe the genus, but shice its name means — with expanded antennse — and since Costa sub- 

 sequently named a species Vibilia speciosa, and does not again mention Elasmocerus, it may be presumed that he had 

 discovered that his Elasmocerus speciosus was a Vibilia. 



