1072 THE VOYAGE OF H.M.S. CHALLENGED. 



very short, yet twice as long as broad, its edges pectinate, as seems to be the case with 

 all the rami, the apex narrowed to two sharp points, between which is a little spine. 



The Telson is very short, broader than long, the sides converging to a broadly 

 rounded apex. 



Length. — The specimen, in the position figured, measured, from the rostrum to the 

 apex of the second uropods, three-twentieths of an inch. 



Locality. — Station 161, off Melbourne, April 1, 1874; depth, 33 fathoms; bottom, 

 sand. One specimen, female. 



Remark. — The specific name refers to the shortness of the telson. 



Genus Aora, KrOyer, 1845. 



1845. Aora, Kr0yer, Naturh. Tidsskr., B. 2, Bd. i. p. 335. 



1849. „ Dana, Arner. Journ. Sei. and Arts, ser. 2, vol. viii. No. 22. 



1849. Lalaria, Nicolet, Gay's Hist. fis. y pol. de Chile, Zool., t. 3. 



1852. Aora, Dana, U.S. Explor. Exped., vol. xiii. pt. ii. p. 913. 



1857. Lonchomerus, Spence Bate, Synopsis, Ann. and Mag. Nat. Hist., ser. 2, vol. xix. p. 11 (sep. copy). 



1857. ,, White, Popular History of British Crustacea, p. 180. 



1857. Lalaria, Spence Bate, Ann. and Mag. Nat. Hist., ser. 2, vol. xx.- p. 525. 



1859. Autonoe (pars), Bruzelius, Skand. Amph. Gamm., p. 23. 



1862. Aora, Spence Bate, Brit. Mus. Catal. Arnph. Crust., p. 160. 



1862. ,, Bate and Westwood, Erit. Sess. Crust., vol. i. p. 279. 



1869. „ Norman, Last Beport on Dredging among the Shetland Isles, p. 281. 



1870. ,, Boeck, Crust, amph. bor. et arct., p. 157. 

 1876. ,, Boeck, De Skand. og Arkt. Amph., p. 569. 



1878. „ Spence Bate, Crustacea in Couch's Cornish Fauna revised and added to, p. 52. 



1879. ,, G. M. Thomson, Ann. and Mag. Nat. Hist., ser. 5, vol. iv. No. 23. 



1880. Mkrodeuteropus (pars), Haswell, Proc. Linn. Soc. N.S.W., vol. iv. p. 339. 



1881. Aora, G. M. Thomson, Trans. New Zealand Inst., vol. xiii. p. 216. 



1882. ,, Chilton, Trans. New Zealand Inst., vol. xiv. p. 178. 



1884. ,, Chilton, Proc. Linn. Soc. N.S.W., vol. ix. pt. iv. p. 6 (extract). 



1885. ,, Chilton, Ann. and Mag. Nat. Hist., ser. 5, vol. xvi. p. 369. 



1886. „ Gerstaecker, Bronn's Klassen und Ordnungen, Bd. v. Abth. ii. p. 495. 



1886. ,, Thomson and Chilton, Trans. New Zealand Inst., vol. xviii. p. 147. 



1887. ,, Chevreux, Catal. Crust. Amph. inarms Bretagne, pp. 26, 33. 



For the original definition of the genus, see Note on KrOyer, 1845 (p. 211); for 

 that of Lalaria, see Note on Nicolet, 1849 (p. 231); for that of Lonchomerus, see 

 Note on Spence Bate, 1857 (p. 294), and for that of Autonoe, see Note on Bruzelius, 

 1859 (p. 312). Boeck in 1876 gives the following definition : — 



" First Gnathojwds larger than the Second ; in the male the third joint produced 

 behind into a long stiliform process ; the wrist elongate, narrow ; the hand also 

 elongate, oval ; in the female the third joint not produced at the lower hinder angle ; 

 the wrist short ; the hand broad. 



