FROM THE FALKLAND ISLANDS. 329 



Faiu ily P o ii x u n i D .K. 



Larval (lenus Zuea Bosc. (PI. 11.) 



1769. Jlonocalus Slabber, Xatuurkuiidige Vevlustigingen, part 5, 



p. 35, pi. 5. figs. 1, 2. 

 1802. Zoea Bosc, Hist. Nat. Crust, vol. ii. p. 135. 

 1813. Zoe Leach, Ediiib. Encycl. vol, vii. p. 389. 

 1818. Zoca Leacli, in Tuckej's River Zaire Exp., Appendix 4, 



p. 4U. 

 1830. Zoea Tiionipson, Zoological Researches, vol. i. [Milue 



Edwards"]. 

 1837. ,, Milne Edwards, Hist. Nat. Crust, vol. ii. pp. 431-438. 

 1878. Zoca Claus, Untersuch. des Crustaceen-Systeins. pp. 1, 31, 



63, etc. 

 1903 ., Williamson, Fishery Board Scotland, Rep. xix. pt. 3, 



p. 136. 

 1911. ,, A^'illiamson, Fisheries, Scotland, Sci. Livest. 1901, 



No. 1. 

 1918. Zoea Meek & 0. Jorgensen, Rep. Dove Marine Lab. 

 pp. 23, 62. 



Slabber's description and figure of his Moiioculns taurus seem 

 to give him priority in the observation of this form of crustacean 

 life. By his laudable anxiety not needlessly to increase the 

 number of genera he has lost the credit, such as it is, of giving 

 it its first generic title. Yet he recognised the absurdity of 

 including in the definition of 2Ionocidus " oculi duo," whether 

 expressed or iuqjlied in the plural " oculi approximati." It may 

 be noticed that Leach gives a very uninstructive figure of his 

 Zo'da clavata. The account by Milne Edwards of fluctuating 

 opinion down to 1837 is of great interest, as is that by Claus 

 later on. Professor Meek proposes that the term Zoea should 

 be limited to the lai-vte which have "' more than eight but not 

 more than thirteen pairs of appendages.'' The specimen which 

 I have figured from the Falklands shows much likeness to that 

 I'epresented by Claus (loc. cit, pi. xi.) as the Zoea of some member 

 ■of the famil}^ Poi-tunidje. 



Tribe OXYRRHYNCHA. 



Larval Genus Megalopa Leach. (PI. III.) 



1813. J/egalopa Leach, Edinb. Encycl. vol. vii. pp. 394, 431. 

 1816. „ „ Encycl. Brit., Suppl., Ed. 5, p. 417. 



1818. ,, ,, in Tuckey's River Zaire Exp., Appendix 4, 



p. 414. 

 1825. ,. Desniciiest, Consid. gen. Crust, p. 200. 



1837. Meyalops Milne Edwards, Hist. Nat. Crust, vol. ii. p. 260. 

 1874. ,, S. I. Smith, Invert. Vineyard Sound, p. 237 (531), 



1)1. 8. fio'. 38. 



