330 REV. T. R. R. STEBBING ON CRUSTACEA 



1876. Merjalopa Claus, Untersiicb, ties Crustaceen-Systems, pp. G6 



etc. 

 1911. Megalops Williamson, Fisheries, Scotland, Sci. Invest. 



1909, pp. 4, 8, 11, 13, 15. 

 1918. Megahpa Meek, Hep. Dove Marine Lab. p. 30. 

 1918. Meyalops Olga Jorgensen, Rep. Dove Marine Lab. p. 61. 



Various other references will be found indicated in the works 

 above cited. In 1769 or 1770 Slabber, in his ' Natuurkundige 

 Verlnstigingen,' Part 18, p. 159, pi. 18. fig. 1, describes and 

 figures " an oblong-quadrate sea-crab," the size of a grain of 

 wheat, which is no doubt a Megalopa, but Slabber supplies no 

 Latin name. In 1783 Herbst in allusion to its size named it 

 Cancer granarms (Natui-g, Krabben und Krebse, Parts 2-5, 

 p. 107, pi. 2. figs. 28 a, A.). His reproduction of Slabber's figure 

 is not specially accurate. Later on, in the third volume of 0. F. 

 Midler's ' Zoologia Danica,' edited by Abildgaard (p. 56, pi. 114. 

 figs, 1-3 ; 1789) appears Cancer faeroensis, also with a tridentate 

 front, and recognised by Milne Edwards (loc. cit. p. 262) as a 

 Megalopa. In 1804 Montagu described and figured his Cancer 

 rhomhoidalis (Tr. Linn. Soc. vol. vii. p. 65, pi. 6. fig. 1), a species 

 apparently belonging to the Cyclometopa, and on this Leach in 

 1813 founded his genus Megalopa, renaming Montagu s species 

 as Megalo2)a montagui (Malac. Pod. Brit. pt. 14, pi. 16. figs. 1-6 ; 

 1817). 



The Megalopa of Cancer irroratus Say has been carefully 

 ascertained by S. I. Smith, and as the adult is clearly allied with 

 Cancer 2'>agurns, presumably the Megalo]m stage will be nearly 

 the same in the two species. The Megalopa of Carcinus tiuenas 

 figured by Spence Bate is reproduced in Huxley's 'The Ciay- 

 fish' (p. 282, figs. 74, C, D. ed. 3; 1881) by a slip under the 

 name of C. pagurus. Williamson, who uses Megalopa as the 

 plural of Megalojys, supplies figures of this stage for Portunvs 

 holsatus, Portunus piiber, and a species Avhich he believes to be 

 Hyas araneus. As our Falkland Island specimen shows good 

 agreement with the last-named form it may reasonably be allotted 

 along with it to the Oxyrrhyncha, leaving open the question of 

 its genus and species. 



MACRURA ANOMALA. 

 Tribe GALATHEIDEA. 



Family Galatueid^. 

 Genus Munida Leach, 1820. 

 MuNiDA gregarius (Fabricius), 1793. 



The adult form has been already mentioned in these Proceedings 

 for 1914, p. 346. The figures here given refer to a very early 



r4i 



