330 REV. T. K. R. STEHBIXfi ON C'llUSTACiJOA 



187G. Megalopa Cla,us, XJntersucli. ties Crustaceen-Systems, pp. 66 



etc. 

 1911. Megalojys Williamson, Fisheries, 8cot]ancl, Sci, IiiA'est. 



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

 1918. Megalopa Meek, Rep. Dove Marine Lab. p. 30. 

 1918. MegaloiJS 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 ' Xatiiurkundige 

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

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

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

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

 Cancer granarivs (Naturg. Krabben nnd 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 O. F. 

 Miiller'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 figxu^ed his Cancer 

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

 apparently belonging to tlie Cyclometopa, and on this Leach in 

 1813 founded his genus j\[egalopa, renaming Montagu's species 

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

 1817). 



The Megalopa of Cancer irroratns Say has been carefully 

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

 Cancer paguriis, presumably the Megalopa, stage Avill be nearly 

 the same in the two species. The Megalopa of Cai'civns mcevas 

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

 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 Megalops, snpplies figiu'es of this stage for Poriunns 

 holsatus, Portmius 2)tihcr, {\nd a species which he believes to be 

 Ilyas araneus. As our Falkland Island specimen shows good 

 agreement with the last named form it may reasonabh^ be allotted 

 along with it to the Oxyri^hyncha, leaving open the question cif 

 its genus and sjjecies. 



MACRURA ANOMALA. 

 Tribe GALATHEIDEA. 



Family Galatheid.e. 

 O^enus INIuxiDA Leach, 1820. 

 MuNiDA GREGARins (Fabricius), 1793. 



The adult form has been already mentioned in these Proccedii.gs 

 for 1914, p. 346. The figiu-es here given I'efer to a very early 



