CRUSTACEA FROM THE FALKLAND ISLANDS. 35.*' 



Gen. AsTACiLLA Conliner. 



179r). AstaciUa Cordiner, Remarkable Rivers, and Nat. Hist., 



Section " AstacilU^.'" 

 1905. ,, Stebbins?, Herdman's Pearl Fish. Rep., Suppl. 



Rep. 23, p. 46. 



ASTACILLA FALCLANDICUS Ohlin. 



1901. Astac'dla faldaiulica Ohlin, Svenska Exp. MagellansUind. 

 vol. ii. p. 26G, pi. 20. fig. 1. 

 I have very little doubt that Oldin's Astac'dla mageUanicus is 

 a synonym of this species. Mr. Yallentin's specimens were 

 obtained in the Falklands from hulks at low water. The first 

 antennie have a few filaments in an apical group. The first 

 pera3on segment is completely coalesced with the head, and the 

 rather compact little first gnathopods are so attached that they 

 can scarcely have any function but that of mouth-organs. The 

 slender second gnathopods and first two pairs of perjeopods have 

 the natatoiy setfe not at all densely crowded ; they have a minute 

 hooked spine as representative of the seventh joint. The hind 

 perfeopods are robustly uncinate. The length of the body is 

 between 4 and 5 mm. 



Fam. Idoteid^. 



1852. Idofeirhf Dana, Amer. Jonrn. Sci. ser. 2, vol. xiv. p. 300. 

 1911. „ Tattersall, Nordisches Plankton, vol. iii. p. 216. 



Gen. Edotia Guerin-Meneville. 



1843. Edotia Guerin-Moneville, Icon. Regne Animal, p. 34. 

 1901. Edotia Ohlin, Svenska Exp. Magellansland. vol. ii. p. 292. 



Edotia tuberculatus Guerin-Meneville. 



1843. Edotia tiiherculata Guerin-Meneville, Icon. Regne Animal, 



p. 34. 

 1901. „ „ Ohlin, Svenska Exp. Magellanslaud. 



vol. ii. p 292, pi. 23. figs. 10, 10a-c, etc. 



The synonymy, characters, and distribution of this species are 



well discussed by the late Dr. Axel Ohlin. More recently it is 



noted ))y Ortmann and Hodgson. Mr. Vallentin took specimens 



in Roy Cove, from a depth of between 3 and 4 fathoms. 



Gen. Macrochiridotiiea Ohlin. 



1901. Macrocldridothca Ohlin, Svenska Exp. Magellansliind. 

 vol. ii. pp. 282, 286, 

 The great development of the first gnathopods in botli sexes 



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