CRUSTACEA FROM TUE FALKLAND ISLANDS. 345 



tlie pleou of the male i.s narrow in f/«//?, wide in allxitrossin, inter- 

 mediate in hassleri. Without having specimens from various 

 localities for comparison, it Avould be presumptuous for me to 

 contest Miss Rathbun's judgment on the matter. I accept the 

 name alhatrossis for the Falkland Isla,nds specimens, inasmuch 

 as they have the front faintly bilobed, the dactyli long, with a 

 curvature which may be relatively less in a. long fingei- than in a 

 short one, the carapace not very haiiy (but at the same time 

 generally smooth except in front), and the fourth joint of the 

 tliird maxilliped with the outer margin diverging slightly from 

 that of the preceding joint. ^ 



The carapace is stated to be in J .(/«?//" narrow ; width TOo 

 to 108 times length"; in A. albatronsis "width intermediate, 

 1"08 to 1'12 times length"; in hassleri "wide; width 1*16 times 

 length." In measuring Falkland Islands specin'.ens, I was certainly 

 prejudiced in favour of tlie name albairossis by finding the 

 measurements respectively, width 1-12 times length of the first 

 example and I'OS of the second. These were females laden with 

 eggs. Then a male gave width 1'15 times length, with the pleon 

 decidedly narrow. The females laden with eggs vary greatly in 

 size, one specimen measuring 13*5 mm. long, 15 mm. broad, 

 another 23 mm. long, 26 mm. broad. The right chelipeil appears 

 to be usually, but not invariably the larger. Tlie amlmlatory 

 legs have a dense fringe of hairs, but whether this leaves them 

 less hairy than those of A. gai/i is matter for comparison. 



Locality. Roy Cove, Nov. 12, 1909, and June 1(5-24, 1910. 



Tribe CATOMETOPA. 



Fam. Grapsid.e. 



1900. (rrapsidd' Alcock, J. Asiat. Soc. Bengal, vol. Ixix. pt. 2, 

 p. 283. 



Gen. Planes Bowdicii. 



1825. Planes Bowdich, Excursions in Madeira and Porto Santo, 



p. 13, fig.s. 2«, 2 6. 

 1910. Planes Stebbing, Ann. 8. Afr. INIus. vol. vi. p. 320. 



Planes minutus (Linn.). 



1758. Cancer minutas Linn. Syst. Nat, ed. 10, vol. i. p. 625. 



It is not surprising that this little wanderer has been taken by 

 Mr. Vallentin at the Falkland Islands, its distribution Ijeing veiy 

 extensive. 



MACRUEA ANOMALA. 



Tribe PAGURIDEA. 



Fam. Pac! u h i d .-e. 



Gen. Eltacjirus lirandt. 



1851. J'jHj>(((j/ir<is r>randt, Middendoi'ft"s Sibirische Reise. Zool. 

 pt. 1. p. 105. 



