OF THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 259 



appears to be membranous, the first joint scarcely distinct from the second, the 

 third joint carrying two or three setae. In the third maxillipeds the inner margin 

 of the third joint is finely but irregularly denticulate, the surface tubercles not closely 

 set. The eggs of a small female are numerous, not very small. 



Locality.— Gough Island, lat. 40° 20' S., long. 9° 56' 30" W. ; depths 75 and 100 

 fathoms ; April 21-23 and 24, 1904. 



The extraordinary distribution of this species has been noted by several authors, 

 extending as it does from the Faroes to the West Indies, the Cape of Good Hope, 

 Australia, and the Indian Ocean, with depths varying from 106 m. to 1326 m. Fuller 

 details are given by Milne-Edwards and Botjvier, and by Doflein. 



Gen. Coryrhynchus, Kingsley. 



1860. Podonema (preocc), Stimpson, Ann. Lyceum N.H. New York, vol. vii. p. 19. 

 1870. „ Stimpson, Bull. Mus. Comp. Zool., vol. ii. p. 126. 



1879. Podochela (part), A. Milne-Edwards, Miss. Sci. Mexique, "Crust.," part v. p. 189. 



1879. Podonema, Miers, J. Linn. Soc. London, vol. xiv. No. 79, p. 643. 



1879. Coryrhynchus, Kingsley, Pr. Ac. Sci. Philad., p. 384. 

 1886. ,, (subgen.), Miers, Rep. Voy. " Challenger" vol. xvii. part xlix. p. 11. 



1900. ,, (subgen.), Young, West Indian Stalk-eyed Crust., p. 13. 



1901. Podochela (part), Rathbun, Bull. U.S. Fish. Comm.for 1900, vol. ii. p. 53. 



The peculiarity of an almost circular rostrum in species which otherwise clearly 

 belong to the Oxyrrhyncha or sharply rostrate crabs may be taken to justify the 

 separation of the genus from its near ally Podochela. 



Coryrhynchus algicola, n. sp. 

 Plate XXIII. 

 This new species is approximate to C. riisei (Stimpson), 1860, and C. spatulifrons 

 (A. Milne-Edwards), 1879. It agrees with the latter in the short broad form of the 

 rostrum, the former being distinguished from both by having the rostrum longer 

 and narrower. On the other hand, the more pronounced angles of the distally 

 widened fourth joint in the third maxillipeds here agree with C. riisei, and not with 

 C. spatulifrons. In both of those species the fingers of the chelipeds are described 

 by the French author as finely denticulate, and he figures those of his own species 

 to correspond with that statement. The new species has the edges of these fingers 

 not dentate but crenulate, the alternate projections of one finger neatly fitting the 

 hollows of the other. Here also a pair of tubercles occur on the surface of the 

 carapace between the eyes, which would seem to be absent from the other species 

 under comparison. It may be judged from the copious supply of hooked and other 

 setae with which the whole exposed surface is furnished in all three species, that 

 all adopt similar methods of concealment. The Scotia specimen was a mere garden 

 of seaweed, and the limbs were far more ready to leave the body than either body 

 or limbs were to part with the investing weeds. The pellucid rostrum looked like 

 a bit of weed, and one of the long second pereeopods was so thickly matted that it 



