NO. 5 BARNARD: AMPHIPODA 93 



From M. longicomis Sars (1895: pi. 90, fig. 2) this species differs 

 in the strongly projecting posterodistal corner of article 4 on pereopod 

 5. The female gnathopod 2 of M. tenuimana Sars (1895: pi. 91, fig. 1) 

 is more slender and the palm more oblique than in the present mate- 

 rial, but the figures of that species in Stephensen (1931) are close to 

 the material at hand. Article 2 of pereopod 4 is stouter in M. bruzelii 

 Goes (Sars 1895: pi. 92, fig. 1) then in the present specimen. The pos- 

 terior lobe of article 5 on female gnathopod 2 is much stouter and 

 longer in M. invalida Sars (1895: pi. 94, fig. 2). Article 4 of pereo- 

 pod 5 is much stouter in M. aequicornis Sars (1885: pi. 15, fig. 5). 

 Article 6 of gnathopod 1 is less tumid medially than in M. boeckii Sars 

 (1895: pi. 88). 



The specimen also bears comparison to M. layi Gurjanova (see 

 1951) but article 6 of gnathopod 1 in that species is slightly stouter. 



Metopella (?) aporpis J. L. Barnard 



Metopellaaporpis]. L. Barnard 1962c: 142-145, figs. 12, 13. 



Canyon material: 6805(3). 



Remarks: Further study of the mandible of this species reveals no 

 small basal article on the palp, hence the single long article (similar to 

 Mesostenothoides pirloti Gurjanova 1951: 466, fig. 305A) indicates 

 that this species should be assigned to Metopelloides; but its first gnath- 

 opod bears no similarity to other species of that genus which have ar- 

 ticle 5 much shorter than 6 (except tu^o species having very short 

 gnathopod 1, in one case with a palm). Since the present species is dis- 

 tinct from any known species of Metopelloides, I prefer to retain it 

 temporarily in Metopella until a more thorough study is made of the 

 classificatory value of mandibles and maxillae in this family. 



Proboloides txinda J. L. Barnard 



(Fig. 44) 

 Proboloides tunda J. L. Barnard 1962c: 147-149. fig. 16. 



Canyon material : 7041(2) , 7290(3). 



Remarks: The second gnathopod illustrated here is more fully de- 

 veloped than that shown by Barnard ( 1962b). 



Stenothoides bicoma J. L. Barnard 



Stenothoides ( ?) bicoma J. L. Barnard 1962c: 135-137, fig. 8. 

 Canyon material: 4852 ( 1 ) , 6805 ( 1 ) . 



