(EDICERID^E. 69 



1905. Krbyera arenaria, Reibisch, Faunistisch-biologisclie Unter- 

 stichuugen iiber Amphipodeii der Nordsee, p. 18:2, pi. v. 

 fig.-,. 6-10. 



The lettering on the plates vi. :mcl vii. of the Supplement 

 in Sars's work is " Kroyera arenaria" and in the text we read 

 Pontocratesnorvegicus, Boeck ( Kroyera arenaria, Sp.-Bate); 

 but the true arenaria has not yet been found in Norway. 



First gnathopod (fig. 5) with the hand somewhat tri- 

 angular, widening towards the extremity which is nearly 

 transversely truncated, (brining a distinct palm on which the 

 linger closes, and is equal to it in length ; the carpal lobe 

 is slightly longer than the hinder margin of the p'ropodos 

 anterior to the palm. The second gnathopod (fig. o') is 

 very slender, but scarcely as slender as in P. arenarius ; the 

 hand narrow and of about equal breadth throughout ; the 

 chela (fig. 7) has the thumb not much broader than the 

 finger; the porr^cted portion of the carpus extends a little 

 beyond the chela, and is remarkable tor the spoon-shaped 

 form of its extremity. The basos of the last perreopods 

 (fig. 8) has its hinder margin straight or slightly emarginate, 

 furnished with numerous setae on its side at some little 

 distance within the margin. The rostrum is short and only 

 slightly curved. Autennules \\ith the three joints of the 

 peduncle subequal in length, though the basal joint is slightly 

 the longer. 



This appears to be much more common on our coasts than 

 the last, or it may be that, as it occurs in shallow water, we 

 have more frequently taken it with the dredge ; while 

 P. arena rin$, which is a burrower between tide-marks, has 

 escaped us. 



Iltracombe, Exmouth, Dartmouth. Whitsand Bay, Padstow, 

 and Fowey (A. M. 3 T .). 



PONTOCRATES ALTAM . \KIXUS (Bate & Wcstwood). (PL VII. 



figs. 1-4.) 



1362. Kroyera altainrina, Bate & Westwood, vol. i. p. 177. 



1893. Kroyera arenariii, Delia Valle, p. 5-54, pi. iv. fig. 1, pL rxxiv. 



figs. 18-34. 



1>95. Pontocrates attamarinus, Sars, p. 695, Suppl. pi. vii. fig. -. 

 1905. Kroyera altainarina, Reibisch, Fauni.-4i.sch - biologiache 



Untersuchungen ubt-r Amphipoden der Nordsee, p. 183, pi. v. 



figs. 11-15. 



First gnathopod (fig. 1) with the hand long ovate, widest 

 at the commencement of the palm and narrow at the ex- 

 tremities ; palm oblique, continuous with the hind margin, of 

 which it occupies more than half, a spine at the commence- 

 ment of the palm ; carpal lobe reaching forwards to the 



