or THE ' SOUTHERN CEOSS ' EXPEDITION. 53 



Grenus Ampelisca, Kroyer, 1842. 



A. MACEOCEPHALA, LUljelorg. (PL 9. figs. 58-61*.) 



One female with ova. Tube " A." 



With the exception of the hind margin of the 3rd segment of 

 the metasorae, which, is rather less convex, and the lower margin 

 of the 1st joint of the last pergeopods, which is less truncate than 

 in Northern specimens, the present example agrees with Lillje- 

 borg's species, even to the peculiar spine on the outer ramus of 

 the 2nd uropods. This species is widely distributed in the 

 Arctic seas, and occurs in the British seas. 



Gernis Oediceeos, Kroijer^ 1842. 



O. Newnesi *, u. sp. (PI. 9. figs. 62-66, PL 10. figs. 67, 68.) 



Cape Adare, beach, April 5 & 15, 1899. Two specimens. 



Female with ova. 



Body compressed. Pirst four side-plates almost as deep as 

 the segments. Pirst three segments shorter than those succeed- 

 ing, raised at the hind margin. Third segment of the metasome 

 rounded behind. 



Plead as long as the first two segments ; rostrum strongly 

 deflexed, pointed, and reaching nearly to the end of the 1st joint 

 of the upper antennae ; lateral angles rounded. Eyes dark. 

 Mouth-organs normal._ 



Upper antennae reaching a little beyond the 2nd joint of the 

 lower, 1st joint about as long but twice as thick as the 2nd, 3rd 

 joint about one-third as long as the 2nd. Plagellum 10-jointed. 



Lower autennse imperfect. 



Pirst gnathojjods ; first joint barely as long as the carpus 

 and propodos, with long setae on the upper and lower portions; 

 carpus about two-thirds the length of the propodos, produced 

 behind into a rounded setose lobe ; propodos oval, the palm, 

 which is slightly contracted at the proximal end, about twice 

 as long as the rest of the hind margin. Dactylus slender. 

 Side-plates expanded below and fringed. 



Second gnathopods : first joint longer tlian the rest of the 

 Imib ; carpus more produced than in the first gnathopods ; 'pahn 

 of propodos shorter than the rest of the hind margin. Side- 

 plates rounded, oblong, fringed with more or less plumose setse. 



* Named ia honour of Sir George Newnes, Bart., M.P., who provided the 

 funds for the expedition of the ' Southern Cross.' 



