174 



CARL BOVALLIUS, AMFHIPODA HYPERllDEA. I 2. 



HYPERIIDTK. 



Hyperia Latreillei. 



longer thaii the breadth at the apex, and distinctly longer than the inner ranius; the outer 

 ramus is longer but narrower than the inner, serrated along the inner margin, and smooth 

 on tlie outer; the inner ramus is broadl)' lanceolate, narrow and sharp-pointed at the apex, 

 and serrated along both margins; it is a little longer than the breadth of the peduncle. 

 The teUon is broader than long, spade-shaped; it is broader than, and more than 

 half as long as the peduncle of the last pair of uropoda; it equals in length the last ural 

 segment. 



The fem a le. 



Pl. X, fiK. 14—17. 



Hyperia Latreillei, H. Milne Edwards. 

 Drawn from the supposed type-specimen in the collection of the »Musée d'Hi8toire Natiirelleu in Paris. 



The hody, especiall_y the pera?on, is much broader and ^vider than in the male. 

 The pleon and urus together are a little shorter than the pereeon. 



The Jiead is as long as the first two personal segments together, and as deep as 

 broad; the depth equals the length of the first four pera?onal segments together. 



The first j^air of ante7i7icE (Pl. X, fig. 14 and 15) do not reach to the under margin of 

 the head. The first joint of the peduncle is thick and stout, cylindrical, and longer than 

 broad; it is twice as long as the two foUowing joints together, which are nearly equal 

 in length. The single flagellar joint is more slender than the peduncle, and much longer, 

 slightly curved downwards, and set with hairs along the under margin. 



The second pair of antennw (Pl. X, fig. 16 and 17) are nearly as long as the first 

 pair. The three peduncular joints are almost equal in length, the first being much the 

 thickest. The single flagellar joint is slender, evenly tapering towards the apex; it is 

 about as long as the whole peduncle, and is fringed along the margins with minute 

 hairs (Pl. X,"fig. 17). 



The moutli-organs are like those in the male. 



The epimerals are somewhat deeper than in the male. 



