519 



oblong oval in form, with the hind edge serrated. Last pair of uropoda 

 nearly as long as the urosome, rami subequal and narrow lanceolate in form, 

 terminating in a simple, acute point, and edged with small spinules. Telson 

 extending somewhat beyond the basal part of the last pair of uropoda, 

 lateral lobes narrow conical in form, with a single spine attached some 

 distance inside the tip. Colour, according to Bruzelius, light reddish. Length 

 of adult male 11 mm. 



Bemarks. Mr. Norman has first pointed out, that the Megamtera 



longimana of Sp. Bate is only the male of his Meganmra Othonis, and as 

 the latter specific name is the older, it must be retained for the species. 

 The Gammarus Icevis of Bruzelius is undoubtedly this species. From the 

 following species it is easily distinguishable by the less slender form of the 

 body, the well-developed eyes, and the structure of the gnathopoda. 



Occurrence. I have only met with very few specimens of this form, 



which were collected off the south coast of Norway in moderate depths. 

 According to Boeck, it also occurs in the Christianiafjord, at Moss. 



Distribution. British Isles (Sp. Bate), Bohuslan (Bruzelius), coast 

 of France (Chevreux). 



20. Maera Loveni, (Bruzel.). 



(PI. 182, fig. 2). 

 Gammarus Loveni, Bruzelius, Skand. Aniph. Gamin, p. 59, fig. 9. 



Body exceedingly slender and elongated, with the anterior part 

 nearly cylindric in form. Cephalon scarcely as long as the first 2 

 segments of mesosome combined, lateral corners narrowly rounded at the 

 tip, and defined below by an even sinus. Coxal plates very small, not 

 nearly as deep as the corresponding segments, 1st pair produced in front to 

 a narrow linguiform lobe, 4th pair about twice as broad as they are deep 

 and scarcely larger than the succeeding pair. Last pair of epimeral plates 

 of metasome produced at the lateral corners to a small dentiform projection. 

 Eyes inconspicuous in alcoholic specimens. Superior antennae very slender 

 and elongated, equalling the length of the body, without the urosome, the 

 first 2 joints of the peduncle much elongated, especially the 2nd, 3rd joint 

 comparatively small, flagellum not attaining the length of the peduncle, and 

 composed of numerous short articulations, accessory appendage more than 

 twice the length of the last peduncular joint, and composed of about 7 

 articulations. Inferior antennae only half as long as the superior, last joint 



