GAMMARUS MACULATUS. 399 



A MP HIP OB A . GA MM A RIDES. 



NATATOEIA. 



GAMMARUS MACULATUS.* 



Johnston, Zool. Journ. iii. p. 176. 



"Body six lines long, smooth, glossy; back dusky, 

 with a faint yellow band across each segment, and a row 

 of yellow spots along each side, most conspicuous on the 

 posterior half of the body; sides lighter coloured, faintly 

 marked with yellow. Antennas transparent, unspotted, 

 ciliated, with long hairs ; superior longest ; basilar joint 

 shorter than the second or third. The seta [secondary 

 appendage] is one-half the length of the last joint 

 [nagellum]. Eyes large, oblong, running backwards, 

 and having the appearance rather of a blotch of fine red 

 colour than of eyes. Arms alike, with oval dilated 

 monodactyle hands, hairy, particularly on their inner 

 margin. Legs white, monodactyle, armed with bristles. 



" Hab. Sea-coast near Berwick ; rare. 



" The specimen from which the above description was 

 taken was found among corallines, dredged from deep 

 water. It belongs to Leach's restricted genus Gammarus, 

 of which he has described four species, viz. G. aquaticus 

 [pulex], locusta, marinus, and campy lops." 



Not Gammarus maculatus of Liljeborg. 



