HARPACTIOUS. 149 



localities, and appears to be convinced of the specific 

 distinctness of his H. gracilis. 



It is scarcely needful to note the numerous localities 

 from which I have memoranda of the occurrence of 

 this species. I have found it in many places on the 

 coasts of Durham and Northumberland, as well as in 

 Galway, Mayo, the Scilly Islands, and the Firth of 

 Clyde. Mr. Norman also notes its occurrence at 

 Tobermory in the Island of Mull. 



2. HAEPACTICUS FULVUS, Fischer. PL LXIV, figs. 1 11. 



Harpacticusfulvus, Fischer. Beitrag. zur Kenntniss der Entom. 



(Abhandl. der Konig. Bayer. Akad., 



Bd. viii, p. 656, t. i, figs. 3033; t. ii, 



figs. 3439 (1860). 



chelifer, Lilljeborg. De Crustaceis ex ord. trib., p. 200, 



tab. mi, figs. 211 (1853). 

 crassicornis, Brady and Robertson. Brit. Assoc. 



Report, p. 196 (1875). 

 curticornis, Boeck. Oversigt Norges Copepoder, 



p. 38 (1864). 



Tigriopus Lilljeborgii, Norman. Last Shetland Dredging Report, 

 p. 296 (1868). 



Rostrum short and blunt. Anterior antennae (fig. 1) 

 robust, second and third joints longer than the fourth, 

 and nearly equal, seventh and eighth joints very short, 

 about half as long as the sixth and ninth, which are 

 nearly equal. Inner branch of the posterior antenna 

 rather large, 3-jointed (fig. 3). Lateral segments of 

 the maxilla (fig. 4) slender. Posterior foot-jaw (fig. 5) 

 forming a broadly ovate or sub-pyriform chelate hand, 

 without an angular promontory, but bearing a strong 

 bristle on the inner margin which is strongly convex, 



