no. 1654. AMPHIPODA FROM WEST NORTH AMERICA— HOLMES. 521 



This species may readily be distinguished from P. oculatus by its 

 stouter appendages, by its acute infero-posterior angle of the third 

 abdominal segment, by its narrower hands, and by the larger number 

 of setae on the lower margins of the anterior coxal plates. From P. 

 spinosus it is readily distinguished by the much broader joints of the 

 posterior pera?opods and the larger serrations in the posterior margin 

 of the basal joints of these appendages. The lack of fringes of plu- 

 mose seta? on the terminal uropods in the male distinguishes it from 

 the other species of the genus. 



HARPINIA OCULATA, new species. 



Eyes rather small, oblong, oblique; postantennal corners of the 

 head not prominent. Antenna? short, subequal, the stout first joint 



Fig. 28.— Hakpina oculata, female, ub,, third segment of the abdomen; gn x , first 

 gnathopod; mrp, end of palp of maxilliped; p 4 , fourth per^opod; p it fifth 

 PER.EOPOD; ur s , third uropod. 



of the first antenna? much longer than the next two, the distal part of 

 the lower margin furnished with about twelve distally plumose setae, 

 the second joint with about ten long seta? on the distal half of the 

 lower margin; flagellum with about nine joints; secondary flagellum 

 about two-thirds the length of the primary, and composed of about 

 seven joints. Second antenna? with a very long narrow acute lobe 



