JONUSIELLA. 41 



Caudal segments very short and broad ; setae finely 

 aculeate. Length -^g-rd of an inch (1-1 mm.). 



This species occurred plentifully in a dredging made 

 off Porcressa Bay, Scilly, in twenty fathoms, on a 

 bottom of hard sand ; also, less plentifully, in thirty- 

 five fathoms off Red Cliff, Yorkshire. 



2. JONESIELLA SPINULOSA (Brady and Robertson). PI. 



XLVIII, figs. 1417; and 

 PL XLIX, figs. 14, 15. 



Zosime spinulosa, B. & R. Brit. Assoc. Report, p. 196 (1875). 



This differs from the preceding species chiefly in 

 the structure of the mandibular palp and the first and 

 fifth feet. The basal joint of the mandible-palp is broad, 

 and the two branches short and stout (PI. XLVIII, 

 fig. 15). The second joint of the inner branch of the 

 second foot is twice as long as the first joint. The 

 basal joint of the fifth foot (fig. 17) is somewhat 

 rounded at the apex, and of moderate width ; not much 

 broader than the outer joint. Length -^th of an inch 

 (85 mm.). 



The following are the localities in which /. spinulosa 

 has been noticed : Westport Bay (Ireland), taken in 

 the tow-net; dredged off Hartlepool on a sandy 

 bottom ; and in a depth of thirty-seven fathoms six- 

 teen miles off Hawthorn (Durham), on a muddy bottom; 

 in all cases sparingly. 



The resemblance between this and the preceding 

 species is, perhaps, too close to be altogether satis- 

 factory, especially as specimens of the male of /. 



