399 



Page 223. 

 Add the following species: 



Parameira propinqva (Scott). 



(SuppJ. PI. 28). 



Ameira propinqva^ Th. Scott, in 20th Ann. Report of The Fishery Board for Scotland, Part III, 



p. 460, PI. XXIV, figs. 1018. 



S2)ecific Characters. Female. Body comparatively more slender than in 

 the other species of the genus, with the anterior division scarcely longer than 

 the posterior. Cephalic segment rather deep, with the rostral projection very 

 small. Last caudal segment about the size of the preceding one, anal opercle 

 somewhat prominent and, like the lateral ridges leading to it, finely denticulate. 

 Caudal rami wide apart and rather narrow, being nearly twice as long as they 

 are broad, apical setae rather slender, the inner medial one exceeding half the 

 length of the body. Anterior antennse much more slender than in the other 

 species, exceeding in length the cephalic segment, none of the setae plumose, 2nd 

 joint much the largest, 3rd joint more than twice as long as the 4th, terminal 

 part not attaining the length of those two joints combined. Posterior antennse like- 

 wise more slender than usual, and having the proximal joint distinctly subdivided, 

 outer ramus uniarticulate, bisetose. Oral parts of the structure characteristic of 

 the genus. 1st pair of legs with the inner ramus considerably longer than the 

 outer, its 1st joint comparatively narrow and about the length of the other 2 

 combined. The 3 succeeding pairs of legs agreeing in structure with those in 

 the type species. Last pair of legs with the distal joint long and narrow, sub- 

 linear in form, with both edges densely ciliated, tip somewhat obliquely truncated 

 and carrying 5 rather unequal setae; inner expansion of proximal joint short and 

 somewhat narrowed at the end, which carries 4 spiniform setae. 



Colour whitish. 



Length of adult female 0.64 mm. 



Remarks. This is a genuine Parameira, agreeing in all essential charac- 

 ters with the other species included in that genus. It is, however, easily distin- 

 guished from any of them by its comparatively more slender body and the con- 

 siderably produced anterior antennse. 



Occurrence. Some specimens of this form were taken last summer at 

 Korshavn, in the place where Ameira tenuicornis occurred. 



Distribution, Scottish coast (Scott). 



