184 
the first pair is two-jointed. The endopodites of the second, third and fourth pairs are three- 
jointed. The outer edge spine on the first joint of the exopodite of the third pair of feet is 
considerably elongated, and extends to the end of the outer edge spine on the second joint. 
The outer edge spine on the first joint of the exopodites of the second and fourth pairs of 
feet is normal (Plate III, fig. 12). 
The fifth pair of feet is symmetrical and is without any trace of an endopodite. Each 
foot is composed of two free joints attached to a one-jointed basal part. The second free joint 
is rather long and slender. The apex is furnished with one long and one very small spine. 
The long spine is on the inner edge of the apex (Plate III, fig. 16). 
Male — length 3 mm. 
Seen from above, the male appears somewhat shorter and more robust than the female. 
The last thoracic segment is produced similar to that of the female. When seen from the side, 
the terminations appear bluntly rounded and are directed ventrally (Plate III, figs. 1 and 2). 
The abdomen is composed of five segments. 
The right antennule is twenty-jointed. The middle joints are very little inflated. The 
distal hinge joint is boldly arched (Plate III, fig. 5). 
The antennae, mandibles, maxillae and maxillipedes are similar to those of the female. 
The first, third and fourth pairs of feet are also similar to those of the female. The 
outer edge spine on the first joint of the exopodite of the third pair of feet extends to the 
end of the outer edge spine on the second joint. 
The outer edge spine on the first joint of the exopodite of the second pair of feet is 
moderately long and stout. It reaches to the base of the spine on the second joint. The outer 
edge spine on the second joint is very long and stout. It is slightly curved, and extends 
distinctly beyond the distal end of the third joint (Plate III, fig. 13). 
The fifth pair of feet is asymmetrical. The basiopodite is two-jointed. The exopodite of 
the right foot is composed of two joints. The first joint is nearly twice the length of the second 
joint. The second joint is somewhat spiniform. The distal end is furnished with one long and 
one very short spine. There is no trace of an endopodite on the right foot. The exopodite of 
the left foot is composed of three short and nearly equal joints. The third joint is narrower 
than the first or second joints. It is furnished with one long and one short apical spine. The 
long spine is on the inner angle of the apex. The inner distal angle of the second joint of 
the basiopodite of the left foot is furnished with a long, stout and densely plumose spine. This 
may represent a rudimentary endopodite (Plate III, fig. 15). 
The female of this species is apparently very closely related to the form described by 
Professor Sars as Bathypontia elongata, but until figures are given by that author it is per- 
haps better to regard it as distinct, especially as the male is evidently different. The male 
fifth pair is quite distinct from the figure given by Farran. This author states ‘The fifth feet 
‘are almost symmetrical, and consist on each side of four elongate tapering joints, the last 
‘joint terminated by a small spine’. The figure does not agree very well with the description. 
The end joint of one of the exopodites is shewn as spiniform, but there is no small terminal 
spine. This slight defect, however, is probably due to an error in lithographing the plate. The 
184 ; 
