194 LIVERPOOL BIOLOGICAL SOCIETY. 
longer than the outer; outer margins of all the joints 
fringed with spines, the lateral and terminal spines being 
plumose. The inner side of the base of each of the first 
pair bears a short stout spine curved at the end. The 
second, third and fourth swimming feet (fig. 9) have both 
branches three jointed and are spinose like the first. The 
fifth pair of swimming feet (fig. 10) have two large rounded 
foliacious joints and a smaller one at outer side, each edged 
all round with fine cilia, the large joimts bearing several 
long and short spear shaped spines, plumose near the apex. 
Caudal segments very short and broad and appear like a 
divided abdominal segment terminated on each side by two 
spear shaped spinose sete, plumose near the apex, the 
inner ones considerably longer than the outer, and 
narrowed at the base. 
EXPLANATION OF PLATE IX. 
Jonesiella hywne, n. sp. 
His. 1. oNdult females o..sees cere x 250 diams. 
Hig. 2. Anterior antennal ys-c-s-ese 500 =a 
Ris. 3. ‘Posterioramtenmals sc. 500. ae 
Bo 4) AROS ie Unda tre sees eee eee S00 
Fig. 5. Mandibleand palp............ 500-laee 
hig. 6. Mirstfootjaw, =...5--.naee 500i a 
Hise, 72 Second fooblawi pss eee ee 500 __,, 
Fig. 8. First swimming foot......... 500 
Fig. 9. Third swimming foot ...... 500 
Fig.10. Fifth swimming foot......... 300 ae : 
