BIHANG TILL K. SV. VET.-AKAD. HANDL. BAND 10. N:0 11. 19 



following five joints togetlier. Tliey are like those of tlie 

 lirst pair, scarcely more slender. 



The five first segments of the pereion increase in lengtli; 

 tlie fifth is twice as long as tlae first, and the broadest of all ; 

 the first segment is as long as the head, the processes are veiy 

 broad, embracing the posterior half of the head, the ends bent 

 angvilarly downwards. The sixth segment equals three qnarters 

 of the fifth in length, but is narrow^er; it is nearly four times 

 as long as the seventh, and much broader (23 : 14). 



The epimerals (Pl. IV fig. 35) of the second pereional 

 segment are small, ear-shaped, occupying only half of the 

 rounded end of the segment. The epimeral of the third seg- 

 ment is large, ear-shaped, more than twnce longer than the 

 preceding; it occupies about half the segment. That of the 

 fourth segment is as large as the preceding, deep at the anterior 

 end, narrower behind, occupying about half the segment. The 

 epimeral of the fifth segment is of the same form as the 

 preceding, but smaller, occupying no more than a third of the 

 end of the segment. That of the sixth segment is of the same 

 size as the preceding, rhomboidal, occupying two thirds of the 

 segment. The last epimeral is oblong, with rounded ends; it 

 occupies the wholc length of the seventh segment. 



The femora of the four first pairs of loerelopoda are longer 

 than broad (Pl. IV fig. 38). The tibise, carpi, and metacarpi 

 are very short; the dactyli long, strongly curved. In the three 

 last pairs the femora are much broader than long (23 : 16), 

 the tibise and carpi are short, the metacarpi longer, the dactyli 

 shorter but stout. The femora have no distinct carina (Pl. IV 

 fig. 39). 



The pleon is immersed in the last segment of the pereion, 

 but the lateral parts of the first pleonal segment are not quite 

 concealed. The first segment is as long as the second, broader 

 than half the fifth (11 : 14). The fifth segment is the longest, 

 twice as long as the first. The four last segments are equal 

 in breadth, as broad as the urus. The pleon is shorter than 

 the sixth pereional segment. 



The urus is semicircular, symmetrical, a little more than 

 twice broader than long (15 : 7), smooth. The pleon and urus 

 together are a little longer thau a fourth of the pereion and the 

 head too-ether. 



