32 CARL BOVALLIUS, AMPHTPODA HYPERTIDEA. I. 2. PARAPHRONIMIDtE. 



The branchial sacks of the fifth and sixth pairs of perteopoda are longer or as long 

 as half the corresponding femora. 



The first pair of permopoda (PL II, fig. 14) have the femur somewhat dilated, 

 the hind magin convex; it is scarcely as long as the following joints together. The genu 

 is smooth, shorter than long; the tibia longer, the lower hinder corner produced, armed 

 as in the preceding species. The carpus is shorter shan the two preceding joints together, 

 narrower below than in Paraphromina gracilis. The metacarpus is considerably shorter 

 than the carpus, robust, rapidly tapering. The dactylus is long, equalling a third of the 

 length of the metacarpus. 



The second pair have the femur considerably shorter than the following joints 

 together. The carpus is half as long as the femur, and equals the length of the meta- 

 carpus, which has apical projections, similar to those of the preceding species. 



The third and fourth pairs. The femur is much shorter than the three following 

 joints together. The carpus is a little longer than the genu and tibia together. The 

 metacarpus is shorter than the metacarpus of the fifth and sixth pairs, and a little 

 shorter than the next preceding joint. 



The fifth and si.rth pairs are equal in length, a little longer than the peraeon. 



The seventh pair are only a little shorter than the sixth pair (7 : 8), reaching farther 

 down than to the middle of the metacarpus. The femur is as long and as broad as the femur 

 of the preceding pair, and is only a little shorter than the three following joints together. 



All the joints of the pera?opoda are provided with glandular cells as in the 

 preceding species. 



The pleon. The lateral parts of the segments are equal in depth, evenly rounded, 

 as long as the corresponding segments. 



The pleopoda, (PI. II, fig. 15) of the male are much smaller and more slender than 

 in the preceding species, decreasing in size posteriorly. The number of articuli of the 

 rami is the same in both sexes as in Paraphronima gracilis. 



The first segment of the urus is twice as long as the coalesced second and third, 

 and nearly as long as the last pleonal segment. 



The uropoda. The peduncle of the first pair is broader than in the preceding 

 species, a little longer than the inner ramus; the outer ramus is smooth, more than half 

 the length of the inner; the inner ramus is more than three times as long as the breadth of the 

 peduncle; it is serrated on both margins. The second pair have the peduncle much broader 

 than the first pair, only a fifth longer than the inner ramus; the outer ramus is almost 

 as long as the inner, smooth on the outer margin and serrated on the inner margin; the 

 inner ramus is serrated on both margins; the second pair reach almost to the apex of the 

 last pair. The third pair have the peduncle as broad as that of the second pair-, not twice 

 as long as the rami; the outer ramus with the outer margin smooth the inner serrated; 

 the inner ramus with both margins serrated; the inner ramus much longer than the 

 breadth of the peduncle. 



The telson is triangular, narrower than the peduncle of the last pair of uropoda. 



