128 CAEL BOVALLIUS, AMPHIPODA HYPEEIIDEA. I. 2. HYPEEIIDJE. 



Euiulopis mirabilis. 



The fifth, sixth and seventh pairs (PL VIII, fig. 28 — 31) are equal in length and 

 distinctly longer than the two next preceding pairs. The femur is dilated, that of the 

 fifth pair is almost as broad at the base as at the apex, that of the sixth and seventh pairs 

 is distinctly broader at the base than at the apex, fully twice as long as broad. The 

 genu is somewhat more long than broad. The tibia is longer than the genu. The carpus 

 of the fifth and sixth pairs is about as long as the two preceding joints together, that of 

 the seventh pair is somewhat shorter; the front margin is straight. The metacarpus of 

 the fifth and sixth pairs is a little shorter than the carpus, that of the seventh pair is 

 longer than the carpus; the metacarpus is feebly bent, armed with some few equidistant 

 bristles along the front margin; the hind margin is somewhat convex; the lower end is 

 not dilated. The dactylus equals in length scarcely more than a fourth of the meta- 

 carpus; at the front corner of its base there is an outlet for the glands, larger than in 

 the third and fourth pairs. Glands as in the preceding pairs. 



The pleon is fully as long as the whole person; the first segment is somewhat 

 longer than the last two pergonal segments together. The last pleonal segment is a little 

 shorter than the first one; the lateral parts are obtusely rounded. The hair-covering is 

 thin on the first two segments, and almost wanting on the last one. 



The pleopoda (PI. VIII, fig. 32) are similar in shape to those in Euiulopis Loveni, 

 but the tongue-shaped process projecting from the inner lower corner of the peduncle is 

 shorter. The coupling spines and the cleft bristle are like those in the preceding- 

 species. The inner ramus of the first pair consists of eleven joints, the outer one of twelve. 



The urus is as long as the last pleonal segment, almost entirely naked. The first 

 segment is about twice as long as the last coalesced one. The last segment is more 

 broad than long, showing a deep notch on each side, as in the preceding species. 



The uropoda (PL VIII, fig. 33). The first pair reach to the apex of the last pair; 

 the peduncle is broad, almost linear, three times as long as broad; the margins are entirely 

 smooth. The rami are lanceolate; the outer ramus is shorter and somewhat narrower 

 than the inner, half as long as the peduncle, the outer margin is smooth, the inner one 

 finely serrated; the inner ramus is serrated along both margins. The second pair reach 

 to the middle of the rami of the last pair; the peduncle is narrower than that of the 

 first pair, broader at the apex than at the base; the outer margin is curved, the inner 

 straight; both are smooth. The rami are narrower than those of the preceding pair, equal 

 in length and scarcely longer than half the peduncle; the outer ramus has the outer 

 margin smooth, the inner one serrated; the inner ramus is serrated along both margins. 

 The third pair; the peduncle is broader than that of the first pair, about twice as long 

 as broad; the margins are smooth. The rami are lanceolate, equal in length and more 

 than half as long as the peduncle; the outer ramus is smooth on the outer margin and 

 serrated along the inner one; the inner ramus is smooth on the inner margin and serrated 

 along the outer one. 



The telson is spade-shaped, as long as broad; it is considerably shorter than half 

 the peduncle of the last pair of uropoda, but longer than half the last coalesced ural 

 segment. A broadly rounded process projects from its under side between the bases of 

 the last pair of peduncles. 



