104 CARL BOVALLIUS, AMPHIPODA HYPERIIDEA. I. 2. HYPERIID.E. 



Hyperoche Luetkeni. 



The carpus is broader and stronger than in the male, the front margin is feebly curved, 

 a little shorter than the front margin of the metacarpus, the hind margin is strongly 

 convex; the carpal process is as long as the stem of the carpus, thick, robust, knife- 

 shaped; the front margin or the edge is armed with more than twenty, broad-edged, 

 retroverted teeth; it is longer than the hind margin -of the metacarpus (PI. VII, fig. 21). 

 The metacarpus is very broad at the base, tapering, scarcely more than twice as long 

 as broad at the base. The front margin is feebly curved, smooth; the hind margin is 

 somewhat convex, armed with more than twenty retroverted teeth, like those on the front 

 margin of the carpal process; the under margin is armed with seven to eight small, sharp- 

 pointed teeth, as in the male. The dactylus is feebly curved, broad at the base, the 

 hind margin is serrated; it is almost half as long as the metacarpus. Glands as in 

 the male. 



The second pair (PI. VII, fig. 22) have the femur longer but scarcely narrower 

 than in the first pair. The genu is as long as broad. The process of the tibia is much 

 shorter than in the first pair, fringed with bristles. The front margin of the carpus is 

 curved, the hind margin is more convex than in the first pair; the carpal process is longer 

 than the stem of the joint, the front margin is much longer than the hind margin of the 

 metacarpus, feebly S-shaped, and armed with retroverted teeth as in the preceding pair. 

 The metacarpus is three times as long as broad at the base, the front and hind margins 

 are feebly curved; the hind and under margins are armed as in the first pair. The 

 dactylus is feebly curved, serrated on the hind margin, scarcely equalling more than a 

 fourth of the length of the metacarpus. Glands in all the joints. 



The third and fourth pairs (PI. VII, fig. 23 and 24). The femur is comparatively 

 broader than in the male, linear, not three times as long as broad; the lower hinder corner 

 of the femur is a little produced, and tipped with a short bristle. The genu is more Ion© 

 than broad. The tibia is not twice as long as the genu, but twice as long as broad, 

 broader below. The carpus is longer than the tibia, perhaps a little more dilated than 

 in the male, and not three times as long as broad; the front margin is feebly curved, 

 the hind margin is perfectly straight, sharply serrated, the lower half of it is divided into 

 two edges, exactly as in the male, the outer of these edges is produced downwards into 

 a serrated process (PI. VII, fig. 24), usually a little longer than in the male, and distinctly 

 longer in the third pair than in the fourth. In } ? oung females this process is shorter 

 and less serrated than in the adult ones. The metacarpus is longer than the carpus, 

 with the hind, straight margin sharply serrated. Thp dactylus is feebly curved, smooth, 

 equalling a fourth of the length of the metacarpus. Glands are most richly developed 

 within the femur. 



The fifth, sixth and seventh pairs (PI. VII, fig. 25). The femur is considerably 

 narrower than in the male, almost linear, more than three times as long as broad. The 

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

 front margin is provided with some few minute hairs. The carpus is longer and a little 

 narrower than the tibia, the front margin is fringed with some few minute hairs. The 

 metacarpus is a little longer than the carpus, the front margin is straight, smooth. The 

 dactylus is stout, curved, equalling a third of the length of the metacarpus. Glands 

 as in the male. 



