216 CARL BOVALLIUS, AMPHIPODA HYPERItDEA. I. 2. HYPERIIDiE. 



Hyperia promontorii. 



The first pair of maxillae. The apical portion of the principal lamina is not half 

 as broad nor half as long as the secondary lamina, and is tipped with long bristles. 



The second pair of maxillw. The apical portion of the principal lamina is almost 

 cylindrical, tipped with two hook-like spines, and densely set with long, slender bristles. 

 The secondary lamina is broader than the principal, set with bristles, and provided with 

 two short spines at the apex. 



The maxillipeds. The basal portion is tolerably broad, broadest at the base, then 

 abruptly constricted, with the apical part linear. The lateral lamina? are half as long as 

 the basal portion, elongate-ovate, with the inner margins notched and armed with a few 

 short spines. The median lobe is feebly developed. 



The perceon. The first two coalesced segments are as long as the third and fourth 

 and half the fifth, and quite as long as the seventh. 



The epimerals are deeper than long, and are almost as long as the under margins 

 of the corresponding segments. 



The branchial sacks are wide, and are somewhat shorter than the femora of the 

 corresponding legs. 



The first pair of perwopoda (PL XI, fig. 4 and 5). The femur is nearly as long 

 as the four following joints together, broadest in the middle, and more than twice as long 

 as broad. The genu is as long as broad, without bristles. The tibia is longer than the 

 genu; the lower hind part is produced; the hind margin is strongly convex, and armed 

 with three equidistant long bristles. The carpus is not fully as long as the two preced- 

 ing joints together, dilated, and only a little longer than it is broad at the lower end; the 

 front margin is feebly curved, almost straight, with a single bristle at the lower corner; 

 the hind margin is twice notched, and each notch is provided with a long bristle; the carpal 

 process is broad, spoon-shaped, with a long bristle at the apex and four bristles along each 

 margin. The metacarpus is longer than the stem of the carpus, more than twice as long 

 as it is broad at the base, and carries two long bristles on the front margin ; the hind margin 

 is serrated, with long simple teeth. The dactylus is strongly curved, much mure than 

 half as long as the metacarpus, and armed with some spine-like teeth on the hind margin. 

 Glands are well developed in all the joints except in the dactylus. 



The second pair (PL XI, fig. 6) are much longer than the first, and reach almost 

 to the middle of the metacarpus of the third pair. The femur is narrow, somewhat 

 broader below than at the base, more than three times as long as it is broad below, and fully 

 as long as the four following joints together; the front margin is straight; the hind margin 

 is feebly S-shaped. The genu is longer than broad, and smooth. The tibia is a little longer 

 than the genu, with some bristles at the lower produced corner. The carpus is dilated 

 and much produced; the stem of the carpus is shorter than the two preceding joints 

 together; the front margin is nearly straight, with a single bristle at the lower corner; 

 the carpal process is only a little shorter than the stem of the joint; the margins are 

 fringed with a few very long bristles; the front side of the carpal process is more than 

 half as long as the hind margin of the metacarpus. The metacarpus is broad at the 

 base, tapering towards the apex, not fully three times as long as its greatest breadth, 

 and much longer than the stem of the carpus; the front margin is convex, and provided 



