186 CARL BOVALLItfS, AMPHIPODA HYPERlIDEA. I. 2. HYPERIIDiE. 



Hyperia galba. 



of the carpal process are fringed with stout but short bristles; the front margin of the 

 carpus is straight with one or two short spines near to the lower corner; the hincl margin 

 shows one notch, and is sparingly provided with bristles. The metacarpus is as long 

 as the carpus, evenly tapering towards the apex; the front margin is convex showing- 

 three or four slight notches, each notch with a short spine; the hind margin is straight 

 and strongly serrated, the teeth being regularly three-pointed. The dactylus is slightly 

 curved, serrated on the hind margin, and nearly half as long as the metacarpus. In this 

 and the following pairs of perseopoda the glands are similar to those in the four preced- 

 ing species. 



The second pair (PI. X, fig. 28 and 29) are a little longer than the first and do 

 not reach farther than to the middle of the carpus of the third pair. The femur is a 

 little longer than the four following joints together; the lower hind corner is set with a 

 few short bristles. The genu is as long as broad, with a few short bristles at the lower 

 hind corner. The tibia is longer than the genu; the produced portion is evenly rounded, 

 spoon-shaped, and fringed with bristles. The carpus is long, dilated, and strongly pro- 

 duced, the carpal process being more than half as long as the rest of the joint; the front 

 and hind margins of the carpus are straight, and without bristles; the front side of the 

 carpal process is more than half as long as the hind margin of the metacarpus; the marg- 

 ins are fringed with comparatively short bristles. The metacarpus is slender, feebly 

 tapering towards the apex, and considerably longer than the carpus without the carpal 

 process; it is more than three times as long as broad at the base; the front margin is 

 almost straight, without spines or bristles; the hind margin is straight, not notched, but 

 strongly serrated, the teeth being regularly three-pointed as in the first pair. The dac- 

 tylus is slightly curved, serrated on the hind margin, and equals a little more than a third 

 part of the length of the metacarpus, and is considerably longer than the breadth of the 

 same joint. 



The third and fourth pairs. The femur is elongated, somewhat more than three 

 times as long as broad; the hind margin is smooth, without spines; the lower^corner 

 carries one single short spine. The genu is as long as broad. The tibia is much longer 

 than the genu, with the margins entirely smooth. The carpus is longer than the tibia, 

 and carries two short, spine-like bristles on the hind margin. The metacarpus is much 

 more slender and much longer than the carpus; it is twice as long as the tibia, but much 

 shorter than the femur; the front and hind margins are entirely smooth. The dactylus 

 is slightly curved, smooth, and scarcely longer than a fifth part of the length of the 

 metacarpus. 



The fifth, sixth and, seventh pairs are somewhat longer than the two preceding pairs. 

 The femur is considerably broader than that in the third and fourth pairs, twice as long- 

 as broad; the front margin is convex, and smooth; the whole of the hind side forms a 

 long groove for the reception of the following joints. The genu is longer than broad. 

 The tibia is half as long again as the genu, with the margins smooth. The carpus is 

 a little longer than the tibia in the fifth and sixth pairs, but quite as long as the tibia 

 in the seventh. The metacarpus is longer than the carpus and quite as long as the 

 metacarpus in the third and fourth pairs; it is not twice as long as the tibia, and con- 



