40 REV. T. E. E. STEBBING ON AMPHIPODA FEOM 



stout, carryiug a calceolus on each of tlie thirty-one joints rernainiug, the end being 

 broken ofT. The secondary flagelluin is minute and quite unobtrusive. 



Second antennce. The first three joints very short ; the fourth stout, not so long as the 

 first of the upper antennae, furnished on the upper margin with nine tufts of setviles ; the 

 fifth slender, longer than the whole peduncle of the other pair, armed above with many 

 calceoli ; the flagellum longer than the peduncle; of the forty-two joints twenty-seven 

 carry each a calceolus on the upper side, the terminal fifteen, which are more slender and 

 elongate than most of the others, having each a sensory filament. It may be supposed 

 that the abundant armature of the antennse compensates the animal for its want of eyes. 



Tipper lip. The apical margin is rounded, and the usual fringing moustache is 

 strongly developed. 



Mandibles. As in the neighbouring genus Emirus the cutting-plate is scarcely dentate, 

 the secondary plate on the left mandible is quinque-dentate, on the right it is more spine- 

 like ; the spine-row contains five or six small spines ; the molar is very feeble and unob- 

 trvisive ; the second joint of the palp is robust, tlie third is narrower but rather longer, 

 fringed with many spinules. 



Lower Up. The inner lobes are smaU. 



First maxillie. The inner plate is feeble, short, and seemingly not armed with any 

 set£e ; the outer plate carries ten spines, of which the two outermost are the largest, the 

 rest are denticulate ; the palp has a stout first joint, but the second is weak and tapering, 

 scarcely longer than the first, tipped with five setfc. 



Second maxillce. The inner plate is broader than the outer, but its apical armature is 

 shorter and very scanty. 



Maxillipeds. The inner plates reach only to the base of the palp, and are not strongly 

 armed, but have the usual apical teeth ; the outer plates reach scarcely to the middle of 

 the palp's second joint, and are fringed with not numerous sctules. The palp's second 

 joint is broad and carries a conspicuous row of setae near the apex ; the third joint is 

 similarly armed ; and the finger, which is long and strong, has a few small setules on its 

 inner margin. 



First gnathopods. The side-plates are very shallow, covering no part of the limb's 

 second joint. The fourth joint is subequal to the third, its broad apex reaching almost to 

 the base of the hand, and having the wrist attached to its front margin. The dista end 

 of the wrist is attached to the front margin of the hand, not to the side as might be 

 supposed from the drawings made from mounted and somewhat flattened dissections. 

 On the inner side of the wrist there is a small process, probably homologous with the 

 laro-e one in Eusirns which intervenes between the fourth joint and the base of the hand. 

 The hand is massive, distally widened, with long convex palm carrying setules, and 

 endin"- in a spinigerous pocket, into which the long curved finger inserts its tip. 



Second ynathopods. The side-plates are shallow, longer above than below. The 

 branchial vesicles attached to these and the five following pairs of limbs have accessory 

 lobes. The joints of the second gnathopod show saircely any difference in shape from 

 those of the first. 



First percBopods. The side-plates have a curious sort of axe-head shape, the front 



