REPORT ON THE AMPHIPODA. 1177 



stout, the larger ramus with five spines on one border and the apical four, consisting of 

 two large and two small ; the shorter ramus has three pairs on the border, and the usual 

 four on the apex ; the third pair are very short, the peduncles broad, longer than the 

 rami, reaching beyond the telson, having a few spines on the margins ; the outer ramus 

 might be described as a narrow oval, with two strong spines not far below the centre, two 

 just above the apex, and at the apex a group of slender spines, two longer and thinner 

 than the others ; the inner ramus also oval, about half the breadth and scarcely half the 

 length of the outer, therefore very small, yet carrying two stout spines, one at the apex 

 and one higher up. 



Telson about equal in breadth and length, w T idest near the base, narrowing only a 

 little to the truncate distal margin, which has a small but strong hook at each corner, 

 turned upwards and backwards, near the base of which are planted some slender spines 

 and spinules, there being also a couple on each margin higher up ; the distal margin 

 between the hooks is not absolutely straight, but rather tends to concave in the 

 centre, with a little piniple-like jutting-out of the margin on either side of the very 

 shallow curve. 



Length. — The specimen, in the position figured, measured, from the rostrum to the 

 extremity of the uropods, one-quarter of an inch. 



Locality. — Station 149h, off Cumberland Bay, Kerguelen, January 29, 1874 ; depth, 

 127 fathoms; bottom, volcanic mud. One specimen. 



The specimen from which the fifth pereeopod is described was also taken at Kerguelen, 

 depth not mentioned. 



Remarks. — The specific name refers to the ornamentation of the gnathopods. Of 

 Haplocheira typica, Haswell, I have been enabled to examine a specimen through Mr. 

 Haswell's kindness. Of Gammarus barbimanus, Thomson, Mr. G. M. Thomson, not at 

 the time having any but the type-specimen available, very obligingly sent me enlarged 

 figures. Since then in a joint paper Messrs. Thomson and Chilton have identified as one 

 species, under the name Corophium barbimanum, Gammarus barbimanus, Thomson, 

 Coropliium lendenfeldi, Chilton, Haplocheira typica, Haswell. Mr. Haswell also in a 

 recent paper has expressed the opinion that Corophium lendenfeldi is probably the same 

 as Haplocheira typica. The genus is distinguished from Coropliium by many particulars, 

 of which it may suffice to mention the three-jointed mandibular palp, the inner plate of the 

 first niaxillae fringed with setae, the accessory flagellum of the upper antennae, the short 

 third joint of the second gnathopods, and the biramous third uropods. The name of the 

 species referred to must therefore be Haplocheira barbimanus, Thomson. 



Without the opportunity for comparison, one might have easily jumped to the con- 

 clusion that the Kerguelen species was specifically identical, as well as generically, with 

 that reported from Australia and New Zealand ; but though the resemblances are the 



(ZOOL. CHALL. EXP. — PAET LXYII. — 1888.) XxX 148 



