86 AMPniPODA. 



flagellum of about eleven articulations, accessory appendage 

 as long as two joints of the flagellum, three-jointed ; third 

 joint minute. 



The first gnathopods have the palm transverse and slightly 

 convex (fig. 4); the finger not longer than the palm, its edge 

 bearing seise but no spine. Second gnathopods with coxa 

 (not produced) rounded at the corner and edged with short 

 simple setae ; the limb (fig. 5) resembles in general character 

 that of L. pilosus, but the wrist and hand are proportionately 

 not so broad ; the nail is equal to half the hand in length. 



First perseopod with the nail much produced, as long as 

 the propodos. Last perseopod of great length, when stretched 

 backwards extending beyond the uropods by the entire length 

 of the greatly produced propodos and part of the carpus ; 

 propodos bearing spines situated at nearly equal distances 

 apart ; the nail simple (not bidentate). First and second 

 uropods with falcate external processes reaching to half or 

 more than half their length, armed laterally with ordinary 

 spines, but at their extremities bearing short stumpy spines 

 characteristic of the genus. Last uropods (fig. 7) small, 

 with outer branch entirely devoid of lateral setse or spines, 

 and the extremity carrying about six setae ; inner branch 

 slightly shorter, without lateral setaB or spines, terminating in 

 a single spine. Telson of the usual form in the genus, 

 abruptly truncate behind, with the corners slightly exserted. 

 Length of ? laden with ova 4 mm. 

 Falmouth Harbour, not rare in 1884 (A. M. N.}. 

 The species is new to our fauna. 



It is not without hesitation that we have followed Chevreux 

 in merging his species in that of Grube. We consider the 

 chief characters of the species to be : 1st, the hump on the 

 first segment of urosome ; 2nd, the three-jointed appendage 

 of antennules; 3rd, the great length of the nail of the first 

 perasopod ; 4th, the greatly produced last perasopod with its 

 finger simple; 5th, the character of the last uropod. In 

 Grube's figure the nails of the earlier pera>opods are repre- 

 sented as short, and the last perseopods as much shorter than 

 they are really, but we must not expect accuracy in details like 

 this in 1866. In Delia Valle's figures we cannot recognize 

 the short last perasopod or the last uropod as correct, while the 

 meros of first pera3opod is of remarkable length as compared 

 to carpus. If these drawings are camera-drawn and really 

 correct, it may be doubted if it is the same species as that of 

 M. Chevreux. 



