422 EEPORT OF COMMISSIONER OF FISH AND FISHERIES. 



about seven short setfe springing from tlie bases of as many serratureS ; 

 the propodus bears on its inner surface, above the origin of the dac- 

 tylus, a comb, formed by a row of short setse, and terminated at each 

 end by a longer one. In the second pair of legs (pi. XIII, fig. 81 d) the 

 dactylus, with its terminal spine, is not as long as the propodus, which 

 bears two or three sette near its tip. The third and fourth pairs of legs 

 are shorter than the second. The last three pairs have their basal seg- 

 ments moderately swollen; the merus, carpus, and propodus of these 

 legs are armed with a few spines near their distal ends ; the dactyli are 

 short. 



The pleon is slightly broader near its base than the thoracic segments. 

 The first five segments are subequal in length, the last longer and 

 pointed behind. The uropods (pi. XIII, fig. 86) consist of a robust basal 

 segment {b) bearing two rami, of which the outer (o) is very short and 

 imiarticulate ; the inner (i) is six-jointed, tapering from the base, with 

 the segments of about equal length and provided with setie near their 

 distal ends. 



Length 2.2" ■'•, breadth O.oS""™ ; color nearly white. 



It is possible that this species may prove to be identical with L. Ud- 

 icardsii (Kroyer) Dana, although differing from Kroyer's description* and 

 figures, especially in the following particulars: The peduncle of the an- 

 tennula, which, according to his description and figure, consists of a short 

 basal segment, an elongated segment, and a third short segment, has by 

 his description the ratio to the following flagellum of five to four. The 

 basal segment that he describes and figures was probably only the 

 enlarged basal portion of the elongated segment, which, together with 

 the following segment, constitutes only about three-sevenths of the 

 length of the organ instead of five-ninths according to his description. 

 He further describes and figures the uropod asbiramous, with the inner 

 elongated ramus composed of seven segments instead of six. Other 

 differences could be pointed out in the proportions of the thoracic 

 segments and the segments of the first pair of legs. Bate and West- 

 wood t figure and describe a species, which they regard as L. Ed- 

 icardsii, although their description and figures differ somewhat from 

 Kroyer's, principally in the fact that they figure and describe the 

 uropods as simple, saying in the generic description: "Pleopoda, 

 five anterior pairs biramose; posterior pair unibranched and multi- 

 articulate;" and agam under the species (p. 130), "The posterior or 

 caudal pair of pleopoda consist of a single multiarticulate branch, of 

 which the basal joint is larger than the terminal ones: it consists of nine 

 or ten small articuli." They figure it on page 134 as simple, tapering 

 from the base and 6f re>?-jointed. These authors express their indebted- 

 ness "for this interesting addition to our British fauna to the zeal and 

 research of the Rev. A. M. Norman, who took it during the summer of 



* Natnrhist. Tidssk., vol. iv, p. 174, pi. ii, figs. 13-19» 

 tBrit. Sess. Crust., vol. ii, p. 134. 



