MARINE CRUSTACEANS. 715 



than the first, as in the latter species. The long olfactory setae are present. The second 

 antennae closely resemble those of L. lignorum. The epistome, lips, mandibles, and both 

 pairs of maxillae agree with those of the last-mentioned species. The maxillipeds also are 

 nearly the same in structure, but with a differently shaped epipod. This is little more than 

 twice as long as broad, broadly rounded at both ends, reaching well beyond the long narrow 

 second joint of the maxilliped, the ovoid form impaired only by the lower part of the inner 

 margin being slightly concave. This appendage in L. segnis is about four times as long as 

 broad, and is apically acute in the other two species. 



The first gnathopods are as usual distinguished from the other limbs by the fifth joint 

 underriding the sixth, and having no free hind margin. Along front and hind margins of 

 the third and along the hind margin of the three following joints small blunt spines are 

 discernible. At the hinder end of the sixth joint there is a prominent spine with a convex 

 comb as in L. lignorum, and the finger just above its long curved nail has the well-known 

 bifid spine. The other limbs agi-ee closely in shape and armature with those of the last 

 named species, the first and second peraeopods being tjie smallest, but distinguished by their 

 position as confronting one another. The fifth jieraeopods are the longest, with the second 

 joint much narrower than in the preceding pairs ; the fourth joint is produced far over the 

 hind margin of the fifth, the length of its slender spine-fringed process being particularly 

 conspicuous in the new species; the fringe of pectinate spines I'ound the fifth joint is found 

 in all the species. The spine above the finger-nail is bifid only in the first gnathopods. 

 The pleopods except in the last pair have the inner plate narrowly oblong. The male stylet 

 of the second pair I have not observed. Probably, as in the other three species, and as in 

 the genus Eurydice, it is affixed near the middle of the inner margin. 



The uropods have the inner ramus shorter than the stout peduncle, twice the length of 

 the small straight outer branch, all the constituents being setose. The peduncle is much 

 larger in comparison with the inner ramus than in L. segnis. 



Length of unrolled specimen 3*5 mm., breadth 1'25 mm. 



Locality. Rotten wood in lagoon, Minikoi. 



EPICARIDEA. 



Epicarida, 1882, Sars, Fork. Selsk. Christian., No. 18, p. 18; Epicaridea, 1893, Stebbing, 

 History of Crustacea, p. 392; Bopyridae, 1895, Hansen, I sopoden . . .der Plankton- Ex p., p. 18; 

 Epicarida, 1898, Sars, Crustacea of Norway, Vol. Ii. Pt. 11, p. 193; J^picarides, 1900, Bonnier^ 

 Contr. d I'etude des £picandes les Bopyridae, p. 90. 



Of the seven families recognized by Giard and Bonnier, Sars rejects the Microniscidae, ' as. 

 only representing transitory larval stages of different Epicarida,' and combines the Cyproniscidae, 

 Cabiropsidae, and Cryptoniscidae under the last of those names. Bonnier a little later upholds 

 the Microniscidae, and distinguishes in all twelve families. 



Fam. Bopyridae. 



As this is not the place to explain the various extensions and restrictions which authors 

 have assigned to this family name, it will be sufficient to refer to the bibliographical index in 

 M. Jules Bonnier's admirable monograph, Contribution d I'etude des jSpicarides les Bopyridae. 



G. II. 92 



