ii7 



2 nd — 5 th pleura is a little denticulate in the middle, for the rest the pleura are smooth. Different 

 from the preceding terga the 6 th is covered with acute granules ; the furrow near the anterior 

 border of the pleura curves backward nearly to the posterior border of the somite, the surface 

 appears almost smooth and the postero-lateral angle is produced to a spine. The telson and 

 the appendages of the 6 th somite agree with Fig. 2' of Plate XXIV, but the two postero- 

 lateral spines are curved slightly inward, not outward. The two ridges on the upper surface, 

 which is slightly furrowed longitudinally in the middle, are somewhat granular and a doublé 

 row of minute sharp granules occur between them. The caudal swimmerets are smooth, though 

 a little hairy and on each of them a longitudinal rib runs from the base down the middle; on 

 the exopodite a tracé of a second ridge is visible near the base, on the outer side of the other. 

 The small spine on the outer border of the exopodite is a little farther distant from the base 

 than from the distal end, different from the quoted figure; the basal joint is produced to a 

 spine. The abdomen is furnished above with some short fine hairs. 



The abdominal appendages of the i st somite are uniramous, very short, about 3 / 4 mm. 

 long. Those of the 4 following pairs are biramous, the two branches are slender and narrow, 

 fringed with long ciliated hairs ; all are provided with a very slender styliform stylamblys, 

 which in the 2 nd pleopod is 1,16 mm. long and 0,05 mm. broad ; it bears some cincinnuli at 

 the extremity and it is a little longer than its distance from the proximal end of the endopodite. 



The eye-peduncles are shorter than the i st joint of the antennular peduncle, quite devoid 

 of pigment, of a whitish colour and are visible from above, when they are directed laterally. 



Internal antennae 17 mm. long, almost twice as long as the rostrum; the 3 rd joint of 

 the peduncle which is 5 mm. long, is almost as long as the two other joints combined. The 

 thicker flagellum is composed of about 40 joints (1 or 2 at the extremity are wanting); the 

 i st is as long as the 4 following together, most joints are about as long as thick, the S or 9 

 last ones are slightly longer than thick. The other flagellum is composed of 39 joints, which 

 are distinctly longer than thick and of a somewhat different length. 



The external antennae are probably 80 mm. long, the flagella are not complete, having 

 lost a few joints, the longer is 68 mm. long and the peduncle, measured on its lower side, is 

 5 1 /., mm. long; looked at from above, it appears a little shorter than the antennular peduncles. 

 Like in the two other species the outer antennae are twice as long as the body. 



The external maxillipeds reach as far forward as the antennal peduncle. 



Of the larger chelipedes the right one has lost carpus and chela ; the left is 2^^ mm. 

 long, about two-thirds the length of the body. According to Alcock's description these legs 

 should differ from those of Nephropsis Stczvarti only by presenting a few additional spinules on 

 merus and carpus. These words are not in harmony with what we observe when comparing 

 this specimen with the female of Nephropsis Stewarti, described above, for the chelipeds of 

 the latter show a quite different, much stouter shape. The merus-joint is 9^ mm, 

 long and i 1 /, mm. broad in the middle of its outer surface; it carries a strong spine at the 

 end of its upper border and 4 or 5 much smaller ones behind it; there is a similar, though 

 somewhat smaller spine at the end of its lower margin and the merus is moreover covered 

 with small sharp granules, each of which tipped with a long fine hair. The carpus, 4 :i / :> mm. 



