I lO 



transverse groove, so that the narrow median ridge is bounded on each side by a furrow; this 

 intersection does not exist on the 4"' tergum of Nephr. arafuraisis, but the median part of 

 the anterior band, between the two obhque grooves, carries on each side 4 or 5 small pubescent 

 impressions and a few exist also on the lateral parts of the tergum. Two or three large puncta 

 occur also, on each side of the middle, on the anterior band of the 2"<^ and 3'''^ terga, the 

 terga are moreover finely punctate in the middle, more coarsely laterally, while the grooves 

 are pubescent; we must still remark that a transverse, granular ridge runs in the transverse 

 groove between the two bands parallel with the latter, rather distinctly on the 2°'' tergum, less 

 so on the two following. 



The pleura of the 2°=^, 3"^ and 4"^ somites resemble those of Ncphr. Sibogae, their margins 

 are, however, more distinctly serrate, the cavities or pits on their upper surface are deeper, 

 especially near the pointed, acute, lovv^er. angle, their granulation is coarser and one observes 

 a small spinule on the middle of the pleura of the 2°"^ somite; the cavities and pits are hairy. 



The eye-peduncles and both pairs of antennae resemble those of Ncphr. Sibogat\ even 

 in minute particulars. The internal antennae are 45 mm. long, just twice as long as the rostrum 

 and the basal joint of their peduncle bears likewise a small spinule at the distal end of their 

 inner border. The antennal peduncle re.sembles closely that oi Ncphr. Sibogae\ the scaphocerite 

 is triangular, narrow at its base, rounded anteriorly, has probably a small spinule at the distal 

 end of the outer border and is /^j mm. long and 5Y2 mm. broad. 



The external maxillipeds which just project beyond the antennal peduncles, also not differ 

 from those of Ncphr. Sibogae \ the lower margin of the ischium is finely serrate and terminates 

 at the distal end in a small spinule, that of the merus is armed with 7 or 8 spines, the fore- 

 most of which is the largest and there is also a small tooth at the far end of the carpus. 



The thoracic legs of the 2"'' — 5''^ pair resemble likewise those of Ncphr. Sibogae and 

 this is also the case with the pleopods. 



Nephropsis W.-Mas. 



The genus Nephropsis W.-Mas., at first sight distinguished from Ncphrops by the absence 

 of an antennal scale and by the obsolescent eyes, is represented by 8 species, most of which 

 occur in the Indopacific. Nephropsis atlantica, described in 1882 by C.\non Norman from a 

 single specimen taken by the "Knight Errant" off the North of Scotland, has also been captured 

 in the Faroe Channel, off the South-West coast of Ireland and occurs also in the Gulf of 

 Gascony, but this species has afterwards been observed not only at Cape Natal, .South Africa, 

 but even in the Arabian Sea near the Laccadives and to the northwards, so that it proves to 

 be more widely distributed than any other species of this genus. Nephropsis Agassizii A. M.-Edw. = 

 acuicafa S. J. Smith inhabits the coasts of Florida, the Bermudas and the South coast of New 

 England; this species is considered by Wood-M.-\son and Alcock to be identical wkh Nephropsis 

 Stezvarti W.-Mas. N^cpliropsis rosea Willem.-Suhm, captured by the "Challenger" off Bermuda, 

 was considered by Spence Bate as probably identical with Nephropsis Agassizii, while both 

 forms were indeed identified by Walter F.a.xon. Nephropsis occidcntalis Fax., a species likewise 



