REPORT ON THE SCHIZOPODA. 131 



the two preceding segmeuts taken together. It tapers toward the apex, produced as an 

 acute point. The subapical spines are of moderate size and smooth. Moreover, two 

 pairs of small denticles occur on the dorsal face of the telson. 



Theuropoda (see fig. 30) have both plates very narrow, the inner one being appreciably 

 longer than the outer, and projecting beyond the tip of the telson. 



The luminous globules agree perfectly, both in numljer and arrangement, with those 

 in Euphausia. 



Habitat. — The collection contains comparatively numerous specimens of tliis 

 interesting species, the greater part having been taken from the surface of the sea at two 

 adjacent Stations of the South Atlantic. The species also occurred in two other localities, 

 Init much less abundantly. The localities are the following : — 



The distribution of the species therefore, as yet known, would appear to be restricted 

 to the Atlantic Ocean. 



34. Nematoscelis microps, G. 0. Sars (PI. XXV. figs. 1-4). 



Nematoscclis microps, G. 0. Sars, Preliminary Notices on the Challenger Shizopoda, No. 32. 



Specific Characters. — Body somewhat more slender than in the preceding species. 

 Carapace without any lateral denticles, anterior part very slightly keeled above, rostral 

 projection straight, acute, flattened at base. Caudal segments smooth above. Ej'es 

 much smaller than in Nematoscelis megalops, cornea narrowed in the upjjer part. 

 Antennal scale projecting but slightly beyond second joint of antennular peduncle, less 

 narrow than in preceding sijecies, apex obtusely rounded. First pair of legs, when fuUy 

 extended, shorter than body, propodal joint longer than carpal, terminal joint oblong, 

 constricted at base, with about six spines, one of which is much longer than the others. 

 Telson and uropoda nearly as in Nematoscelis megalops. Length IG mm. 



Remarks. — This species may be readily distinguished from the preceding by the 

 much smaller eyes, the less elongate first pair of legs, and the form of the rostral 

 projection. It is, moreover, rather inferior in size, and also a trifle more slender. 



Description. — Only three female specimens of tins form were taken during the 

 Expedition, the largest having a length of 16 mm. 



