389 



Male rather smaller than female, but exhibiting a very similar armature 

 at the caudal segments. Anterior antennae hinged in the usual manner. Inner 

 ramus of 2nd pair of legs distinctly 3-articulate, last joint comparatively small 

 and armed outside with 2 coarse juxtaposed spines. Last pair of legs with the 

 distal joint very small, rounded oval in form, and only provided with 5 marginal 

 seta?, inner expansion of proximal joint carrying 3 subequal spines. 



Colour light yellowish grey. 



Length of adult female 0.55 mm. 



Remarks. This form somewhat resembles, as to the outward appearance, 

 A. longiremis (Brady). It is however of much smaller size, and may moreover 

 at once be distinguished by the peculiar armature of the caudal segments, a 

 character from which the specific name here proposed has been derived. In 

 the structure of the legs also some well-marked differences are found to exist. 



Occurrence. Several specimens of this form were found last summer at 

 Korshavn, south coast of Norway, in a depth of 30 40 fathoms, sandy bottom. 



Amphiaseus eonfusus, (Scott). 



(Suppl. PI. 23). 

 Stenhelia confnsa, Th. Scott, Twentieth Ann. Kep. of the Fishery Board for Scotland, p. 458, 



PI. XXII, figs. 1725. 

 Syn: Stenhelia Meeki Brady. 



Specific Characters. Female. Body slender, cylindrical in form, being 

 only very slightly tapered behind. Rostrum rather prominent, conically produced 

 and acutely pointed at the tip. Urosome not much shorter than the anterior 

 division, and hiving the last segment smaller than the preceding one. Caudal 

 rami considerably produced, exceeding in length the anal segment and sublinear 

 in form, being slightly incurved, with the outer edge sharpened, the inner thickened 

 and somewhat concaved, tip transversely truncated; apical setse of normal structure 

 and rather slender, the inner medial one about equalling in length the urosome. 

 Eye wanting. Anterior antennae resembling in structure those in A. typhlops, 

 being composed of 8 well-defined joints densely clothed with strong curved setse, 

 the first 2 joints much the largest and combined about occupying half the length 

 of the antenna. Posterior antennae and oral parts scarcely differing in their 

 structure from those parts in A. typhlops. 1st pair of legs likewise very similar, 

 having the inner ramus rather slender, with the outer 2 joints combined about 

 the length of the 1st; apical claw-like spine of this ramus very long and slender. 

 Natatory legs of almost exactly same structure as in A. typhlops. Last pair of 

 legs, however, differing in the shape of the distal joint, which is narrow conical 



