336 PSEUDOOLYMBNE QUADRILOBATA. 



Synonyms. 

 1906. Eeteroclymene robusta, Arwidsson. Stand, n. arktisch. Maldan., p. 227, Taf. v, fig. 171, Taf. x 



figs. 318—320, Taf. xii, figs. 371—372. 

 1911. „ „ idem. Proc. Roy. Irish Acad., vol. xxxix, p. 224. 



1913. „ ?AB, Mcintosh. Ann. Nat. Hist., ser. 8, vol. xi, p. 117. 



» „ robusta, Nolte. Wiss. Meeresuntersuch., n.f., Bd. xv, p. 51, Taf. i, figs. 



19—21. 

 u v ,> Southern. Proc. Roy. Irish Acad. ; vol. xxxi, no. 47, p. 135. 



Habitat. — Ballynakill Harbour (Southern). Off Cape Monday. Norway (Arwidsson). 



A beautifully-formed anal funnel (Plate C, fig. 23) with only a fragment of the body, 

 without the bristles, was dredged in 100 fathoms, 30 miles west of Cape Monday, in the 

 ' Porcupine ' Expedition of 1870. It is comparatively large, measuring 4*5 mm. in 

 diameter. Viewed laterally it resembles an elegant urn in miniature, with the ventral 

 ridge passing up to its edge and to the longest and largest cirrus. The free edge is 

 neatly cut into minute, rigid, conical cirri, except in the case of three, which are subulate 

 and longer. Two of these are symmetrically placed — four short cirri separating each 

 from the long ventral cirrus, whilst on the right five short cirri separate the odd long 

 cirrus from that adjoining. The total number of cirri is fifty-nine, and of these, as 

 indicated, only four are long. The distal cavity is shallow, a fine series of grooves 

 radiating from the central anus to the spaces between the cirri. The ring from which 

 the funnel arises is rounded and only moderately prominent, whilst externally the wall 

 of the funnel is quite smooth. The winged bristles (Plate CIX, fig. 4) are somewhat 

 stout, w^ith rather sharp tips, and there are also spinous forms. The hooks (Plate CIX, 

 fig. 4 a) present a peculiar crown with seven teeth above the great fang, which comes 

 off at more than a right angle, and the gular bristles have no basal enlargement. 1 



Genus CXXVI. — Psetjdoclymene, Arwidsson, 1906. 



The nuchal grooves very short ; distinct cephalic rim. The proboscis without papillge. 

 Cephalic lobe slightly glandular. No collar. The feet of the eighth bristled segment are 

 in front of the middle. The naked segments posteriorly are short, followed by a short, 

 saucer-shaped, terminal one. Anal cirri small, the ventral longest, and the others somewhat 

 irregular. The anal cone short, directed toward the base of the cirrus. Anal " sucker " 

 distinct. The anterior segments with conspicuous glandular belts. The crotchets of 

 segments 1 to 3 are much changed. The shaft of the succeeding hooked bristles gently 

 curved with hairs on the throat. The anterior bristles with broad wings and distinct hair- 

 pencils. The posterior bristles furnished with fine spikes at the tip. Tube free and 

 straight, somewhat thin (Arwidsson). 



1. Pseudocltmene quadrilobata, Sars, 1856. Plate CVIII, figs. 10 and 10 a — bristle and 

 hook; Plate CIX, fig. 5 — spine; Plate CXI, fig. 6— head. 



Specific Characters. — The ovoid cephalic plate has a prominent lateral margin on each 

 side of the small mid-frontal process, indeed the margin is conspicuous all round, and a 



1 This form can only be briefly indicated at present. 



