470 GLYCINDE NORDMANNI. 



in eighty-five to one hundred fathoms in 1867. He also procured it off North Unst in 

 ninety to ninety-five fathoms, and off Balta in fifty fathoms. In Bressay Sound it 

 occurs in eighteen fathoms. In the ' Porcupine ' Expedition of 1869 it was met with in 

 Dingle Bay, Ireland, in thirty to forty fathoms, and at Station XXXVI in 725 fathoms 

 in mud and sand. In the Expedition of 1870 it was dredged in 257 fathoms in the 

 Atlantic on a bottom of sand and at a temperature of 497°. In 110 fathoms off the 

 Blasquet (J. Gr. Jeffreys). Bay of Gralway (E. P. Wright). 



Siberian Coast (Wiren). Foreign forms like that of the 'Challenger' appear to 

 come from comparatively shallow water. 



Head (Plate LXIV, fig. 7) acutely conical, composed of ten segments, with four 

 short tentacles at the apex. At the base posteriorly are two eyes, which in some are 

 indistinct (spirit-preparations). Body about 3 — 4 ins. long, resembling that of Go?iiada, 

 tapered anteriorly and also posteriorly, where it is flattened and terminates in two 

 cirri (Plate LXIV, fig. 7 a). The surface has the same glistening aspect as in Goniada. 

 Of a pale pinkish or skin-colour in life. 



Proboscis. — In this form none of the lateral V-shaped denticles are present. At the 

 termination of the first region of the proboscis (in extrusion) is a row of papilla? (Levinsen 

 shows eighteen), which are somewhat longer than those in Goniada macidata, and just 

 within these are two larger denticles placed near each other, which show four hook- 

 like teeth, two larger and two smaller. In the preparations, the arrangement of these 

 seemed in some to differ from Malmgren's figure (Plate XI, fig. 64 b), which shows a 

 decreasing series of four teeth in lateral view ; whereas in some this was not evident 

 (Plate LXIV, figs. 7 V and 7 b"). The smaller denticles appear to number from twenty-two 

 to twenty-four, and have two prominent teeth superiorly — most having thus a bifid aspect 

 ■ — and a trifid plate inferiorly, an aperture on each side occurring at this point (Plate 

 LXIV, fig. 7 b). Levinsen (1893) gives a detailed account of the armature of the 

 proboscis with figures of the paragnathi, and these structures seem to differ from those 

 of the British form, which shows comparatively few paragnathi along the wall of the 

 organ. 



The first feet are simple and short, bifid and then trifid as they increase in length, 

 and provided with short compound bristles. At the tenth foot three long lanceolate lobes 

 occur (Plate LXXV, fig. 13), an upper, a median, and a lower. The translucent com- 

 pound bristles stretch like a fan on each side of the tip of the median lobe, the longest 

 tips being in the centre of the group, and they diminish on each side (superiorly and 

 inferiorly) . 



The thirtieth foot (Plate LXXV, fig. 13 a) has still only three divisions, but they 

 are more massive than at the tenth, and they are considerably flattened. The two groups 

 of compound bristles differ, since one (the upper) has the most conspicuously elongated 

 tips (Plate LXXXV, fig. 2b). The single spine is powerful. Between the thirtieth 

 and fiftieth feet the appendage attains greater complexity, the sixtieth (Plate LXXV, 

 fig. 13 b) presenting a dorsal division of two lobes, a spine, and a few bristles, but 

 these are often included in the tissues. This condition is evidently due to the growth 

 of a dorsal lobe on the upper process of the trifid foot, which the spine of the division 

 enters. The lower division of the foot consists of an upper long, bluntly conical 



