48 Prof. M'liitosli's Notes from (h°. 



The tubes (PI. I. figs. 1 & 2) of C. hyperborea present a 

 slight curvature and taper to rather an acute point, and 

 they arc large, from 60-70 ram. in length and 8-9 mm. in 

 breadth at the wide end. They do not exhibit the ex(|uisite 

 masonry of Lngis koreni, presenting not only a ronghcr 

 external snrface, but an excess of cement hides defects in the 

 joints. The tubes, however, are firm and serviceable, and 

 all are of a dark brownish hue, pi-obably in keeping with 

 their surroundings. The smaller tubes show greater neat- 

 ness and regularity in their construction, and the cement is 

 confined to the joints — indeed, the larger tubes vary amongst 

 themselves in this respect. 



This species has a wide range, liaving been found in Spitz- 

 bergen, Finmark, and Sweden, as well as in Canada and 

 Greeidand. On tbe other baud, Cistemdes granulata, L., 

 its near ally, does not occur in Dr. Whiteaves' collections ; 

 yet it is common in Greenland, its tube (PI. I. figs. 3 

 & 4) having fewer sand-grains in a transverse row than in 

 C. hyperborea — though interesting, much weight need not be 

 attached to this feature, which depends on the size of the 

 grains. It is recognized by the comparatively few paleolaj in 

 its crown (9-10) ; a velar process a little less developed veu- 

 trally than in C. hyperborea, but with similar marginal papillae ; 

 whilst the hooks, which are not figured by Malmgren, shovv 

 three teeth, which increase in size from alcove downward as in 

 C. hyperborea ; but the process beneath them has no evident 

 spikes or they are very indistinct, and the prow below has 

 a si(nilar double curve to that of the Canadian species. In 

 this form also the anal valve (dorsal) is considerably longer 

 than in C. hyperborea or Lagis koreni, and it projects as a 

 flattened conical process beyond the ventral edge. The 

 margin of the process also is more distinctly fimbriate than 

 in the allied forms. The tube (PI. I. figs. 1 & 2) has 

 a slight curvature, and, as a rule, the grains are coarser than 

 in C. hyperborea, but the cement is neatly adjusted at the 

 opposing edges. It is tapered to a fairly fine point 

 posteriorly. 



Amongst the Amphareiidse is SabeUides borealis,S-drs, which 

 Avas not unfrequently procured off Cape Hosier Lighthouse 

 in 1871 and at Stations 35 and 36, 1873. 



The cephalic region (PL I. figs. 7 & 8) is characterized 

 by its firm shield-shaped plate, which is sloped to a hlunt 

 point in front and is sometimes pigmented. On viewing 

 the snout from the ventral surface, a series of distinct eyes 

 occurs as a band on the anterior border of the fold at the 

 base of the conical snout. Moreover, blackish pigment 



