170 Prof. M‘Intosh’s Notes from the 
papille over the surface. The stout shafts of the bristles 
have numerous spikes on the distal convexity. The terminal 
piece is short and falcate and the edge is spinous. The 
ventral cirrus is short and tapering. 
The proboscis forms a short muscular organ, with teeth, as 
in the Sigalionidx, biting to the left, and nine short but 
distinct papillee along each arch. Moreover, in extrusion two 
papilla are situated just behind the lateral furrow separating 
the dorsal and ventral arches. A median and two lateral 
elevations are also present in the basal region dorsally. 
Thus far there are few divergencies; but when we come to 
the condition of the scales in the several races, such variations 
occur as have been thought worthy of specific distinction by 
several authors. Yet the gradations from the Arctic to the 
southern form appear to be of such a nature that it is deemed 
prudent to adhere to the decision already mentioned, viz. to 
make only one species. 
In the variety cnornata of Dr. George Johnston the first 
pair of scales are somewhat rounded, as if an isosceles triangle 
had its corners smoothly removed. The scar for the elytro- 
phore is situated nearer the posterior than the anterior border. 
The latter has numerous short clavate cilia along its edge to 
the number of about 15, while the posterior margin has about 
9 larger cilia, somewhat moniliform in outline—from constric- 
tions. The surface of the scale anteriorly has also a row of 
cilia running within those on the border, and, besides, a few 
are scattered over the area in front of the scar. All the 
cilia have traces of palpocils at the tip. Only the inner 
border of the scale is thus smooth. 
In contrast with the first scale of the typical Pholoé minuta, 
Fabr., from Greenland, the foregoing has fewer cilia. ‘Thus 
there are upwards of 40 along the anterior border of the 
Arctic form and 12 proportionally shorter cilia than in the 
var. ¢nornata along the posterior edge. Moreover, these 
organs are more numerous on the surface in front of the sear. 
The shape in the second pair in var. ¢nornata becomes 
transversely elongated, with an anterior incurvation. ‘The 
moniliform cilia along the posterior edge are more numerous, 
while the smaller cilia on the outer edge are fewer, and the 
same may be said of those on the surface. 
The succeeding scales are irregularly rounded and have a 
somewhat straight external border, which has moniliform cilia, 
while those along the posterior border are few and widely 
separated. ‘The scale is areolated, especially towards its 
inner border, which, along with the anterior edge, is smooth. 
In comparing the large broad anterior scales with those 
