144 Prof. M‘Intosh’s Notes from the 
Body slightly tapered anteriorly, and more distinctly so 
posteriorly. Segments numerous and somewhat narrow in 
front, the first two devoid of feet, the second being narrower 
than the first. The form is readily discriminated from its 
allies by the remarkable condition of the feet to the 34th, 
and especially from the 6th to the 24th, since they project 
much further outward than usual and, moreover, show a 
digitate arrangement of the tip in the majority. 
The proboscis has a pair of powerful curved maxille, which 
have a step externally and a contraction before the some- 
what tapered posterior region. The great dental plates have 
seven sharp recurved teeth on one side and six on the other. 
A prominent curved fang is on the end of each of the 
antero-lateral plates. From the second (posterior) lateral. 
plate a long horny band passes backward to the side of the 
great dental plate. 
The mandibles are similar to those in the Canadian form. 
The Ist foot has a short conical and vascular lobe and 
three brown spines. It bears a group of brownish winged 
tapering bristles. The second has similar spines and groups 
of brownish winged tapering bristles, which, like those of the 
lst foot, are strong. The 8rd has three black spines and 
two groups of the same bristles. The lobe of the foot is 
lanceolate. The 4th foot presents four black spines and two 
groups of similar bristles, the dorsal, as usual, being some- 
what longer. The lanceolate lobe of the foot (PI. X. fig. 25) 
is now bifid at the tip, so that it resembles a partially split 
pear. In Verrill’s N. nigripes a bifid process also occurs on 
this foot (8rd). The 5th has the separation between the 
two lobes better marked, and the upper lobe is longer, both, 
like the previous lobes, being vascular, a network of smaller 
branches connecting the larger and forming a reticulated 
central region in each lobe. The lower lobe, though shorter, 
is considerably broader than the upper. 
At the 7th foot the bristles and spmes remain the same. 
The upper lobe is larger, and the broad lower lobe has split 
into two at the tip, the upper being somewhat longer. 
The 8th foot also has three lobes, the 9th and 10th four, 
but they vary in the several specimens, some at the 9th 
having only an elongated dorsal, and a short, broad, ventral 
lobe with signs of division at the tip; whilst the 10th foot 
had but three lobes. Four lobes are found at the 15th foot, 
with similar groups of tapering bristles, and four black spines. 
Moreover, about this foot two long winged hooks make 
their appearance between the dorsal and the ventral groups 
of bristles, 
