176 Prof. M‘Intosh’s Notes from the 
wise has several clavate papille similarly ciliated (Pl. III. 
fig. 1), and its bristles are characterized by their strength and 
the shortness of the terminal pieces. The shafts of the 
bristles, moreover, diminish in strength from above down- 
wards, as seen by contrasting the second upper bristle (Pl. IIT. 
fig. 2) and the adjoining series (Pl. III. fig. 3) with that 
from the inferior series (Pl. III. fig. 4), those at the 
ventral edge being less than half the diameter of the upper. 
The rows of spikes on the distal convexity of the shafts like- 
wise decrease in number from above downwards. ‘The stout 
superior bristles have terminal pieces of two or three divisions 
and a well-marked claw and secondary process at the tip. 
Towards the inferior edge the terminal pieces lengthen, and 
three divisions are present, the tips of all being bifid. 
The specimens, which were captured in July, were laden 
with large ova. 
In his list of the Annelids of the “ Osterfjorden” Dr. Ap- 
pelléf * includes Sthenelats atlantica, McI.t ; but this species, 
while approaching the Norwegian in regard to the scales, 
wholly diverges, for instance, in the minute structure of the 
bristles in the ventral division of the foot. 
The other species—Sthenelats heterocheta—has a similar 
range in depth, viz. from 40 to 180 fathoms. 
The head is somewhat rounded, with prominent lateral 
lobes separated by an a-shaped central region, eyeless in the 
preparations. ‘The median tentacle arises from the anterior 
border, is proportionally larger and longer than in Sthenelais 
Kimicola, and ends in a filiform tip. The lateral tentacles are 
considerably shorter, but also have an attenuate tip. The 
superior tentacular cirrus is about the length of the median 
tentacle, but the ventral is considerably shorter. The ciliated 
process (‘cuilleron,”’ Pruvot and facovitza) is tongue- 
shaped. ‘The palpi are even longer and more tapered than 
in S. limicola. The first foot (having the foregoing pro- 
cesses) presents a prominent ctenidium dorsally. 
The body is larger than in S. lémicola and apparently 
longer, but no example is complete, though more than 100 
segments are present in the most perfect, which wants a con- 
siderable portion of the tail. It is rounded dorsally, flattened 
ventrally, and is covered by the translucent scales and 
gently tapered towards the posterior end. <A nephridial 
eminence is present, but no papilla. The proboscis has two 
oblique dorsal ridges starting from within outwards at the 
commencement of the distal fourth, and traces of similar 
* Bergens Museum Aarbog, no, xiii. p. 10. 
t+ Trans, Zool, Soc. ix. p. 4085. 
