970 MR, F, A. POTS ON. 
beginning of the month the female worms had well-developed 
orange gonads. 
Size.—The almost complete individual measured was about 
5 em. long and nearly 2 mm. broad (i. e. about the same length 
as and rather broader than the two species hitherto described). 
T cannot, unfortunately, say anything about the structure of 
the head. The anterior region consists of 9 segments. In my 
specimen the 7th, 8th, and 9th segments, but particularly the 
two latter, are much longer than the others. In this particular 
the Canadian form agrees with the description of 7. bonhowuret, 
Text-figure 6. 
Ms 
| 
B (ae 
Telepsavus sp. 
A. Enlarged seta from 4th segment. X 70. 
B, C Notopodial setie from 5th segment. A lanceolate type occurring in 
H a dorsal position. X 325. 
while the figure of 7’. costarwm shows little of such a differ- 
entiation. I should like, however, to assure myself of the 
importance of this point (which is strongly emphasised by Gravier) 
on more and better material and by a comparison with specimens 
from Naples. 
In the 4th segment there is a single greatly enlarged seta 
(text-fig. 6 A), The point of this is an irregular triangle. The 
base is slightly curved and quite entire (in 7. bonhourei it is 
furnished with a fringe of projecting points). The longer of the 
outer sides is furnished with very unequal serrations. There is 
also an auxiliary bundle consisting of a few fine sete, such as 
is figured for 7. costarum, while it is expressly stated that it 
does not exist in 7’. bonhowrei. A series of types of notopodial 
setxe 1s Shown in text-fig. 7. 
