10 Prof. M‘Intosh’s Notes from the 
with two long slender cirri. The sides have a series of 
somewhat slender lamellae for the hooks. 
The hooks (Pl. I. fig. 10) differ from any form described, 
the outline being triangular with a straight posterior border 
ending inferiorly in a process (probably for a ligament) and 
a gently curved base. ‘The anterior edge has five teeth, 
which increase in size from above downward, the gulf below 
the last being rather small, and the prow has an oblique 
front edge giving it a somewhat truncated appearance. 
Their general shape agrees with that of Melinna cristata, 
though the straight posterior outline, the number of teeth, 
and the shape of the prow diverge. 
The tube is soft (woolly in aspect), tears like soaked 
cotton, and is made up of a vast series of minute Diatoms, 
slender sponge-spicules, a few Radiolarians bound in a mass 
by the secretion of the annelid, not as usual in definite 
internal and external layers, but forming a cotton-like mass 
of a certain toughness. 
A fragmentary Oligochet, Hemitubifex benedeni*, Beddard 
(Clitellio ater, Claparéde), was procured between tide-marks 
at the East Rocks, St. Andrews, in 18638, the entire surface 
of which was densely covered with greenish papillae, but 
only the posterior region was secured. Hach segment has 
a slender tapering bristle and a stouter simple crotchet, 
hooked and tapered at the tip (Pl. I. fig. 9). In the 
preparation the posterior concavity of the hook is directed 
forward, and anteriorly the crotchets are less curved, as 
shown by comparing a posterior crochet (Pl. I. fig. 10) with 
the foregoing (fig. 9). When magnified (850) the surface 
of the cuticle resembles shagreen from the dense coating of 
the greenish papilla. The posterior region is tapered toward 
the tail, and this region has numerous thecate Infusoria of 
an elongate vase-shape attached by a pedicle. Such would 
indicate that the tail is more or less free, as in the case 
of Tubifex rivulorum. I am indebted to Dr. Beddard for 
identifying this form and aiding me with references, 
Dalzell + describes Lumbricus hirsutus as covered with 
hairs, from the coast of Fife, with a pencil of bristles in each 
segment, but this differs in colour, the anterior region being 
whitish and the posterior dull red or umber. 
* Monogr. Oligochet. p. 261 ; see also Proc. Zool. Soc, 1888, p. 485. 
+ Pow, Creat. vol. ii. p. 140. 
