ANNELIDA. 
109 
Order Nemertinea. 
Suborder ENOPLA. 
Proboscis furnished with stylets. 
Fam. 1. Amphiporidse. 
Subfamily A mpiiipokinjs. 
Proboscis proportionally large. 
Genus 1. Amphiporus, Ehrenberg. 
Amphiporus lactijloreus, Johnst. McIntosh, Brit. Annel. 
(Ray Society), i. p. 156, pi. 1. f. 1 & 2. 
Common under stones between tide-marks. 
Amphiporus pulcher (O. F. Muller), Johnst. Op. cit. p. 158, 
pi. 1. f. 3. 
Frequent in the coralline ground in crevices of shells. A 
very large, though fragmentary, specimen appears to be this 
species (Plate IV. fig. 3). It was found by its artist on 
the West Sands after a severe storm in March. The pro¬ 
boscis is extruded, and the tip of the snout forms a kind 
of button, which, however, may be due to the condition of 
the parts ; the oesophageal region protrudes as a rugose disk 
on the ventral surface near the tip. A reddish line along 
the body is peculiar, and is probably the nerve-cord, since 
no vivid colouring has been seen in the vessels of ordinary 
specimens. The dull greyish coloration of the body is also 
peculiar, and may be partly owing to the brownish-red ova 
shining through the other tissues, or to alimentary material. 
The posterior end of the specimen shows the pinkish elements 
of the digestive chamber and ova. 
Genus 2. Tetrastemma, Ehrenberg. 
Tetrastemma melanocephala, Johnst. Op. cit. p. 165, pi. 2. f. 1. 
Not rare amongst the roots of seaweeds on stones near low- 
water mark. 
