i8o 
The Irish Naturalist 
August, 
Enchytraeus sabulosus^ n. sp. 
I found numerous examples of the worm, among other 
Enchytraeids, on Sandymount strand, Dublin Bay. It lives 
under stones, and amongst the gravel at high-water mark 
{sabulum, gravel ; sabiilosus^ gravelly). It was in company 
with Erichytrmis albidus, to which worm it is most nearly 
related, so I was able to compare it closely with the latter, 
before deciding that it was new. 
Enchytraeus sabulosus is a delicate, milky worm, with colour- 
less blood. It is 10-15 mm. long, and •25--5 mm. thick. The 
number of segments is about 45-48. The set^s are of equal 
length, slightly thicker in the middle and hooked at the 
internal end. (Fig. i). There are usually three setae in each 
bundle, but never more, sometimes two only. The number 
is very constant, and serves to distinguish this species from 
RyichytrcBus albidiis, which alwa3\s has at least four setae in 
some bundles. 
The brai7i is about twice as broad as long, and its sides are 
almost parallel. Its posterior border is straight, or slightly 
concave. (Fig. 2). 
The epidermis shows several very faint rows of glands on each 
segment. The clUelluvi occupies segments 12 and 13. It is 
not so glandular and conspicuous as that of Enchytrceus albidus. 
There are three pairs of septal glands in segments 5, 6, and 
7. The first and second pairs are simple, but the third pair 
are bilobed. (Fig. 3, c, e, f.) 
The salivary glands (Fig. 3, b) arise fiom the sides of the 
oesophagus just behind the pharynx. They are of consider- 
able length, twisted and wrinkled, but unbranched, and of the 
same diameter throughout. 
The alirne7itary canal, behind the pharynx, and, except in 
the clitellar region, is thickly coated with large peritoneal 
cells, which are full of oil drops. (Fig. 4, b). This character is 
somewhat variable. In some casv^.s the peritoneal cells were 
almost as conspicuous as in Erichytrceus Bncholzii, whilst in 
others, they hardly exceeded those of Enehyt?'esus albidus in size. 
There is a small dorsal pore present, between the prostomium 
and the first body-segment. The dorsal vessel rises between 
the 1 6th and 17th segments. (Fig. 4, a.). 
