26 
The Irish Naturalist, 
February, 
hence the trivial name ; they begin in segment 6, and 
number 2 to 5 in each dorsal bundle. Usually one finds 
I or 2 long and 2 to 3 short ones. The setae of the first 
segments are paired ; they are more numerous in the 
middle of the body and stouter than those at the extremities. 
The length of the bidentates fully equals one half the body 
diameter, while the capilliforms gradually diminish in length 
posteriorly — another inequality. The intestine begins with 
the sixth segment, and the coelomic corpuscles are circular 
or globular. Fission was in process. 
Habitat. — Lough Erne ; also in water at Aghaderg. Col- 
lected Whitsuntide, 1896. 
An unknown Annelid. 
Among my gleanings around Belfast in 1896 were a few 
tiny worms which I have only once found since, viz., in 
1912, at Middlesborough. They were about 10 mm. in 
length and i in diameter, looking at first very like a newly 
emerged Allolohophora rosea. The breadth was much greater 
than is usual in aquatic worms. They were so delicate that 
they either did not survive transit, or died as soon as they 
were placed on a slide in fresh water. The great peculiarity 
was the setae, which were of three kinds, one of which has 
never come under my observation in any other worms. 
In segments two to seven there were five or six sickle -shaped 
setae of quite a typical nature. Next followed palmate setae, 
which ultimately gave place to forked setae, of which there 
were only one or two in each bundle posteriorly. Two black 
eyespots gave the worm a certain resemblance to the 
Naids. The living creature was pale pink in colour, and 
had strongly developed blood vessels about the eighth or 
ninth segment, as in Clitellio and Limnodrilus. 
I should be very grateful to collectors if they could 
rediscover it. The ooze by river or estuary is the most likely 
locality. 
Popular Irish Names for Worms. 
By some means I have entirely omitted in past years 
to draw attention to this subject. But now that Dr. Scharff 
has interested us in Bird names, the matter ought to be 
touched upon. 
