224 | THE ZOOLOGIST. 
Tierreich,’ x. 80) gives the description and synonymy, but in- 
cludes therein the synonymy of Tubifex. Any helminthologist 
who had the two living worms side by side would instantly see 
that one was a Tubificid and the other an Enchytreid. P. 
lineatus, O. F. M., is widely distributed on the Continent. It is 
found in Denmark, Germany, and Switzerland, and is probably 
to be regarded alike as an estuarine and a freshwater form. 
Bretscher found it in fresh water in Switzerland, as I have done 
in Derbyshire, whereas Senuris lineata, Grube, is at present 
only known as estuarine. Now that the two have been dis- 
entangled it will be easy to follow up their distribution. 
7. EincHyrRmus aLBipus, Henle, is a very perplexing worm. 
This is due to the fact that different species have been confused 
under the common term. Dr. Stephenson has recently contri- 
buted some useful notes on Scottish specimens which he attri- 
butes to this species. I found specimens at Hastings, Dec. 21st, 
1911, which I think must also be placed here. The length is 
15 mm. or more when stretched, with about 65 segments. A fairly 
stout, somewhat opaque, yellowish-grey worm, with tail smaller 
than is usual in proportion to the diameter of the middle portion 
of the body. The brain is fairly large, somewhat convex behind, 
and extends into the 2nd segment. There are usually 4 sete 
in front (rarely 3), and 8 in the middle and hindmost portions 
of the body. Girdle with small glands, large pores, long ducis, 
no ventral sete, ampulla slender, about three times as long as 
broad. The spermathece are rather short, stout ducts, without 
glands or diverticula. The nerve chord is enlarged in segments 
2-3, and the dorsal vessel in one specimen seemed to arise in 
segment 15. Here, again, variations occur. One specimen was 
20-24 mm. in length, with 70 segments. The salivaries re- 
semble those of H. pellucidus, Friend. The postseptal of the 
nephridia is large, as are also the nephridiopores. 
During a visit to the North of England in February last I 
had the good fortune to find many very interesting annelids at 
Middlesborough and Gilsland. Some of these are evidently new 
to science, and I am able here to give details of two of the species. 
8. MaRrIoNINA sIALONA, n. sp.—This is the first species which 
I have as yet found possessing salivary glands. I therefore call 
it sialona, from the Greek term for saliva. The following is the 
