TRANSACTIONS. 
I.—The Nemertines of Millport and its Vicinity. By J. Stephenson, M.B., D.Sc. 
(Lond.) ; Major, Indian Medical Service ; Professor of Biology in the Government 
College, Lahore. Communicated by Professor D’Arcy W. THompson, C.B. (With 
One Plate.) 
(MS. received July 4, 1910. Read November 21, 1910. Issued separately May 16, 1911.) 
THE NEMERTINES OF MILLPORT AND ITs VICINITY. 
The present communication deals with the Nemertines of Millport and its vicinity, 
the study of which occupied part of the time I spent at the Millport Biological Station 
during May and June 1909. The material was not completely worked out during my 
stay there, and most of the section-cutting was left till after my return to India. I 
wish to acknowledge here the uniform courtesy and kindness which I received from 
Mr R. Exmurrst, the Superintendent of the Station, to whom my thanks are due for 
the readiness with which he placed the resources of the institution at my disposal, and 
for help in other ways. 
The number of species examined was twelve; this list is probably fairly complete 
as regards the Millport littoral forms, though I have little doubt that other species will 
be found to occur at greater depths. 
The results which I believe have been attained may be summarised as follows :— 
(1) Of the forms examined, two—an Amphiporus and a Micruwra—appear to be new; 
their descriptions are given at length. 
(2) Not less interesting has been the working over of certain species already fairly 
well known. I have not, of course, given full descriptions of these, but have contented 
myself with drawing attention to variations, which are sometimes marked, between my 
observations and the accounts of previous writers; and in a few cases I have been able 
to add facts which have escaped previous record. 
(3) It is in a consideration of the variations just alluded to that the chief value of 
the work may be found to lie. The great variability of the class is evidenced in the 
first place by my own observations; many of the forms examined are very common, 
and a large number of specimens passed under my investigation. In the second place, 
TRANS, ROY. SOC. EDIN., VOL, XLVIII, PART I. (NO. 1). dl 
