Dr. A. R. Duguid on a Species of Dolphin. 133 
I observed unaltered for months together. This, unfortunately, 
cannot be done with Spirogyre, some of which, however, I have 
been able to watch for several days before the death of the cell, 
without detecting any change of the fold. 
For this reason it 1s quite inadmissible to regard the folds of 
the cell-membrane as abortive septa, at least as long as the pro- 
duction of such a septum by the amalgamation of the central 
margins of a true fold has not been demonstrated in a single 
instance, but, on the contrary, it has rather been observed that 
incompletely developed folds occur only as accompanying an 
endogenous cell-development taking place not altogether without 
disturbance, whilst in the normal development of the latter the 
newly formed septa are unmistakeably recognizable as endo- 
genous productions. 
[To be continued. ] 
XIV .—Description of a Species of Dolphin found in the Orkney 
Islands. By Avex. R. Dueurp, M.D. 
[Plate II. ] 
For many years I have heard the fishermen in this neighbour- 
hood speak of a species of Whale, with white spots or stripes, 
which they frequently met with when in pursuit of the Phocena 
melas, or Caaing Whale. The facility with which the latter is 
driven on shore is well known: hence the specific name which 
has been applied to it by some naturalists—deductor. But of 
the capture of the former species, though frequently chased, I 
have never heard of an instance till recently. 
On the 21st of August 1858, several fishermen were pursuing 
their avocation in Scapa Bay, near Kirkwall, when, a shoal of 
whales making its appearance, al] the boats went in pursuit. 
On approaching the whales, they were discovered to be the 
spotted or streaked species; and some of the pursuers desisted 
from all further efforts, expressing their opinion, from past ex- 
perience, that it would be of no use attempting to capture them. 
Some of the boats, however, persevered, and having succeeded 
in getting a part of the shoal nearer to the beach, all again 
resumed the chase with renewed and vigorous efforts, and at last 
landed twenty small whales, which were speedily put to death 
by means of fishermen’s knives and other lethal weapons. 
I saw the whales on the evening of their capture. I knew 
them to be of a species which I had never seen before; but it 
was too dark to make an examination of them. I saw them 
again on the 23rd of August, and, having selected a specimen 
which was the least injured by the knives of the captors, I shall 
