184 MR JAMES MURRAY ON 
contains jaws of a different type. These differences sutticiently separate the two 
species. 
The figure accompanying this description has been drawn by my friend, Mr F. R. 
Drxon-Noutratt, with his accustomed skill from my mounted specimen. 
PHILODINA FLAVICEPS, n. sp. By Davin Bryce. 
(Plate I. figs. la to If.) 
Specific characters. —Of medium size (about 320 «), and only moderately stout. 
Skin smooth. Corona rather ample (about 70 “), about one-fourth more than collar. 
Rami with 2/2 teeth. Foot of four joints, moderately stout. Spurs, short thick cones 
(about 6 » long), held nearly parallel, separated by a concave interstice (3 « wide). 
Toes four. 
This species was very abundant in washing of Lemanea (Sacheria) gathered in 
Loch Vennachar in May 1902 by Mr James Murray, and has oceurred later in 
gathermgs from other waters sent to me by him from time to time. Its distinctive 
features are the shortness and thickness of the spurs, the marked concavity of the 
interstice, and the rather ample expanse of the corona, whose width equals quite one- 
fifth of the length of the animal. Moderately grown examples might perhaps at 
first sight be taken for P. nemoralis, but attention to these details will sufficiently 
establish the identity of this species. Most of the examples seen were noticeable for 
their clear yellow tint, and especially because the colourmg was not confined to 
the trunk, or central portion of the body, but extended over the neck and head 
as far as the rostrum. This deviation from the general rule has suggested the 
specific name. 
The antenna was of moderate length, and the mastax and other organs were 
apparently normal. 
Although the animal seems to favour a habitat in open waters, specimens confined 
in a small cell showed themselves fairly hardy, and produced eggs somewhat freely for 
the first few days. These were approximately oval in outline, inclining to the Citrina 
type, the smaller pole being distinctly less obtusely rounded than the greater, and in 
one instance rising to a low knob-like promimence. One of these hatched out within 
seven days after extrusion, | observed that several adults crawling about were con- 
stricted at the third cervical segment. In confinement they soon settled down, and 
thereafter were loth to shift their quarters. Some examples seemed to remain for days 
together without changing their place. While feeding, the body was in incessant 
movement, swaying to right and to left, raising itself more or less upright, or lowering 
itself to a nearly prone position, whilst ever retaining its foothold. 
The eggs measured from 65 » to 70 « in length, and from 48 » to 54 uw 
in width. 
