184 MARINE ZOOLOGY. 
The very beantiful Nemertean annelid, Carinella annulata, another 
of the specimens taken, has been described by Dr. McIntosh as “ one 
of the most handsome and graceful of the whole order.” It was 
about two feet in length, the snout being wider than the rest of the 
body, and bluntly rounded anteriorly. The mouth is small. It is 
eyeless, with a white patch on the snout. The rounded body, 
when living, was of a rich red colour, passing into pink, striped 
longitudinally, and banded across at intervals by white belts. The 
development of Carinella has not yet been traced, but in an allied 
genus, Lineus, Johannes Miiller, as referred to by Professor Huxley, 
(Anatomy of Invertebrated Animals, p. 186,) has shown that the ciliated 
embryo which leaves the egg is speedily converted into a body like a 
helmet with ear-lappets. The lappets are ciliated, and between them, 
where the head would fit into a helmet, is the mouth aperture, leading 
into a pouch-like alimentary cavity. Miller termed this larva Pilidiwm 
gyrans. That portion termed the Mesoblast gives rise to an elongated 
vermiform body, wherein the characteristics of a Nemertean soon appear. 
The worm on detachment carries with it the alimentary canal, the ciliated 
integument being left to perish. Professor Huxley observes ‘‘that in this 
remarkable process of development the formation of the Nemertean 
body may be compared on the one hand to that of a segmented mesoblast 
in Annelida, and on the other to that of an Echinoderm within its 
larva.” The process of contraction and elongation peculiar to individuals 
in this order is wonderful, a specimen measuring several feet being 
capable of contracting to as many inches. 
The three Nudibranchs referred to were all taken in Lamlash Bay. 
Doto coronata is a very beautiful and delicate animal. As usual, this was 
found on its favourite habitat, Plumularia falcata. Its filiform trumpet 
sheathed tentacles, and its body only half an inch in length, spotted 
all over, as well as the branchiz, with brownish purple, made it a most 
charming object viewed by the two-inch objective, the pulsations of 
the heart (about sixty per minute) being readily perceived. Doris pilosa, 
another delicate little creature, is also not more than half an inch long, 
of pale, yellowish-brown colour. The branchial plumes of pearly white, 
freckled with brown, are exceedingly beautiful. Only one specimen was 
taken. Ancula cristata, also about half an inch long, is an elegant little 
Nudibranch. Its pellucid, tapering body, which permits the viscera to be 
plainly seen within, and its laminated tentacles and branchial plumes 
tipped with bright orange-yellow, mark it as one of the most beautiful 
of a beautiful tribe. We took many specimens of the little creature. 
Although not recorded in Bryce, the late Dr. Johnston is said by Alder 
and Hancock to have taken it off Holy Island, near which it was dredged. 
One of the most interesting features of our last excursion was the 
effective display of microscopes. Under the able hands of Mr. Levick, 
Mr. Bolton, and Mr. Pumphrey, we were always sure of having any 
object of note well exhibited in the ladies’ drawing room, in the evening, 
with everyfacility that ‘‘ black back-ground” and other modes of illumi- 
nation could afford. An improved tow-net, which was specially devised 
for us by Mr. Henry Allport, was used constantly with admirable effect. 
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