ECHINODERMATA OF THE L.M.B.C. DISTRICT. 53 
esculentus on the shore, within two hundred yards of 
Beaumaris pier, at times when the tide has been excep- 
tionally low; and from the deeper parts of Beaumaris Bay 
I have frequently dredged specimens of Echinus miliaris 
of much larger size than those recorded by Prof. Herdman. 
A number of very fine specimens of Spatangus purpureus, 
some of them measuring 11 cm. across their longer 
diameter, were dredged from a depth of 25 fathoms, 
twenty miles 8... of the Isle of Man, during the cruise 
of the ‘‘ Weathercock,” in the summer of 1886, while 
others were obtained off Red Wharf Bay, during the 
‘“‘ Hysena’’ expedition of the same year. 
HOLOTHUROIDEA. 
The Holothurians submitted to me are referable to three 
species. Of these Thyonidium drummondii and Cucumaria 
hyndmanni were recorded in Prof. Herdman’s first Report, 
and are represented in the present collection, the former 
by one specimen from the neighbourhood of Puffin Island, 
and one from the ‘‘Hysena’’ expedition of 1886; the 
latter by three specimens taken from a depth of 20 fathoms 
about twenty miles S.E. of the Isle of Man, during the 
cruise of the ‘* Weathercock,”’ in the summer of 1886. 
The third species is well represented, and has, the Rey. 
Canon A. M. Norman informs me, been mistaken by several 
British authors, and was mistaken by myself, for Cucu- 
maria pentactes, a form which it very closely resembles. 
Dr. Norman, however, identifies it as the Cucumaria planci 
of Marenzeller.* It is now, I believe, recorded for the 
first time under its correct name as a British species.+ 
It occurs in considerable numbers in the deep waters 
surrounding Puffin Island to the north-east. 
* Abh. zool-bot. Ges. Wien, xxiv. (1874), p. 300. 
+ Prof. Jetlrey Bell writes to Prof. Herdman that he has seen specimens 
from the south coast of England and the west of Scotland. 
