ECHIUROIDEA. 
By A. E. Surprey, M.A., Fellow and Tutor of Christ’s College, Cumbridge, and 
University Lecturer in the Advanced Morphology of the Invertebrata. 
(With Plate VI.) 
THE collection of Echiuroids from Minikoi and the Maldive Islands contained few species 
and few specimens. Obviously they are shy animals and easily elude the search of the 
collector. Six species in all were found represented by some seventeen specimens. At 
Minikoi but two specimens of Thalassema diaphanes, one very small, and one specimen of 
Thal. moebii were taken. The Maldive Island specimens were, with the exception of the 
Bonetha, all taken at Hulule on the Male Atoll; they include examples of Bonellia viridis, 
Thal. diaphanes, Thal. erythrogrammon, Thal. moebii, Thal. semoni and Thal. vegrande. It 
is noticeable that all the species belong to the two genera of Echiuroids which are frequenters 
of the warm and temperate seas. The plate which accompanies this paper contains four 
coloured sketches, drawn by Mr C. Forster Cooper, accurately representing the hues of the 
living animals. 
I have not thought it worth while to take up space by repeating the lists of literature 
given in my paper “On a Collection of Echiuroids from the Loyalty Islands, New Britain 
and China Straits, with an attempt to revise the Group and to determine its Geographical 
Distribution,” published in Willey’s Zoological Results, but under each species I have given 
a reference to the page of that article, upon which the literature will be found. 
I. Genus BONELLIA Rolando. 
1. Bonellia viridis Rolando. 
Shipley. Willey’s Zoological Results, Part m1. 1899, p. 341. 
A single medium-sized specimen of a blackish green colour, very dark. 
G. 17 
