Report on the Cirripedia Pedunculata collected 
by Dr. Th. Mortensen in the Gulf of Siam. 
By 
N. Annandale, D. Sc., Indian Museum, Calcutta. 
So far as I am aware, only three species of Cirripedia Pedun- 
culata have as yet been recorded from the Gulf of Siam, viz., 
those collected by Dr. R. Evans on the coast of Patani, of 
Kelantan and Trengannu in 1899: — Lepas anserifera, Linné, 
Dichelaspis occlusa, Lanchester (= D. tridens (C. W. Aurivillius)), 
and D. equina, Lanchester ( D. warwickii (Gray)). These species 
were recorded by Lanchester in the Proceedings of the Zoological 
Society of London for 1902, vol. ii, pp. 372—377. Dr. Morten- 
sen's collection, for the opportunity of examining which I have 
to thank both him and Dr. H. J. Hansen, includes specimens 
not only of these three species, but also of six others, notably 
of a primitive form of Scalpellum (S. kampeni) recently described 
from neighbouring seas. 
Fam. Pollicipedidæ. 
Pollicipes mitella (Linn.). 
Several specimens from Koh Lom (w. of Koh Chang), Gulf of 
Siam, collected 9—iii—1900. 
The species is widely distributed in the warmer parts of the 
Indian and Pacific Oceans but has not yet been found in the seas 
of British India. 
Vidensk. Meddel, fra den naturh. Foren, 1910. 
