CHARACTERS OE THE GEHUS LOPHOPHS. 
63 
root of arm to tip of furthest tentacle, about 1 millim. Maximum 
length of tentacles (in spirit specimens) about 1 millim. 
Statoblast about *85-'95 millim. long by '7 millim. broad ; 
annulus about "22 wide at ends, about "15 millim. at sides ; cells 
of annulus about "01 to '05 millim. broad. 
Habitat. Paramatta Elver, New South Wales. 
The chief points distinguishing this species from L. crystallinus 
appear to be the absence of terminal angles to the statoblast, and 
the knobbed form of the inner end of the endocyst. The ten- 
tacles are also probably far longer than in L. crystallinus. No 
other species of the genus is known — that form assigned to it by 
Mr. Carter, from Bombay, evidently being rightly removed from 
Lophopus by Hyatt and Jullien. I have bestowed upon the 
species under notice the name of its indefatigable discoverer, 
Dr. von Lendenfeld, not only on account of his discovery, and 
of the very remarkable manner in which he has preserved the 
specimen, which shows almost all its characters as in life, but also 
in commemoration of his generosity in presenting it to the 
Natural History Museum, and in allowing me to describe a new 
form, systematically and geographically of such high interest. 
The particular specimen from which this description is drawn 
up coats some thin fasciated vegetable stems for a length of 
3j inches, but probably was much more extensive originally ; 
the mass thus formed is about 7 millim. in greatest diameter. 
The statoblasts are described from a specimen found in a dead 
colony, obtained at the same spot, which exhibits the characters 
of the ectocyst sufficiently for identification. The conditions 
under which the colonies are growing (practically covering the 
entire circumference of the object in which they rest) almost 
preclude the possibility of such approaches to locomotion as have 
been sometimes attributed to L. crystallinus ; at the same time 
their attachment to the base is very slight. The body of the 
statoblast is dark umber-brown, the annulus colourless. 
Minute Structure. — Staining with borax carmine has enabled 
me, in the excellent state of preservation of the specimen, to 
demonstrate clearly that the outermost layer of the ectocyst 
consists of substellate nucleated cells; these are most usually 
roughly oblong in shape, with the branches chiefly at the poles, 
and measure about '015-'02 by '005 millim., with a small nucleus 
and punctiform nucleolus ; but interspersed abundantly among 
them are some cells with a globular central mass about '01 millim. 
6 * 
