ZOOLOGY. 311 
of Botany,” Mr. Phillips gives some facts respecting the employ- 
ment of tincture of iodine for this purpose. The re-agent used is 
the common tincture of iodine, diluted to one-half with alcohol. 
A drop of this is placed on a glass slide with a thin section of 
the hymenium and subjected to a slight pressure, under a mag- 
nifying power of 300-400 diameters. The blue-purple or purple- 
black color which appears in the investigation of some Pezizas, 
appears to be specifically characteristic. Thus Peziza melaloma 
S., no reaction. P. badia P., summits of asci pale blue. P. 
repanda Wahl., apices of asci blue. P. trechispora B. and Br., 
tips of paraphyses deep purple-blue. P. vitellina Pers., tips of 
_paraphyses deep purple-black. : 
. Itmay be worthy of note that owing to the blue color obtained 
in 1858, by Mr. F. Curry, in the examination of a species of Tuber, 
the name Amylocarpus yas given as a generic appellation. 
A xew Fry-rrar.— Professor A. Braun, in a communication to 
a Botanical Society, has briefly described a new form of vegetable 
fly-trap. (Botan. Zeitung, Sept. 20, 1872). The plant referred 
to is an East Indian Papilionacea, Desmodium triquetrum DC. 
The simple leaf with a margined petiole feels rough to the touch, 
and remains hanging lightly to the finger which has touched it. 
Little flies, which alight on the leaf, are held by an invisible 
power and die after ineffectual struggles to free themselves from it. 
One can often see six or eight flies fastened in this way to the 
upper surface of the blade; less often, and more widely scattered, 
on the underside. The hairs which act thus are distributed over 
the whole surface and appear to the naked eye as scarcely notice- 
able white points: they are not over 0-08-0-10 millimetres long, 
and 0-01 millimetres thick, and consist of two cells. The under 
cell is one-fourth of the whole length. The upper cell is pointed 
like a fish-hook with a sharp barb. These acute angles, invisible 
Without a lens, are what fasten the insect down. T 
Beside the angled hairs there are others on the leaf. They are 
found especially on the nerves, and have a much more appreciable 
“ength and thickness (0-50 and 0-01 millimetres), they are unicel- 
ular, blunt, and on the upper surface beset with little projections. 
: ZOOLOGY. 
: a Four-Legcep Rock Lark.— On November 23rd, while walk- 
mg on the seashore in the vicinity of Plymouth, I saw the most 
