110 LINDSAY, ON THE PROTOPHYTA OF NEW ZEALAND. 
Southern Ocean southward of Cape Horn) all the Meduse, 
Physalie, or more minute marine animalcules which it was 
possible for me to obtain. Further, I removed and preserved, 
with their contents intact, the stomachs and intestines of a 
considerable number and variety of Birds (e.g., Albatross, 
various Gulls, Cape Pigeons, Mother Cary’s chickens), and 
Fish (e.g., Dolphin, Bonito, Flying Fish) which prey on 
these or other marine animal organisms. I also collected 
masses of the “Gulf weed” in the North Atlantic “ Sar- 
gasso Sea,” with the crustacea and other marine animals in- 
habiting it; besides various other floating alge, with their 
parasites, met with at a distance from land. The result, in 
Dr. Greville’s hands, so far as concerns the specimens so 
collected and brought home, was unexpectedly and excep- 
tionally negative. 
“The bottles containing matter from the stomach and 
intestines of fish and birds, &c., were, I am sorry to say, 
perfect blanks. I examined them very carefully, and could 
not find a single diatom.”* Other collectors may confidently 
expect, however, to be more fortunate. In one of his last 
letters tome, Dr. Greville says, “I have good diatoms just 
received from the stomachs of Holothurie, Alexandria, and of 
limpets from South America,” + 
To sum up. As regardsthe New Zealand Diatomacee, it 
thus appears, 1. That only a few terrestrial or freshwater 
forms are yet known; while 2. Marine species and fossilt forms 
* Letter, dated July 6th, 1863. 
+ Letter, dated March 5th, 1866. 
{ The only record of fossi/ species with which I am acquainted is that 
given by the late Dr. Mantell, ia a paper on New Zealand Fossils, in the 
* Quarterly Journal of the Geological Society of London,’ for August, 1850, 
vol. vi, p. 332, pl. xxix. There seems, however, to be therein a certain con- 
fusion of Diatomacee with what are now regarded as Desmidiacee and 
Foraminifera. The so-called * Infusorial earth’’ of Taranaki and Canterbury, 
referred to by him (which resembles magnesia in appearance, and was 
actually exported at one time as Native Carbonate of Magnesia !), was found 
to consist mainly of species of the following genera of Diatoms: 
Eunotia (EB. ocellata, Ehrb. A British and European existing form, 
Rabenhorst). 
Nuvicula (N. librile, Ehrb., which occurs—also in the fossil state—in 
North America). 
Stauroneis (S. Zelandica, Mantell). 
Surirella, Pyzidicula. Cocconema. 
Synedra. Podosira. Coscinodiscus. 
Pinnularia Actinocychus. Bacillaria. 
Gomphonema. Melosira (including the old genus Gallionella), 
A careful examination by Prof. Rupert Jones of a suite of Tertiary Fora- 
miniferous limestones, sandstones, and mudstones, collected by me in the 
vicinity of Dunedin, Otago, curiously enough proved negative in its results 
—no Diatomacee whatever having been discovered. 
