The President' a Address. 
33 
The paper by Dr. Greville is a very elaborate one : it is en- 
titled a Monograph of the Genus Asterolampra, inckiding 
Asteromphalus and Spatangidium.'' The material employed for 
investigation was obtained from three very different sources; 
the first consisted of soundings from the Indian Ocean ; the 
second^ of a deposit from the United States, prepared for 
examination by Mr. E. W. Dallas ; and the third, of a 
substance known as the Monterey Stone, prepared by Pro- 
fessor Walker- Arnott. One great object of this paper is to 
point out how far the genus Spatangidium of De Brebisson 
should have been adopted in his former paper ; the species 
formerly described as belonging to this genus being consi- 
dered as strictly referable to Asterolampra or Aster omphalus. 
The paper by Mr. TufFen West is entitled " Remarks on 
some Diatomacese, new or imperfectly described, and on a new 
Desmid.^^ The sources from which the algae upon which Mr. 
West's observations have been madewere various, some of them 
being from the British coasts, others from the Mauritius and 
from the so-called Barbadoes earth. The genus Triceratium 
is the one principally mentioned ; and of this no less than 
seven species are described, and figures of each given, with 
the usual accuracy of this accomplished artist. 
Five other genera are then alluded to, and one or more 
species of each described of these genera; that of Attheya 
is new, and its species A. decora was found by Mr. Atthey 
plentifully on Cresswell Sands, in June, 1859, and in May, 
1860, in Druridge Bay. At first sight this species is con- 
sidered to resemble Striatella unipunctata in miniature ; but 
the presence of spinous processes at the angles, and the entire 
absence of stripes or attachment of any kind render the 
establishment of a new genus perfectly necessary. 
The paper of Mr. Norman, read in June, is a continua- 
tion of that brought before the Society in January, 1860. 
It is a list of the various forms of Diatomacese in the neighbour- 
hood of Hull. The genera Pinnularia, Stauroneis, Pleuro- 
sigma, Synedra, Gomphonema, Meridion, and upwards of 
thirty others, are represented each by one or more species, 
tending to show not only the richness of the locality, but 
also the zeal, activity, and powers of discernment of the 
microscopists of that town in this particular department of 
scientific inquiry. 
Volvox globator, which within the last few years has occu- 
pied so much of the attention of microscopical observers, 
has points in its history still remaining to be cleared up. 
Dr. Hicks has done much to make the matter clearer, and has 
pointed out a stage, viz., the amoeboid, in which this Protean 
