Saccharomyces anomalies (. Hansen ). 237 
a complete comparison impossible, and conclusions as to the 
identity or relationship of the Yeasts can only be surmised, 
though they are extremely probable. It does seem probable, 
however, that there are differences between some of the forms, 
at least as great as there are between the different varieties 
included in the species, S. cerevisiae or in .S'. Pastorianus. 
It is interesting to note the wide distribution of these forms, 
some having been found in Japan, others in various parts 
of Europe, while quite possibly the form described in this 
paper is a West Indian form, the ginger on which it was 
found having come from Jamaica. Their wide distribution 
alone would lead one to expect considerable variety in their 
characters. The most satisfactory way of grouping them 
seems to be the inclusion of each form in the species .S. ano- 
malus ; this species to have as its distinguishing characters the 
Mycoderma- like habit and the hat-shaped spores; and the sub¬ 
division of this species into varieties according to the behaviour 
of the Yeast in such points as the power of fermenting the 
various carbohydrates, the usual number of spores produced, 
the nature and rate of production of primary films, the 
occurrence and appearance of secondary films, the power of 
liquefaction of gelatine, the production of fruit-ethers 1 , &c. 
The species would then have the same significance and would 
show a similar amount of diversity among its members, and 
yet be just as well defined as the better known species of 
Saccharomyces , such as 5 . cerevisiae and 5 . Pastorianus. 
On the Question of Relationship between 
S. ANOMALUS AND ENDOMYCES DECIPIENS. 
In the paper by Hansen ( 1 ) quoted above it will be noticed 
that he draws attention to the possibility of genetic connexion 
between S. anomalus and Endomyces decipiens , on account 
of the similarity in shape of the spores of the two species, 
bearing in mind at the same time the position held by the 
latter as one of the simplest types of the group Exoasci and 
1 Beyerinck (21) describes other species of Yeast which produce fragrant fruit- 
ethers, S.fragrans and S. acetaethylicus, apparently quite distinct from S. anomalus. 
