100 GODFREY—NOTES ON THE ANIMAL LIFE 
curious tenants of the houses may be mentioned a tiny phasmid 
noticed on one of the plants in the autumn of 1904. 
The real difficulties connected with the study of these exotic 
forms arise from the inability of determining with accuracy the 
place of origin of the different species, and from the trouble 
experienced in getting into touch with specialists in the various 
branches represented by the different creatures. Yet, in con- 
nection with the shells and the ants at least, we have achieved 
some success, and we venture to think that a few notes regarding 
these branches of natural history as exhibited in the hothouses 
may not be unwelcome to those who have hitherto regarded 
these buildings as strictly reserved for plants. 
SHELLS. 
Of shells, we make out at present seven exotic species, 
exclusive of the possibly imported but genuinely British 
Ceciliotdes acicula, Miiller,a dead specimen of which was found 
_ on the under side of a brick in the old Fern-house, on February 
28, 1905. 
Stenogyra goodallii, Miller—A very common hothouse 
species, Stenogyra goodalliz, Miller,a transparent white turreted 
shell, flourishes in the side pots in the hotter portion of the 
alm-house, where we noticed it first on June 9, 1904. 
Hyalinia cantabrica, Westerl.—In the old Fern-house, where 
Cecilioides occurred, a large dark Hyalinia used to thrive among 
the gravel covering the various platforms, and probably stil] 
exists in the new locality to which the gravel has been removed. 
This has been identified by Mr. G. K. Gude as Hyalinia canta- 
brica, Westerl., a native of Spain. A second species of Hyalinia, 
small and delicate, from a different hothouse, cannot be deter- 
mined at present. | 
_Zonitoides minusculus, Binn.— Much smaller than this last- 
mentioned shell is a white helicoid species, which Mr. Gude 
thinks may be Zonitoides minuscudus, Binn., a native of the 
United States of America and of Japan. 
