70 Notes and Comments. 
BRITISH TUNICATA.* 
The Ray Society is well known for the excellence of the 
work it accomplishes in connection with its memoirs relating 
to the more neglected branches of natural History. In recent 
years these have been produced with remarkable regularity, 
largely as a result of the energy of the society’s honorary 
secretary, Mr. John Hopkinson, who, it need hardly be said, 
is a Yorkshireman. Its latest publication is vol. 2 of ‘ British 
Tunicata,’ an unfinished monograph, by the late Joshua Alder 
and the late Albany Hancock, which should be of particular 
interest to northern naturalists. Mr. Hopkinson has edited 
the memoir, and, with the addition of a wealth of beautiful 
plates, has produced a handsome and useful volume, the first 
part of the work having been issued two years ago. Of 
additional interest is an account of the life of Alder, by the 
Rev. Canon Norman, and the life of Hancock, by Dr. D. 
Embleton, with an addendum by Canon Norman. A portrait 
of Hancock appears as frontispiece to the volume. 
THE ILLUSTRATIONS. 
To the plates, too much praise cannot be given; they are 
such as will be of the very greatest service to students of this 
neglected order. In addition there are numerous illustrations 
in the text. Both sets of illustrations are photographically 
reproduced from the drawings of Alder and Hancock, under 
the supervision of Mr. Hopkinson. By the courtesy of the 
society and its editor, we are able to present our readers with 
one of the plates (plate XV.), which will speak more for their 
excellence than will any words of ours. Some of the speci- 
mens will probably be familiar ta those who are in the habit 
of collecting amongst the flotsam and jetsam of our coasts. 
On the plate—Figs. 1-4=Styelopsis grossularia (Van Ben.) 
Traust.: 1, a group, natural size; 2, a single individual from 
this group, twice natural size; 3, an individual, probably a 
variety of this species, with a young one attached, three times 
natural size; 4, the same, natural size. Fig. 5=Styelopszs 
glomerata (Alder): a cluster, natural size. Figs. 6-8= Thyla- 
cium aggregatum (Rathke) V. Carus: 6, a group, one half natural 
size ; 7, a single individual, natural size; 8, a group, probably 
a variety of this species, of the size and form of var. maculatum, 
El 
* xxviii. + 164 pp. and 50 plates, 1907. Issued to the members of the 
Ray Society for 1906. 25/- net. 
Naturajist, 
