Reviews and Book Notices. 327 
MOLLUSCA. 
Arion ater var. castanea at Newsome.—On the 18th 
June last my sister drew my attention to a monstrous slug in 
our garden, which I boxed and sent to Mr. W. Denison Roebuck, 
for identification. Mr. Roebuck informs me that this slug 
was one of the finest Avion ater he had seen. It would 
stretch out to six inches and then not be fully extended. The 
variety is casfanea, for though very dark, it is not black, but 
brown. This variety of A. afer does not appear to have been 
previously recorded for the Huddersfield district.—W. E. L 
WATTAM. 
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FLOWERING PLANTS. 
Potamogeton alpinus, Balb., near Doncaster.—This 
plant is abundant in a slow stream at Sandal Beat, near Don- 
caster, in Vice-County 63, at an altitude of about 35 ft. above 
O.D. As there is no record for this species in ‘The Flora of 
the West Riding,’ it is worth noting. The plant has been 
identified by Mr. Arthur Bennett. —H. H. Corsert, Doncaster. 
—=2 @ = 
HEPATICS. 
Ricciella fluitans (Braun. ) at Mablethorpe.— While dredg- 
ing for fresh water shells in the dykes on Poplar Farm, Mable- 
thorpe, on Aug. 3rd, I brought up Recczella fluctans in plenty 
from the dyke on the north-east side of the farm, and about 
200 yards from the Theddlethorpe Road. I believe this in- 
teresting Hepatic is only recorded for one other locality in 
Lincs., in ‘‘ Transactions of the Lincs. Nat. Union,” 1906, 
in Miss S. C. Stows’ List of Lincs. Liverworts on Scotton 
Common, 29th July, 1905, J. Reeves..—F. Ruopes, Bradford, 
13th August, 1907. 
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The Fungi of Ants Nests in Ceylon has been made the subject of a 
Memoir by the Government Mycologist, Mr. T. Petch. He considers, after 
careful examination, microscopic and otherwise, of fresh specimens, the 
typical species to be a Volvaria, so that its name will stand Volvaria eurhiza 
Berk. Originally described by Mr. Berkeley in 1847, from dried specimens, 
as an Armillaria, it has been by various authors regarded as a Lentinus, 
Collybia, Pluteus, Pholiota, and Flammula. The volva is very adnate to 
the base of the stem, resembling our V. gliocephalus. The fungus grows 
from the coomb, and comes up above the ground in rainy weather. Another 
species which grows on the nest is an edible one, Enxtoloma microcarpun. 
AXylaria nigripes grows on deserted nests, while species of Mucor, Thamni- 
dium, Cephalosporium, and Peziza are developed upon the coomb after it is 
removed from the nests. The: paper is illustrated by 19 excellent plates 
from photographs, and is published in ‘Annals of the Royal Botanic Gardens, 
Peradinyia,’ November 1906, pp. 185-270. 
1907 September 1. 
