Bibliographical Notice. 73 
reputed Spirifers sent to me from America by Mr. Meek :-— 
Sp. Hannibalensis (Swallow), Sp. capax (Hall), Sp. ? hemiplicatus 
(the type of a new genus Syntrilasma), all of which are unques- 
tionably perforated. On the other hand, a chip sent to me by 
Mr. Meek of a little shell which he states to be the type of Prof. 
Hall’s genus Ambocoilia (= Orthis umbonata, Con.) is as cer- 
tainly imperforate. But, after the experience above described, 
I should hesitate to pronounce on the absence of perforations in 
a shell allied to this group, except after the examination of 
several such fragments. 
. I remain, Gentlemen, 
Your obedient Servant, 
WiiraM B. Carpenter. 
University of London, June 17, 1867. 
P.S. I have to add that, having learned from Mr. Davidson that 
the typical structure of Syringothyris is exhibited by a Belgian 
shell hitherto known as Spirifer distans, I have reexamined the 
only example of this type at present accessible to me, the one 
contained in the Museum of the Royal School of Mines. So far 
as I can judge from the minute fragments of shell, not very well 
preserved, which this specimen has afforded, I should still say 
that it is imperforate. But the experience I have now acquired 
from the Millecent shells leads me strongly to desire a more 
complete investigation of this type; and I should be greatly 
obliged to any of your readers who may be able to supply me 
with well-preserved specimens of it, It does not seem impro- 
bable that the reputed Spirifer distans of Belgium, which proves 
to be truly a Syringothyris (see Davidson, loc. cit.), may be, like 
the Millecent shell, an isomorph of a true Spirifer. 
BIBLIOGRAPHICAL NOTICE. 
1. A List of the Flowering Plants, Ferns, and Mosses collected in 
the immediate neighbourhood of Andover. By C. B. Cuarke. 
Calcutta, 1866. 
2. Flora of Devon and Cornwall. By J. W.N. Keys. (Ranuncu- 
laceee—Geraniaceee.) Plymouth, 1866. 
3. The Bath Flora. A Lecture delivered to the Members of the 
Bath Natural-History and Antiquarian Field Club. By the 
Rev. L. Jenyns. Bath, 1867. : 
4. Flora of Norfolk: a Catalogue of Plants found in the County of 
Norfolk. By the Rev. K. Trimmer. London, 1866. 
Tuese four tracts on the flora of Britain have recently reached us. 
They differ considerably in intention and character, but are well 
deserving of notice. The first has the peculiarity of being a partial 
flora of a district in England, printed and published at Calcutta. 
