BRITISH JURASSIC GASTEROPODS. 
A Catalogue of the British —— Gasteropoda, comprising the Genera 
and Species hitherto described, with Sse to their nd ist goa cal Distribu- 
tion ons = the Localities in which they have been W. -B. 
i paves > M.A, F.R-S., P.6.8., and Edward Wilson, F.G.S.  8vo, 
+147; London, 1892. 
tie scope of this work is sufficiently described by the full title 
quoted, with the further remark that the catalogue is a critical one 
and compiled by two of the foremost living authorities. Mr. Hudleston, 
an ex-President of the Yorkshire Naturalists’ Union, is already well 
known to our readers. Some of his best known work has been 
done among the Oolites of Yorkshire and other parts of England, 
and his monograph on the Gasteropoda in course of publication by 
the Palzontographical Society is sufficient to establish his lasting - 
authority on this branch of Paleontology. His coadjutor, Mr. Wilson, 
has long been known for his work among the Liassic mollusca. 
The work now under notice includes in all a thousand species, 
besides fifteen from the Rheetic, given in an appendix. The rapid 
progress of British paleontology may be gauged by comparing this 
book with Morris’s ‘Catalogue of British Fossils’ (1854), dealing 
with the whole fossil fauna of our islands. The work of recording 
and critically valuing the many species constituted in modern memoirs 
has become a task not for one man, however able, but for specialists ee 
in the several groups, and the present instalment is a worthy contri- 
bution to the work. oe 
The practical value of such a _ catalogue to the working geologist 
depends upon its completeness, and here there seems to be nothing 
left to desire. The Yorkshire collector, for example, will find here 
every species as yet recorded from the Lias of the coast, from the : 
well-known fossiliferous beds of Blea Wyke, Cloughton Wyke, and 
‘Scarborough, the various horizons ‘in the Corallian, etc., with ce 
origi Asi 
the authors for the unsparing labour which ~~ hee bestowed = oS 
render it ection ey a 
NOTE—DIPTERA. ae 
of a fy io 
Dinters at A th.—Mr. Roebuck collected 
os Park West re on pe 22nd last, which I erimgperdta® 
oe Rhingia rostrata “7 W is not an uncommon s species, , being easily recognise¢ — 
nds c id send me any rai Ly y happen to come across 
. are oy Yonah ey they a aabegh, Yaue 26th, 
