276 
HUGHES : INGLEBOROUGH. 
Chonetes hardrensis (Phil].). 
Athyris Roysii (I'Ev.). 
Piima. 
Actinoceras Breynii (Mart.). 
Froducta striata is especially common in certain beds on 
Sulber, near the top of the Great Scar Limestone. 
(^n the highest part of these terraces we find, here and 
there, a patch left of the dark grey impure limestone, which 
forms the passage bed up into the black rocks, which are some- 
times known as the Gayle Limestone. In these passage beds 
the same species of Phillipsia and Griffithides occur as are found 
more plentifully at the same horizon in Flint ergill, just above 
the old Vicarage of Dent. 
The Black Marble axd Shale y LmESTOXE. 
Between the contours of 1,300 and 1,350 the grey lime- 
stone has been all traversed, and there is probably a thin bed 
of shale which is now covered by drift and tumble between it 
(i.e., the grey limestone) and the black shaley limestone (/ and 
g of Fig. 4). But at the bend of the stream, 400 yards south- 
east of the Shooting Box, the water falls over several ledges 
in which the black limestone is well exposed (see Fig. 4), and 
in some thin, nodular, clayey beds much undercut, below the 
lowest fall. Producta gigaiitea* occurs in abundance. With it 
are found Producta hemispherica and corals belonging to the 
genera Lithostrotion, Cyclophyllum, Zaphrentis, Lonsdaleia, &c. 
*I follow Jukes in the spelling of these words : — " A fashion," says he, 
" has lately crept in of calling this Productus. It seems to me we might 
as well speak of a Terebratulus, an Atrypus, or a Rhynchonellus. Where 
a Latin adjective is employed as a name of a bivalve shell, it should always 
be made to agree with Concha or Cochlea understood, and only have a 
masculine or neuter termination when a substantive is used as Pentamerus. 
The shell was originally called Anomia producta and afterwards Producta 
alone ; why not let it remain so ? " Of course Jukes' remarks apply also 
to words of Greek origin which we use in a Latin form. — A Student's 
Manual of Geology, 2nd Edition, 1862, p. 53o. 
In respect of the use of capital letters in specific names, I follow 
the advice of ]Mr. Cowper Reed in the Sedgwick Museum. \Mien the 
genitive of the substantive proper name is employed, we use a capital 
initial, but, when the specific name is an adjective derived from the 
proper name, we write it with a small initial letter. 
