226 J. F. Whiteaves—Primordial Fossils from Newfoundland. 
Mr. Hartt the posterior angles of the cephalic shield of I 
Dawsoni bear “backward projecting spines,” the glabella is 
described as “conical and pointed behind” but not spinous, 
and the middle lobe or axis of the tail as divided into six seg- 
ments. The figure of the head of this trilobite, in the ‘“ Acadian 
Geology,” is defective and does not show the lateral spines. 
5. Conocephalites tener Hartt. Two heads of this easily recog- 
nized and well characterized form. 
. Conocephalites Baileyi Hartt. A single head, with an un- 
usually small glabella. 
7. Conocephalites Orestes? Hartt. Abundant, but badly pre- 
served and hence the doubt as to the correct identification of 
the species. The facial sutures of Nos. 5,6 and 7 being un- 
known their generic position is of course uncertain. 
8. Parudoxides (sp. undt.). Fragments only. 
os. 1, 8, 4, 5, 6 and possibly 7 are common to the Primordial 
slates of St. John, N. B., and to the shales of Manuel’s Brook. 
The shales of Kelly’s Island, in Conception Bay, hold quan- 
tities of a small Zingula which appears to be undescribed and 
which may be briefly characterized thus: 
Lingula Billingsiana, n. sp. Shell small, very slightly con- 
vex, compressed at the sides: outline elliptic ovate, narrowest 
behind: length nearly twice the width: margin of the valves 
widening convexly and gradually from the beaks to the center, 
or a little beyond it: front narrowly and evenly rounded. 
Surface ciate by fine concentric striations and faint radiating 
ines. Internal markings unknown. Length, about two lines 
and a half: width one line and a half. 
This little shell, which may be the young of some larger spe- 
cies, is somewhat similar in shape and size to the Lingula minima 
of Sowerby, from the Upper Ludlow rocks of Great Britain. 
The two shells, however, belong to very different geological 
horizons, and besides this, L. Billingsiana is much narrower 
posteriorly than ZL. mznima and not nearly so square in front. 
From Mr. Murray’s report already quoted it would appear 
that the shales of Relly's Island are not quite so old as those 
of Manuel’s Brook, but that they are older than the Menevian 
sandstones of Great Bell Island. 
