520 BRITISH PALZOZOIC FOSSILS. [Preropopa. 
Var. B. Puzosana (de Kon.) 
Ref. and Syn. = Solenimya Puzosiana de Kon. Anim. Foss. Belg. t. 5. f. 2. 
In this variety the fine pairs of radiating lines of the typical forms of S. primeva become elevated and 
combined into thick, prominent, obtuse ridges, varying from half a line thick, with wide interspaces, to nearly a 
line wide, and with very narrow sulci. I have, however, traced all the varieties in the most gradual manner 
passing into each other, and have no doubt that M. de Koninck’s species is but an extreme variety of 
Phillips's. Some of the specimens shew the ribs thick and prominent in one part, and divided into two lines 
with a flat interspace, as in S. primeva, in another. The microscopic striation and other characters are the 
same in both. 
Position and Locality—Not uncommon in the black beds of the carboniferous limestone of Derby- 
shire; in the dark carboniferous limestone of Lowick, Northumberland; but not so common as the Var. a. 
primeva. 
Ath Class) PTEROPODA. See page 286. 
Genus. CONULARIA. See page 287. 
CONULARIA QUADRISULCATA (Miller, MSS.) 
Ref. and Syn—wre, Hist. Rutherglen, t. 20. f. 9;=Conularia quadrisulcata Sow. Min. Con. t. 260. f. 5. 
Geol. Trans. 2nd Series, Vol. V. t. 40. f. 2.=C. tubericosta Sandberger, Neues Jarhbuch fiir Min. und 
Geol. &c. 1847. t. 1. f. 12. 
Desc.—Moderately tapering, section rhomboidal ; when held with one of the obtuse lateral angles in front, 
and the apex downwards, the left face is a little smaller than the right-hand one; longitudinal furrows at 
the angles strongly marked; a delicate fissure runs down each face nearly in the centre, corresponding with 
the salient angles of the transverse plicie, of which latter it often interrupts the continuity; salient angles 
of transverse plicze 145° at about one inch from the apex, at which distance there are about three plicze 
and two intervening hollows in the space of one line; the intervening hollows nearly twice as wide as the 
ridges, and marked with coarse longitudinal strize, twice their thickness apart, which granulate the angu- 
lated ridges; apical angle of the two broad faces about 20°, of the two narrow ones about 13°. Length of rather 
small specimen one inch nine lines. 
The adult length is about two and half inches, and at that distance from the apex the transverse plicze meet 
at a more obtuse angle than is given above. There is considerable difficulty in getting the angles at which the 
lateral edges of the faces meet, from an irregular sigmoid flexure which is often present. The only certain 
specimen in the collection is so badly preserved that I cannot give the measurements of the longitudinal strie, 
nor the angles of the transverse section. If the specific name guadrisulcata be retained at all, it must, I think, 
be confined to the mountain-limestone species which now occupies us ; and to make sure of this I only quote of 
the original figures in the Mineral Conchology that one from the Bristol mountain-limestone belonging to Miller 
himself, the author of the species. The coarseness of the transverse angulated plice (or their smaller number 
in a given space at a given diameter) easily distinguishes the species from the Silurian ones. 
Position and Locality—One specimen in the collection from the carboniferous sandstone near Shap toll- 
bar, accompanied by Lepidodendra and other remains of plants. One small curved specimen from Lowick is 
possibly the young incurved tip of this same species ; its section is quadrangular, the curve being from one of the 
broad sides to the other, the tip is absent, the length about four lines, width of broad face at apex one line, at 
front two lines, width of narrow faces at front slightly less than two lines, nine ridges in one line at two lines 
from the apex. 
