ENDOCERATIDiE. 
145 
Horizon. Limestone ( = Arenig). 
Locality. KinnekuUe Hill (Westrogothia), Sweden. 
One good example, presented by J. E. Lee, Esq., F.S.A., F.G.S. 
Endoceras Reinhardi?, Boll, sp. 
1857. Orthoceras Reinhardi, Boll, Beitrag ziir Kenntniss der Siliir. 
Ceph., in Arcbiv fiir die Xaturkunde von Mecklenburg, p. 13, Taf. 
ii. ff. 5 a, 5 b. 
1860. Endoceras remotum, Eichwald, Letbsea Rossica, vol. i. Seconde 
Section de I’ancienne Periode, p. 1250, pi. li. f. 24. 
? 1880. Orthoceras commune, Angelin-Lindstroin, Fraginenta Silurica, 
p. 1, tab. iii. ff. 7, 8. 
Sp. Char. Shell straight, increasing very slowly in diameter. 
Section circular. Septa very remote, being distant nearly half the 
diameter of the shell. Siphnncle nearly marginal ; its diameter 
about 4 that of the shell. Surface of the outer shell probably 
smooth, but the inner shell-layer, according to Boll, is ornamented 
with close-set wrinkles, of hair-like fineness. 
Remarks. Boll observes that his species is easily recognizable by 
its form and size, but in its fragmentary condition (he figures only 
four chambers) it allows of no complete diagnosis. 
I entertain very little doubt about this species being identical 
with E. remotum, Eichw., the only difference between the two con- 
sisting in the compression of the latter, which may be accidental. 
The siphuuclo appears, judging from the figures, to be (juite as near 
the margin in the one species as it is in the other, though Eichwald 
states that its position in E. remotum is not quite marginal. I can- 
not myself find sufficient ground for separating the two species. In 
the distance of the septa and proportions of the siphuncle the 0. 
commune of the ‘ Fragmenta Silurica ’ comes very near to this species, 
if it be not, indeed, identical with it. 
The example in the Collection which 1 have referred to this 
species, to which it seems to come nearest, is contained in a polished 
slab of marble, in which it is seen on both sides. It has a total 
length of 1 foot 2| inches, but is broken at each end. Its greatest 
diameter is about 15 lines, its least 4 lines. The septa are 1 inch 
apart at the larger end, and 8 lines at the smaller. Owing to the 
manner in which the specimen has been cut, the siphuncle appears 
to be proportionately much larger than it is in E. Reinhardi. 
Horizon. Or^/ioc^ras-Limestone ( = Arenig). 
Locality. Sweden. 
Represented in the Collection by one specimen. 
L 
