168 
angulare 
reticulatura 
anlatum 
Nautilus 
subsulcatus 
tuberculatus 
cyclystomus 
transversalis 
Goniatites 
parvus 
vesica 
jugosus 
tumidus 
undulatus 
micronotus 
reticulatus 
excavatus 
subsulcatus 
dorsalis 
Listeri 
Gibsoni 
calyx 
mutabilis 
splendidus 
Looneyi 
discrepans 
stenolobus 
Longthorni 
paucilobus 
Kenyoni 
paradoxicum 
intermedius 
serpentinus 
proteus 
minutissiraus 
striolatus 
Goniatites Striolatus, Phillips's Geology of Yorkshire, Part II. p. 234, pi. 19, 
fig. 14 to 19. 
Subglobose sides (in adult shells) flattened, with very delicate 
striae, septa with very wide-pointed dorsal sinuses, and very wide 
rounded lateral lobes. This species differs in its infant and adult 
conditions ; the young shells are when 1| lines in diameter, con- 
sisting of five volutions, the inner ones entirely exposed ; when 
3 lines in diameter, it becomes more gibbous, with the umbilicus 
acute and very deep ; when 6 lines in diameter, the shell be- 
comes orbicular, the diameter and thickness nearly equal, with 
constrictions and striae slightly waved. Shell when 18 lines in 
diameter, back rounded, sides flattened, its thickness being equal 
to about one-third of its diameter, wholly covered by numerous 
divergent undulating striae, arranged in sixes, near the umbilicus, 
which is small and rounded ; constrictions, none apparent ; as the 
shell increases in dimensions it becomes broader in proportion to 
its thickness. Greatest known diameter, 30 lines, or 2j inches. 
J. GIBSON. 
I might say something slb to the scenery of the Todmorden 
valley, much of the beauty of which depends on the facility 
of water in the shale on the one hand, and the cloud-capped 
resisting millstone on the other. But I must quit this 
interesting Yoredale district, and bring my paper to a con- 
clusion in the township of Elland, where there is a sulphur 
spring of some value. 
The distinct features of this locality, together with the 
arts and manufactures pursued in and around Elland, greatly 
