30 Notices of Memoirs—Lapworth’s N. American Graptolites. 
with broad grooved keel, and very transverse kidney-shaped mouth ; 
Euomphalus fenestralis, with a depressed spire and three ridges cancel- 
lated by numerous rings; Pleurotomaria perversa, a large sinistral 
shell, unlike Pl. expansa, Ph., in having spiral striz, a deeper suture, 
whorls more convex; P/. victriz, which has an elevated spire, angu- 
lated whorls, central sinus band, and a few spiral strie; Pl. Chud- 
leighensis, separated from the preceding in having its spiral ridges 
crenulated, and the sinus band much higher; Littorina devonaic, 
having the general shape of Purpura lapillus, with eight spiral rows 
of tubercles which are largest near the suture; Monodonta archon, 
very large and trochiform, with flat base and sides, linear suture and 
oblique growth-lines; Phorus philosophus, with a low spire, wide 
umbilicus and convex whorls bearing fragments of broken shells ; 
Macrocheilus tumescens, a much more globular form than M. sub- 
costatus, Schlot.; Turbo Pengellii, unlike T. subangulosus, dA. and 
de V., in its wider flatness above the shoulder; Loxonema scala- 
roides, very elongate, with its convex whorls crossed by discontinuous 
varices ; H. duplisulcata, differing from H. tenuisulcata in possessing 
a series of subsidiary striz; Acroculia columbina, a wide depressed 
form with fine waving longitudinal markings; Metoptoma cordata, 
like M. pileus, Ph., but with loftier umbo and more angulated mouth; 
and Chiton papilio, which comes midway between Ch. corrugatus, 
Sandb., and Ch. sagittalis, Sandb. 
The above are accompanied by Orthoceras Oceani, d’Orb. (= O. 
cinctum, Ph.), O. tenuistriaius, Miui., O. subfusiforme, d’A. and de V., 
O. regularis, Mi... O. subarmularis, Mi., B. lineatus, Goldf. (= B. 
striatus, Ph.), P. bifida, Sandb. (=B. Woodwardii, Ph.), Hu. serpula, 
de Kon., Lu. planorbis, d’A. and de V., Hu. levis, d’A. and de V., Hu. 
rota, Sandb., Hu. decussatus, Sandb., Hu. germanus, Ph. sp., Eu. cate- 
nulatus (=EHu. serpens, Ph., Pal. Foss. fig. 172, f. and g. only), PI. 
D’ Orbigniana, @A. and de V., Pl. subclathrata, Sandb., Pl. Lonsdalit, 
d’A. and de V., Pl. delphinuloides, Schlot., Pl. calculiformis, Sandb., 
Pl. trochoides (=Pl. monilifera, Ph. Pal. Foss.), Pl. distinguenda 
(=PI. aspera, Ph. Pal. Foss.), N. deformis, Sow., N. piligera, Sandb., 
T. multispira, Sandb.? Z. purpura, dA. and de V., L. subcostata, 
d’A. and de V., Scalaria antiqua, Mii., M. subcostatus, Schlot. (=. 
arculatus, Ph., and M. elongatus, Ph.), Scoliostoma tewatum, Ph. sp., 
Sc. gracile, Sandb., Holopella tenuicostata, Sandb., H. tenuisuleata, 
Sandb., 4. piligera, Sandb., Acroculia multiplicata, Giebel, and A. 
progeva, Hichw. 
IV.—Nore on Grapronites From Drase River, B.C.' By Prof. 
Cuarues Lapworth, LL.D., F.R.S., F.G.S. 
N June, 1887, a small collection of Graptolites was obtained by 
Dr. G. M. Dawson on Dease River, in the extreme northern and 
inland portion of British Columbia, about lat. 59° 45’, long. 129°. 
These fossils were derived from certain dark-coloured, carbonaceous 
and often calcareous shales, which in association with quartzites and 
1 Reprinted from the ‘‘ Canadian Record of Science.”’ 
