o4+ 
DIATOMACES. 
Famity VII.—MELOSIREAi—con. 
Name. 
Popostra, Ehr. 
maculata, Sm 
Metosira, 4g. 
arenaria, Sm. 
marina, Sm... 
senna 
seeee 
moniliformis, Kutz.. 
nummuloides, 
nivalis, Sm.... 
orichalce, Sm. 
Kutz. 
punctata, Mi BPS aX fers 
subflexilis, Kutz.. 
varians, Ag... 
Westii, Sm....... 
Locauity. OccURRENCE, 
Estuary of, Dees 5,7... .5)«- July ’75...... r 
Diancollen “ce ereass owners Ang. 72. ewok 
FIMAROStigin s:cicloc cbsis eets.se 21=) =) July ’71....v2r 
ERO West cta est sioiats’s ieiare'ate es Sept. (2.72.. r 
Helsby oe March ’72..vec 
Heron Bridge... :......+- March ’72..vr 
Cwm Bychan deposit ... 
Cwm Bychan depcsit .... 
Flookersbrook .......... 
Flookersbrook ......++- 
Connah’s Quay.......... 
14 
nn 
FAMILY VIII.—COSCINODISCEZ. 
Coscrnopiscus, Er. 
concinnus, Sm. 
weer 
eccentricus, Ehr. 
radiatus, Hhr..... 
OpontTopiscus, Ehr. 
eccentricus .. 
Actinocyctius, Ehr. 
Ralfsii, Sm 
undulatus, Autz.. 
Parkgate ...... 
Parkgate . aiareratetenee 
Connah’s Quay 
see een eee 
Estuary of Dee 
Parkpate << fe-v0.+nmastes 
Queen’s Berry... 6s sass 
Sea eine Merte vr 
aboioe Zoe BR bul: 
May’71....02 
May’7l....ve 
May ’72....vr 
June "72....: Yr 
June ’*72;...¥ ¢ 
March ’72..vr 
June ’72....vr 
June ’72....v Tr 
Dec.’7)....vie 
FAMILY IX.—EUPODISCEZA. 
Evpopiscus, Ehr. 
Argus, Ehr... 
CostTopiscus, 
Johnsonianum, 2%. sp. 
Connah’s Quay 
Mostyn .. 
FAMILY X.—BIDDULPHIEZ. 
May ’72....vr 
July ’71. ..vr 
BippuLPuia, Gray. 
aurita, Bred. 
Baileyi, Sm... 
obtusa, Kutz. ... 
radiatus, ”. sp. 
rhombus, Sm. ... 
turgida, Sm. 
weee 
...| Connah’s Quay 
Connah’s Quay ......... 
Connah’s Quay ......+.. 
Parkgate ...... Ora 
Parkgate ..... iets erento 
Parkgate ..... smd og oe 
Aer ae 
JUNE 12s25 ve F 
June ’72....vr 
