32 
DIATOMACEA. 
Famity V.—SURIRELLEA—con. 
No. NAME. 
Synepra, Ehr. 
60 acicularis, Sm. .... 
19 affinis, Kutz. ...... 
12 ATCUS, KUtZ..ccccves 
24 biceps, Sm. ........ 
53 flexuosa, Breb. ..... 
10 fulgens, Sm. ...... 
23 Gallioni, Ehr....... 
3 gracilis, Kutz. .... 
9 hamata, 7. 5p....... 
3 lunaris, TET ey ayehe é 
3 minutissima, Kulz,. 
54 obtusa, Sm.... .... 
3 pulchella, Kutz..... 
9 radians, Sm. ...... 
6 tabellaria, Kutz .... 
22 WE TRS Sere Bano 
i Vaucherti 2... 2006 
Ruaruoneis, Ehr. 
15 Amphiceros, Ehr... 
TRYBLIONELLA, Sm. 
1 acuminata, 7. sp. 
54 gracilis, n, sp. .... 
21 granulata, n. sp..... 
2 marginata, n. sp.... 
60 punctata, n, sp. .... 
1 scutellum, Sm. ..., 
CYMATOPLEURA, Sm. 
1 apiculata, 2. sp. .... 
22 elliptica, Sm...... é 
2 Solea, Sm. ...essee 
SuRIRELLA, Turp. 
biseriata, Bred. .... 
3 Brightwellii, Sm,. 
46 craticula, Ehr. ..., 
10 crumena, Breb. .... 
5 gemma, Ehr. ,..... 
2 linearis, 2. sp. .... 
65 minuta, Bred....... 
17 nobilis, 2. sp....eee 
2 ovalis, Breb. ...... 
10 ovata, Kutz.....000- 
45 pinnata, 2. sp. .... 
51 salina, Sm. ....see 
10 splendida, Kutz..... 
5 striatula, Jurp. .... 
Locatirty. OccuRRENCE. 
Mostyn ..... ojlolanie’slete(s/cia'| is) ULV ola etlate Nek 
Hilbre Island ..........| July’72....ve 
Helsby Marsh ........+. 
Combermere........0.. 
Rhydymwyn .... 
Helsby Marsh . 
Rhyl . ee eerees 
Queen’s Park aferianetvetel ele 
Lache Lane ........-.. 
Queen’s Park 
ee a) 
Helsby Marsh ....es000s 
Queen’s Park ........4+ 
Lache Lane ......--0..- 
Canal, Chester........+- 
Llangollen..........0.6. 
Cym Bychan deposit .... 
ee a) 
Connah’s Quay 
Heron Bridge .......... 
Helsby Marsh . te 
MOREY ierctaic sions essere 
Flookersbrook 
Mostyn 
Cr 
eee eerene 
Heron Bridge .......... 
Llangollen .......scesees 
Flookersbrook .......... 
Cwm Bychan cae eos 
Queen’s Park .......... 
Railway Station ........ 
Helsby Marsh .......... 
TOS EVIL sais leletsisielalere «iccets . 
Flookersbrook . 
CERIO or 6 voMAn ood. 
Cwm Bychan deposit .... 
Flookersbrook ........+. 
Helsby Marsh .. ...... 
Handbridge 
Railway Bridge ...... 
Helsby Marsh ........+. 
MOStY0 cies coc esis sloped 
March ’72..ve 
March ’73....r 
Sept. ’74....vr 
rf March ’72....r 
Sept. ’72...vr 
May ’71....ve 
March ’72,.v1r 
May ’71....ve 
jet) pseen One 
March ’75 ...¢ 
May ’71....v¢ 
March ’72,.ve 
Sept. ’71...ve 
Aug. ’72...v¢ 
Aug. 777 ...vr 
May ’72....v¢ 
April ’71...ve¢ 
March ’75..vr 
July ’71....vr 
May’71....ve 
July ’72....v4r 
April ’71 ..ve 
April ’71...vr 
Aug. ’72...vc 
May’71....ve 
RanAstadon Wh 
May ’71....ve 
Noy. 41. sated 
March ’72....r 
July ’71....ve 
May’7l....ve 
June ’771.....7 
RES Spas 
y’71.. 
Mech 79. we 
Nov. ’71.....r 
..| April ’73...ve 
March ’72.,..r 
July ’71....ve 
I have retained craticula in this genus, but I have little 
doubt that it belongs to the genus Navicula, and is a sporangial 
