
MARINE DIATOMACEA OF THE L.M.B.C. DISTRICT. 123 
Hyalodiscus (Ehr.) stelligis, Bail. Surface of Dee, rare. 
Hi. scoticus, Grun. Mostyn, common. 
Licmophora (Ag.) gracilis, Grun. Mostyn, rare. 
L. anglica, Grun. Rhyl, rare. 
L. dalmatica, Kutz. Dingle Bay, Combev’s list. 
Lauderia (Cleve.) delicatula, Peragello. Surface of Dee, 
rare. This form I found with Hucampia striata, in 1879, 
and thought it a stage of growth of that form, but I think 
Peragello is right in placing it in the genus Lauderia. 
Mastoglova (‘Theo.) lanceolata, Th. Puddington Marsh, 
rare. 
M. smithu, Th. Mostyn, common. 
Melosira (Ag.) borreri, Grev. Rhyl, rare. 
M. nummuloides, Bory. Helsby Marsh, common. 
M. sulcata, Khr. Surface of Dee, rare. 
M. westu, W.Sm. Connah’s Quay, rare. 
Navicula (Dn.) abrupta, Greg. Surface of Dee, very rare. 
. estwwa, Dn. Colwyn Bay, rare. 
. afimis, Khr. Helsby Marsh, rare. 
aspera, Khr. Colwyn Bay, common. 
boecku, Herberg, Burton Marsh, rare. 
. bombus, Khr. Mostyn, common. 
. carassius, Khr. Mostyn, rare. 
. clepsydra, Khr. Colwyn Bay, rare. 
crabro, Khr. Connah’s Quay, common. 
. cyprinus, Khr. Mostyn, rare. 
. didyma, Ehr. Bagilt, rare. 
. distans, W.Sm. Helsby Marsh, rare. 
N. fortis, Greg. Mostyn, rare. 
N. fusca, Greg. Mostyn, rare. 
N. fusiformis, Grun. Mostyn, very rare. 
N. granulata, Breb. Rhyl, rare. 
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