Prof. W. Smith on the Diatomacese of the Pyrenees. 



1. Marine or Brackish-water Forms. 



IN umber of gatb 



Epithemia Musculus .... 



Amphora affinis 



saliua 



lueiubranacea 



Cocconeis Scutellum — 



Scutellum, var. /3. . 



diaphana 



dia])hana, var. (3. 



Coseinoiliscus ecceutricus 



radiatus 



Eupodiscus sculptus 



Actinocyclus undulatus ., 

 Cyclotella Kiitzing-iana ., 

 Campylodiscus cribrosus .. 



parvulus 



bicostatus 



Surirella striatula , 



ovata 



Gemma 



fastuosa 



constricta 



Ti-yblioaella Scutellum 



gracilis 



marginata 



acuminata 



levidensis 



constricta 



Nitzschia scalaris 



Taenia 



bilobata 



Sigma 



angularis 



spathulata 



Closterium 



Ampliiprora alata 



Navieula didy ma 



punctulata 



Smithii 



■ Liber 



pusilla 



Crabro 



pygmsea .. 

 palpebralis 



erings made^ 8. 



Navieula Hennedyii 2 



Westii 2 



Pinnularia peregrina 5 



gracilis 2 



Cyprinus = , 3 



directa 2 



Stauroneis pulchella 2 



pulchella, var. |S 2 



Pleurosigma Balticum 2 



angulatum 1 



rigidum 1 



decorum 1 



Sy necb-a affinis 3 



Gallionii 2 



Gallionii, var. /3 3 



Arcus 2 



tabulata 1 



uudulata 1 



Gomphonema marinum 2 



Rhipidophora elougata 2 



Bacillaria paradoxa 1 



Fragilaria striatula 1 



Eucampia Zodiacus 1 



Acbnanthes longipes 1 



longipes, var. y 1 



brevipes 1 



Rhabdonema arcuatum 2 



Adriaticum 1 



minutum 1 



Graramatophora marina 4 



serjientina 3 



macilenta 2 



Amphitetras antediluviana I 



Biddulphia pulchella 1 



aurita 1 



Rhombus 1 



Podosu'a hormoides 2 



Montaguei 2 



Mclosira subflexilis 1 



nummuloides 3 



Orthosira marina 3 



Schizonema cruciger I 



Grevillii 2 



2. Pyrenean Forms. 

 Number of gatherings made, 56. 



Epithemia Zebra 3 



turgida 2 



rupestris 6 



Argus 3 



gibba 4 



Epithemia ventiicosa 2 



Eimotia Arcus 18 



diodon 1 



C vmbella Helvetica 9 



— — Helvetica ^ 12 



