1895.] 



MICROSCOPICAL JOUKJNAL. 



275 



places and depths of water in Morris Cove, all of which 

 varied greatly in contents, it is probable that many 

 other unfamiliar forms noted are also new. I give a 

 partial list of species found in one sample of the deposit 

 beneath the marsh near Silver Sands. I omit all those 

 of whose determination I feel uncertain and also most 

 of the minute varieties. 



Actinocyclus barkleyi, Grun. 

 " crassus, Sm. 



" ehrenbergii, Ralfs. 



" triradiatus, Eoper. 



Actinoptychus areolatns, Schm. 



" undulatus, E. 



Araphiprora conspicua, Grev. 

 " lepidoptera, Greg. 



" pulchra, Bail. 



" vitrea, Sm. 



Auiphitetras autediluviana, E. 

 Amphora euleinsteinii, Gaun. 

 " intersecta, A. L. 

 " Isevis, Greg. 

 Auliscus eoelatns, Bail. 

 " pruinosus, Bail. 

 " radiatus, Bail. 

 " sculptus, Ralfs. 

 " macreanus, Grev. 

 Biddulphia aurita, Breb. 

 " Isevis, E. 



" pulchella, Gray. 



" rhombus, Sm. 



Cerataulus polymorphus, E. 



" turgidus, E. 



Campylodiscus echeneis, E. 

 Coscinodiseus apiculatus, E. 

 " excentricus, E. 



" oculis iridis, E. 



" radiatus, E. 



" lineatus, E. 



" subtiles, E. 



Coconeis scutellum, E. 

 Cyclotella stylorum, Br. 

 Epithemia museulus, K. 

 Melosira borrerei, Grev. 

 " uummuloides, Ag. 



Melosira sculp ta, K. 



" suleata, K. 



" undulala. 

 Navicula brevis, Greg. 



" crucicula, Sm. 



" elliptica, K. 



' ' formosa, Greg. 



" fusea, A. S 



" lyra, E. 



" latissima, Greg. 



'' humerosa, Breb. 



" interrupta, K. 



" peregrina, E. 



" pratexta, E. 



" pusilla, Sm. 



" sraithii, Breb. 



" theta, CI. 



Nitzschia, acuminata, Sm. 



" cireumsuta, Bail. 



" scalaris, Sm. 



" sigma, Sm. 



Pleurosigma affine, Grun. 

 " balfcicum, Sm. 



" decorum, Sm. 



" wansbeckii, Donk. 



Podocystis americana, Bail. 

 Pyxilla baltica, Grun. 

 Eaphoneis amphyceros, E. 

 Rhabdonemaadriaticum, K. 



" arcuatum. 



Stauroneis aspera, E. 

 Surirella iebegerii, Lewis. 



" gemma, E. 



" striatula, Turpin. 



" fastuosa, E. 



Triceratium favus, E. 



