DONKIN, ON DIATOMACE^. 



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Campylodiscus parvulus, Sm. 

 Surirella lata, Sm. 

 „ Gepima, Sm. 

 fastuosa. Ehr. 

 Brightwelli, Sm. 

 ovata, Sm. 

 solina, Sm. 

 Tryblionella marginata, Sm. 

 „ punctata, Sm. 



,, acuminata, Sm. 



Nitzschia sigma, Sm. 



J, bilobata, Sm. 

 Navicula convexa, Sm. 

 Jennerii, Sm. 

 Westii, Sm. 

 punctulata, Sm. 

 pusilla, Sm. 

 Aniphisboena, var., 

 Sm. 



Navicula elegans, Sm. 

 Pinnularia peregrina, Ehr. 

 Stau7'oneis crucicula, Sm.. 

 Pleurosigma distortum, Sm. 

 fasciola, Sm. 

 litorale, Sm. 

 Hippocampus, 



Sm. 

 Balticum, Sm. 

 quadratum, Sm. 

 „ angulatum, Sm. 



Synedra tabulata, Sm. 

 ,, gracilis, Sm. 

 Amphiprora alata, Kiitz. 



„ constricta, Ehr. 



„ vitrea, Sm. 



Amphipleura sigmoidea, Sm. 



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5. Salt-water Species. 



Cocconeis scutellum, Ehr. 



^, diaphana, Sm. 

 Eupodiscus crassus, Sm. 



„ fulvus, Ehr. 



Actinocyclus undulatus, Kiitz. 

 Coscinodiscus radiatus, Ehr. 



,, ewcentricus, 



Ehr. 



„ concinnus, Sm. 



Triceratium favus, Ehr. 

 Campylodiscus Hodgsonii, 

 Sm. 



„ Ralfsii, Sm. 



„ clypeus, Ehr. 



rare. 

 Nitzschia spathula, De Breb. 



^, reversa, Sm. 



„ closterium, Sm. 

 Synedra super ba, Kiitz. 

 Navicula liber, Sm. 



^j pygnKsa, Sm. 



,, Smithii, De Breb. 



„ humerosa, De Breb. 



,, Crabro, Ehr. 



Navicula didyma, Kiitz. 



^, ^«/pe5ra/iSjDeBreb. 

 J, Lyra. Ehr. 

 ,, Kennedyii, Sm. 

 ,, retusa. De Breb. 

 Pinnularia Cyprinus, Ehr. 

 J, distans, Sm. 



^j directa, Sm. 



Stauroneis pulchella, Sm. 



var. pi. 19, fig. 1948. 

 Pleurosigma transversale, De 

 Breb. 

 Nubecula, Sm,, 



rare. 

 form,osum, Sm. 

 along atum, Sm. 

 delicatulum, Sm. 

 „ strigosum, Sm. 



„ cestuarii, Sm. 



Doryphora Boeckii, Sm. 

 Amphitetras antediluvianum, 



Ehr. 

 Biddulphia aurita, De Breb. 

 Bailey ii, Sm. 



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