188 



THE AMERICAN MONTHLY [August, 



number of varieties found in my numerous and systematic gather- 

 ings made at that time. 



No. 240. New Haven Harbor (Connecticut). 



This gathering was one of the series of soundings described 

 in my former paper, and was taken from a depth of about twenty 

 feet of water at the entrance to Morris Cove, about half a mile south 

 of Fort Hale. 



Actinocyclus crassus Sm. 

 Actinoptvchus undulatus E. 

 AuliscLis pruinosus Grev. 

 Auliscus " -- var. zanzi- 



barica Griin. 

 Amphora intersecta A. S. var. 

 Biddulphia aiirita Breb. 

 Biddulphia rhombus Sm. 

 Campjlodiscus Echeneis E. 

 Cerataulus turgidus E. 

 Coscinodiscus apiculatus E. 

 Coscinodiscus excentriciis E. 

 Coscinodiscus ocuhis iridis E. 

 Coscinodiscus radiatus E. 

 C3'cIotella striata (K) Grun. 

 Melosira sulcata K. 

 Melosira " — var. coronata. 

 Navicula approximata A. S. var. 

 Navicula Bailejana Grun. 

 Navicula cariba^a CI. 

 Navicula forcipata Grev. 



Navicula formosa Greg. 

 Navicula — var. A. S. 50 ft'. 10. 14. 15. 

 Navicula fusca Greg. 

 Navicula Ilennedyi var. manca. 

 Navicula Ilumerosa Breb. 

 Navicula interrupta K. 

 Navicula latissima Greg. 

 Navicula Ijra E. 

 Navicula " — var. elliptica. 

 Navicula polysticta Grev. var. 

 Navicula praetexta E. 

 Navicula Smithii Breb. 

 Nitzschia acuminata Sm. 

 Nitzschia circumsuta Bail. 

 Pleurosigma afiine Grun. 

 Raphoneis amphiceros E. 

 Rhabdonema adriaticum K. 

 Surirella fasluosa E. 

 Triceratium favus E. 

 Trjblionella Hantzschiana Sm. 



No. 241. Morris Creek (Connecticut). No. i. 



This gathering and the following No. 2 were from soundings 

 in Morris creek, taken at points about half a mile distant from 

 each other. 



Actinocyclus Barkleyi Grun. 

 Actinoptvchus undulatus. E. 

 Amphiprora pulchra Bailey. 

 Amphora Euleinsteinii Grun. var. 

 Coscinodiscus lineatus E. 

 Cymbella gastroides var crassa. 

 Melosira Borreri Grev. 

 Melosira sulcata K. 

 Navicula distans A. S. 

 Navicula formosa var. A. S. 10 f. 15. 

 Navicula interruj^a K. var. 



Navicula lyra E. 



Navicula lyra — var. A. S. 2 f. 25. 

 Navicula pusilla Sm. var. 

 Nitzschia circumsuta Bailey. 

 Nitzschia scalaris Sm. 

 Pleurosigma afline Grun. 

 Pleurosigma balticum Sm. 

 Pleurosigma strigosum Sm. var. 

 Surirella striatula Turpin. 

 Tryblionella Hantzschiana Sm. 



No. 243. Morris Creek. No. 2. 



Actinoptvchus undulata E. war.'*? 

 Amphiprora pulchra Bailev. 

 Amphiprora maxima (ireg. 

 Amphora Euleinsteinii var. 

 Coscinodiscus excentricus var. 

 Cyclotella striata K. 



Mastigloia Grevillei Sm. 

 Navicula brevis Greg. 

 Navicula crucicula Sm. 

 Navicula rhyncocephala K. 

 Nitzschia scalaris Sm. 

 Nitzschia sigma Sm. 



