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 tlie 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 cnissus Sm. 

 Actinoptychus undulatus E. 

 Auliscus pniinosiis Grev. 

 Auliscus " — var. zanzi 



barica Grun. 

 Amphora intersecta A. S. var. 

 Biddulphia aurita Breb. 

 Biddulphia rhombus Sm. 

 Campylodiscus Echeneis E. 

 Cerataulus turgidus E. 

 Coscinodiscus apiculatus E. 

 GoscinodiscLis excentricus E. 

 Coscinodiscus oculus iridis E. 

 Coscinodiscus radiatus E. 

 Cyclotella striata (K) Grun. 

 Melosira sulcata K. 

 Melosira " — var. coronata. 

 Navicula approximata A. S. var. 

 Navicula Baileyana Gr'un. 

 Navicula caribcea CI. 

 Navicula forcipata Grev. 



No. 



Navicula formosa Greg. 

 Navicuhi — var. A. S. ^o tT. 10. 14. 

 Navicula fusca Greg. 

 Navicuh; Hennedyi var. manca. 

 Navicula Humerosa Breb. 

 Navicula interrupta K. 

 Navicula latissima Greg. 

 Navicula lyra E. 

 Navicula " — var. elliptica. 

 Navicula polysticta Grev. var. 

 Navicula praetexta E. 

 Navicula Smithii Breb. 

 Nitzschia acuminata Sm. 

 Nitzschia circumsuta Bail. 

 Pleurosigma affine Grun. 

 Raphoneis amphiceros E. 

 Rhabdonema adriaticum K. 

 Surirella fastuosa E. 

 Triceratium favus E. 

 Trvblionella Ilantzschiana Sm. 



J41. 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. 

 Actinoptychus 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 interrupta K. var. 



Navicula lyra E. 



Navicula lyra — var. A. S. 2 f. 25. 

 Navicula pusilla Sm. var. 

 Nitzschia circumsuta Bailey. 

 Nitzschia scalaris Sm. 

 Pleurosigma affine Grun. 

 Pleurosigma balticum Sm. 

 Pleurosigma strigosum Sm. var. 

 Surirella striatula Turpin. 

 Tryblionella Hantzschiana Sm. 



No. 242. Morris Creek. No. 2. 



Actinoptychus undulata E. var.?.' 

 Amphiprora pulchra Bailey. 

 Amphiprora maxima Greg. 

 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. 



