1892.] 



MICROSCOPICAL JOURNAL. 



231 



line and fell and, lying beside their undisturbed roots, they were 

 covered by the marine deposit. The varieties found in this de- 

 posit are very numerous and very interesting, some of them being 

 new. Forms of Navicula coftstricta. JV. elliptica^ N. latissi??ia, 

 and many others are abundant. Pifimilaria cestiiarii^ Plejij-o- 

 sigma ( Colletonetna) exhnium, and other rare forms are plentiful. 

 One of the new varieties has been named bv Prof. Cleve " Caloneis 

 Wardii" in honor of Dr. D. B. Ward, of Poughkeepsie, N. Y., 

 who first called attention to it, having photographed it, with other 

 rare varieties, from one of my slides of this deposit. Other new 

 forms will be named and described in papers now in preparation. 

 I quote the following determinations from the series of J. Tempere 

 and H. Peragallo ; the samples sent were from the southern or 

 Davis' Pit : 



No. 375. QuiNxipiAC River (Deposit). 



Actinocvclus Ralfsii Pritch. 



Actinoptvchus undulatus E. 



Amphora Clevi Grun. 



Auliscus sculptus E. 



Brebissonia Boeckii Grun. 



Campjlodiscus Echeneis E. 



Cerataulus polj'morphus Grun. 



Cerataulus turgidus E. 



Coscinodiscus excentricus E. 



Coscinodiscus oculus iridis E. 



Coscinodiscus radiatus E. 



Navicula Delewarensis Grun. M. S. 

 Belle, espece liee au N. latissima 

 et ayant la forme dii N. pusilln. 



Navicula formosa Greg. 



Navicula Ijra E. 



Navicula peregrina K. 



Nitzschia circumsuta Grun. 



Nitzschia obtusa Sm. 



Nitzschia plana Sm. 



Nitzschia scalaris Sin. 



Nitzschia sigma Sm. 



Nitzschia Trjblionella Grun. 



Pinnularia nobilis E. var. 



Pinnularia strepto raptice CI. n. sp. 



Pinnularia viridis K. 



Plagiotropis seriata CI. n. sp. ffrande 



forme liee au PI. -oitrea. 

 Pleurosigma affine Grun. 

 Pleurosigma Balticum Sm. 

 Pleurosigma Spencerii Sm. var. 

 Pleurosigma strigilis Sm. 

 Rhabdonema Adriaticum K. 

 Surirella cardinalis Kitton. 

 Surirella striatula Turpin. 



No. 276. 



Amphiprora pulchra Bailej'. 

 Bacillaria paradoxa Ginel. 

 Brebissonia Boeckii Grun. 

 Coscinodiscus excentricus E. 

 Diploneis elliptica (Sm.) CI. 

 Diploneis interrupta (E.) CI. 

 Diploneis Smithii (Breb.) CI. 

 Navicula approximata Grev. 

 Navicula Braziliensis Grun. 

 Navicula clavata Greg. 

 Navicula Delawarensis Grun. 



Actinocyclus Ralfsii Pritch. 

 Actinoptjchus undulatus E. 

 Amphiprora pulchra Bailey. 

 Amphora proteus Greg. var. 

 Auliscus sculptus E. 



No. 



Navicula formosa Greg. 

 Navicula latissima Greg. 

 Navicula peregrina K. 

 Navicula permagna Greg. var. 

 Nitzschia fasciculata Grun. 

 Nitzschia obtusa Sm. 

 Nitzschia scalaris Sm. 

 Pinnularia icstuarii CI. n. sp. 



au f. tcastauron. 

 Pleurosigma Spencerii Sm. 

 Pleurosigma strigosum Sm. 



377. 



Campjlodiscus Echeneis E. 

 Coscinodiscus excentricus E. 

 Coscinodiscus oculus iridis E. 

 Coscinodiscus radiatus E. 

 Cvclotella striata K. 



