1866.] 



81 



[Greenleaf. 



DIctyocha up. Actinopticus undulatus. 



Hemidiscus cuneiformis,(=Euodia Asterolampra .sp., (broken.) 



gibba.) Polycystina, Sponge spicules and 



Stictodiscus californicus. shells, abundant. 



FROM A DEPTH OP EIGHT HUNDRED AND FIFTT-THREE FATHOMS. 



Triceratium Favus. 



" alternans. 



Navicula lyra. 



" priEtexta. 



" Hennedyi. 



" Smithii. 



" didyma. 



" nitida. 

 Campylodiscus. 

 Hemidiscus cuneiformis. 

 Amphitetras ^75. 



Nitzschia pandurlformis. 

 Asterolampra moronensis Grev. 

 Stictodiscus californicus. 

 Podosira maculata. 

 Pleurosigma sp. 

 Cocconeis distans. 



" sp. 



Coscinodiscus lineatus. 

 Sponge spicules, abundant. 

 Polycystina " 



Foraminifera " 



FROM A DEPTH OF EIGHT HUNDRED AND TWENTY-EIGHT FATHOMS. 



Triceratium Favus. 



" obtusum. 



Navicula didyma. 



" lyra. 



" Hennedyi. 



" Smithii. 

 Podosira maculata. 

 Heraidifcus cuneiformis. 

 Amphitetras ornata. 

 Eupodiscus crassus. 



Biddulphia sp. 

 Nitzschia pandurlformis. 

 Plagiogramma sp. 

 Coscinodiscus sp.., frequent, very 



small. 

 Navicula sp. (near granulata Bail.) 

 Surirella fastuosa. 

 Dictyocha sp. 

 Sponge spicules, Polycystina and 



Foraminifera. 



In this gathering are found broken diatoms, evidently new, but too 

 much broken to make out any determined forms. 



FROM A DEPTH OF FIVE HUNDRED AND EIGHTY-THREE FATHOMS. 



Pleurosigma Balticum. 

 Navicula Hennedyi. var. 

 Cocconeis distans. 



Triceratium obtusum. 

 Glyphodesmis sp. 



This gathering is very poor in diatoms. Many fine specimens of 

 shells and sponge spicules occur. 



I have given drawings of several new forms found in this gathering. 

 Some of them might be claimed as new species, but I prefer referring 

 them all to one or two species already established, Navicula hjra and 

 N. pra^texta. 



• PROCEEDINGS B. 8. N. H. — VOL, XI, 



MAT, 1867. 



