80 THE AMERICAN MONTHLY [Mar., 



vStauroneis aspera, Kg. Hyalodiscus radiatus, E. 



Raphoncis genimifera, K. Rhizosolenia stNliformis, Bright. 



" amphiceros, E. Triceratium favus, E. 



Tlie above list does not include the whole number of 

 species found in this deposit, possibly not more than half 

 of them; but enough are given to show the general char- 

 acter of the dei)Osit. I have not mentioned quite a num- 

 ber of the larger forms because I felt uncertain as to tiieir 

 proper determination ; and multitudes of the minute 

 kinds are omitted for the same reason. The Connecticut 

 shore material is remarkable for the large amount of 

 A^ery minute forms it contains. I had hoped to investi- 

 gate the deposit thrown up by the pressure of tlie R. R., 

 embankment crossing Leete's Creek, from top to bottom 

 during the dry weather but did not make it out. We se- 

 lected a place where the earth had been thrown up and 

 cracked o])en exposing a stratum about seven feet below 

 tlie original surface, liere we dug down five feet and pro- 

 cured earth from at least twelve feet below the tojt. 

 Slides made from this material show beautiful specimens 

 of >S//rirella fehigerii, TropMoneia seriata in great abun- 

 dance, Pleiiroftiqnia halticnni, large Cose hi odi sens, large 

 ^yiK^dra, Acfitiopiichuf; Ktuhthrffts, l^coliopleura and Naci- 

 inln all abundant: and small kinds down to very minute 

 in about equal proportion, i sent a slide containing the 

 medium density to Dr. D. B. Ward. He reports: " In the 

 12 foot deposit slide I found Narlc///a aspera, didyma, 

 //HI niKt, /ischf^rl, (^//ipt/ca, I'll/pt'/ci/ var., oldnngf^lhi . pt-re- 

 <l/-ina, difi'/to/uid/ata, yar/'/msis, l]//'ii, ///tcrnipta, sz/i/tl/iL 

 t'rn-///.o,'>(i : tSfa/(ro//e/'s sali//(( ; A/// pl/ora proteus : Ph//- 

 )'(>.s/<///i(i njfi/ii' ;\\\i\ Ixdt'/ci/ //I : T/'up/doneis ser/aia : Hl/ab- 

 dnneina adriatirtt/it ; Scoliopleara tm/zida ; Actiiioptyilins 

 Hfidtdatiis ; NItzschhi ///<n-f//tif/Iafa, sir//// a v.w.: Sz/r/rf^/ht 

 fehigerii ; and a small vav. o\' fastfuisa : Pa /•<(//<( si/IckIk ; 

 Cosci nodisc us oculis /r/d/s, /•(id/'at //s, e.r(entr/(//s. ap/c- 

 //Iat/(s (^f): I'^y/ied/'a fulye/zs ; Ji/ddidj/J/ia an/'itu aiitl 

 rl/oz/ihus.''' 



