418 MINNESOTA BOTANICAL STUDIES 



1525. Norman, G. On some Undescribed Species of Diatom- 

 aceae. Trans. Mic. Soc. N. S. 9:5-9. jpl. 2. (14N1860.) 1861. 



Aulacodiscus sollittianus from Nottiagham, Maryland, described as 

 new. 



1526. O'Meara, E. On Stauroneis phyllodes (Ehrenb.) 

 Kuetz., Rabenh.— (Quart. Jour. Mic. Sci. N. S. 17:102. 1877.) 



Exhibited before the Dublin Microscopical Club, July 13, 1876. 



1527. . Undescribed Species of Craspedodiscus. 



—(Quart. Jour. Mic. Sci. N. S. 17: 106. 1877.) 



Example from fossil earth from Delaware and Maryland shown before 

 the Dublin Microscopical Club, Sept. 21, 1876. 



1528. . Brightwellia johnsoni exhibited. — (Quart. 



Jour. Mic. Sci. N. S. 17:304. 1877.) 



Before the Dublin Microscopical Club, Feb. 15, 1877. 



1529. . Characters of Craspedodiscus elegans. 



—(Quart. Jour. Mic. Sci. N. S. 17:465. 1877.) 



Specimen from Maryland deposit shown before the Dublin Micro- 

 scopical Club, May 24, 1877. 



1530. . Navicula mossiana. n. s., O'M., exhibited. 



—(Quart. Jour. Mic. Sci. N. S. 18:346. 1848.) 



Dredged from Discovery Bay, 81° 43' N. Dublin Microscopical Club, 

 Jan. 17, 1878. 



1531. . Some Arctic Diatoms, amongst which Biddul- 



phia balaena, which appears rather to be a Triceratium. 

 —(Quart. Jour. Mic Sci. N. S. 18:349. 1878.) 



Shown before Dublin Microscopical Club, Feb. 27, 1878. 



1532. . Docidiura nodosum, American example 



exhibited.— (Quart. Jour. Mic. Sci. N. S. 18:350. 1878.) 



Before the Dublin Microscopical Club, March 21, 1878, 



1533. Palmer, J. L. Colour of the Sea. Quart. Jour. Mic. 

 Sci. N. S. 8:178, 179. 1868. 



1534. Roper, F. C. S. On the Genus Biddulphia and its 

 Afi&nities. Trans. Mic. Soc. N. S. 7 : 1-24. 1859. 



American localities. 



1535. . On Triceratium arcticum. Trans. Mic. Soc. 



N. S. 8:55-58. If. 1860. 



Specimens from Vancouver's Island. 



1536. Rylamls, T. G. On the Markings of Diatomaceae. 

 Quart. Jour. Mic. Sci. 8:25-28. 1860. 



Remarks concerning Dr. Greville's Article on "Diatomaceae in Cali- 

 fornian Guano." 



