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A new genus and a new species of spiders in the group Phrurolitheae. 

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William Brewster and the Pilgrim motive. Improvement era, May, 

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The Julidae,and Isobatidae in North America. Proc. Biol. soc. 

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The echinoderm fauna of Torres Strait: its composition and its 

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Report on the Echinoidea collected by the Barbados-Antigua ex- 

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The Zoological Laboratory. Rept. President Harv. Coll., 1919- 



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Blue geese (Chen caerulescens) in Massachusetts. Auk, April, 



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Massachusetts geese. Auk, April, 1921, 38, p. 271-272. 



A further report on species crosses in birds. Genetics, July, 1921, 6, 



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Phylogeny of the Arthropoda with especial reference to the trilo- 



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Conn. acad. arts and sci., December, [January], 1921, 169 pp., 



11 pis. 

 A contribution to the description of the fauna of the Trenton group. 



Mus. bull. 31 Geol. surv. Canada. Dept. mines, February, 1921, 



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The tornadoes of the United States. Ann. rept. Smith, inst. for 



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