Adephagous and clavicorn Coleoptera from the Tertiary deposits at Florissant, Colorado, with descriptions of a few other forms and a systematic list of the nonrhynchophorous Tertiary Coleoptera of North America.

40

An introduction to the study of the Protozoa, with special reference to the parasitic forms. By E. A. Minchin.

1922

Studies of the development and larval forms of echinoderms, by Dr. Th. Mortensen.

c. 3