A COMPARATIVE STUDY OF THE HETEROCHROMOSOMES IN CERTAIN SPECIES OF COLEOPTERA, HEMIPTERA AND LEPIDOPTERA, WITH ESPECIAL REFERENCE TO
SEX DETERMINATION.
BY N. M. STEVENS
WASHINGTON, D. C.:
Published by the Carnegie Institution of Washington
October, 1906
CARNEGIE INSTITUTION OF WASHINGTON
Publication No. 36, Part II.
FROM THE PRESS OF
THE WILKENS-SHEIRY PRINTING CO.
WASHINGTON, D. C.