(Pages 33-74. Plates VIII-XV.) - Studies in Spermatogenesis (Part 2 of 2) - N. M. Stevens - 4

PART II.A COMPARATIVE STUDY OF THE HETEROCHROMOSOMES IN CERTAIN SPECIES OF COLEOPTERA, HEMIPTERA AND LEPIDOPTERA, WITH ESPECIAL REFERENCE TO

(Pages 33-74. Plates VIII-XV.)