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The development of the ethmoidal region of Ascaphus truei (Stejneger)
(Stellenbosch : University of Stellenbosch, 1982-12)
ENGLISH ABSTRACT:This study deals with the development of the ethmoidal region of Ascaphus truei Stejneger with special interest to the development of the nasal sacs, the diverticulum medium and the Jacobson's organ. ...
The histology of the alimentary canal and associated structures of Metopolophium dirhodum (Homoptera: Aphididae)
(Stellenbosch : Stellenbosch University, 1985-12)
The gross morphology and histology of the alimentary canal and the associated structures are described. The long tubular alimentary tract is divisible into different regions. The filter chamber and Malpighian tubules are ...