PLATE 2 



EXPLANATION OF FIGURES 



All drawings from a smear of a single male of Trimerotropis suffusa. Figures 

 1 to 12, at the left, refer to the different chromosomes arranged in order of size. 

 Letters A to H at the top refer to separate cells. The supernumerary chromo- 

 some in the row at the top of the plate is unnumbered, h, Refers to the transverse 

 clefts or constrictions in the atelomitic chromosomes; c, refers to appendant 

 clusters of granules (chromomere-vesicles) in chromosomes 4 and 8. 



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