of various forms, often spindle-shaped. Fine-structured eosinophile nucleus. 

 Regularly finely vacuolized cytoplasm, less intensively stainable, mostly 

 amphophile. Rhegmatocytes — hemocytes лvith a fine structure, characteriz- 

 ed functionally by the participation in the hemolymph coagulation (coagulo- 

 cytes — Grégoire). Cells with a more intensive vacuohsation, spherical 

 vacuoles. Perhaps a transition to the following category. Granulocytes — cells 



I 111 I IV I V I VI 1 VII I VIII I IX 



Fig. 1. Graph representing the frequency of indi\àdual hemocyte types during the develop- 

 ment. Abscissa: developmental stages — III — Xlth instar and Im — Imago (average 

 of differently aged imagoes). N — nucleocytes, T — transitional forms, P — plasmato- 

 cytes, R — rhegmatocytes, S — spheroidocytes, G — granulocytes, D — degenerative 

 forms, J — naked nuclei. Ordinate: number of hemocytes of the given type in per cent 

 of the total hemocyte munber in the blood picture. 



with лvell developed homogenous cytoplasm containing typically spheroid 

 eosinophile granula. Naked nuclei and other degenerative forms. — The degener- 

 ation obviously runs in two directions: by the dissoh^ation of cytoplasm and 

 nucleus, i. e. over naked nucleus to nuclear shadow and by the pycnotisation 

 of nucleus resulting in karyoerhexis. In addition, mitoses were registered, 

 single twonucleated cells with shapes reminding of amitoses and some forms 

 difficult to be identified as belonging in one of the determined categories. 

 (Fig. I, l-8;Fig. II, 9-16.) 



The ranging of hemocytes to some of these types complies to a certain 

 extent with the functional point of view. There is the mitotic activity of nucleo- 



107 



