STUDIES ON CHROMOSOMES 



57 



All the figures are from camera lucida drawings. With a few exceptions they 

 are a little more enlarged than those of Study V. 



o 



Fig. 1 a-f, spermatogonial groups, M. femoratus, No. 64, three from each tes- 

 tis; g, h, spermatogonial groups for comparison from M. terminalis, No. 2, 

 with one small supernumerary (23 chromosomes); i, j, spermatogonial groups 

 from M. femoratus, No. 29 (22 chromosomes); k, I, early prophases, No. 64; m, 

 n, late prophase of same ; o, late prophase for comparison, from M. terminalis, No. 

 43, with one small supernumerary (23 chromosomes). 



