Lepidoptera. Cambarus (Fasten, 1914), cf. Wilson. Many fungi : Camaro- 

 phyllus (Bauch, 1926), Saprolegnia (Mackel, 1928). 



C. Sub-terminal (i) minor element spherical. Fritillaria and Crepis species 

 (very common). 



D. Sub-terminal (ii), e.g., Fritillaria, Ornithogalum, Tiilipa, Crepis species 

 (very common). 



E. Median or sub-median, e.g., Tradescantia virginiana and Fritillaria 

 ruthenica (D., 1929 c), Atilacantha scolymantha, Euglypka sp., Monocystis 

 magna, Salamandra maculosa [of. Belar, 1926 b). 



F. Sub-terminal, short chromosome, e.g., Tradescantia fluminensis, frag- 

 ments of Fritillaria imperialis and Tradescantia virginiana (D., 1929 c). 



G. Sub-median, short chromosome, e.g., Ornithogalum narbonense (Delaunay, 

 1925. 1929). Veltheimia viridiflora (Taylor, 1925 a), Muscari tenniflorum 

 (Delaunay, 1926), Commelina bengalensis (D., 1929 c), Lachenalia spp. 

 (Moffett, unpublished). 



H. Sub-median, medium length chromosome, e.g., second and third chromo- 

 somes of Drosophila melanogaster (Stern, 1929), Crepis spp. (Hollingshead, 

 1928), Prunus spp. (D., 1928). 



I. Median, both arms spherical, very short chromosome as compared with 

 the rest of the complement. Muscari latifolium (Delaunay, 1929). 



J. Sub- terminal long constriction, e.g., Aconitum spp. {cf. Fig. 79.) 



II. Chromosomes with secondary constrictions, all short. 



A. Simple secondary constriction, Hyacinthus orientalis (D., 1926), cf. 

 Aucuba japonica (Meurman, 1929), Vicia Faba (Sakamura, 1915). 



B. " Intercalary trabant," e.g., Rhoeo discolor (D., 1929 c). Cf. Muscari 

 polyanthum and M. pycnanthum (Lewitsky and Tron, 1930) (?) Cyrtanthus 

 parviflorus (Taylor, 1925 a). 



C and D. Muscari polyanthum (Lewitsky and Tron, 1930), CEnothera spp 

 (D.. 1931). 



E. Multiple constriction, e.g., Fritillaria pudica (D., unpubhshed). 



III. Chromosomes w4th long secondary constrictions. 



A. Ranunculus acris (Sorokin, 1927), Crepis spp. (Babcock and Navashin, 

 1930)- 



B. Muscari longipes (Delaunay, 1926), Calochortus amabilis (Newton, 1927), 

 Spironema fragrans (D., 1929 c), Crepis spp. (Babcock and Navashin, 1930). 



C. Ornithogalum tenuifolium (Delaunay, 1925), Cyanotis zenonii (D., 

 unpublished) cf. Lachenalia spp. (Moffett, unpublished). 



D. Ornithogalum narbonense (Delaunay, 1925), Crepis setosa (Taylor, 

 1925 b). 



E. Ornithogalum nanum (Delaunay, 1925), cf. Allium Moly, (Levan, 1932). 



F. Bellevalia azurea, cf. also Muscari polyanthum (Lewitsky and Tron, 

 1930). 



G. Fritillaria s^^. (Taylor, 1926; D., 1929 c, 1930 c). 



H. Crepis tectorum (Hollingshead, 1928). Fritillaria ruthenica (D., 1929 c). 



Ij. Aloe saponaria (Taylor, 1925 b), Bellevalia romana (D., 1926), 

 Tradescantia virginiana and Rhoeo discolor (D., 1929 c), Crepis pulchra 

 (Hollingshead and Babcock, 1930). 



Ig. Mutant form with lateral trabant in Tradescantia (D., 1929 c. Fig. 77 ; 

 cf. Levan, 1932). 



J. Ribes aureum (Meurman, 1928; D., 1929 d). Rubus spp. (Crane and 

 D., 1928). 



K. Dahlia Merckii (Lawrence, 1929), CEnothera spp. (D., 1929). 



L and M. " Tandem " trabants. L. Allium Cepa (Taylor, 1925 a). M. 

 Aucuba japonica (Meurman, 1929). 



N. Intercalary trabant. Solanum Lycopersicum (D., unpublished). {Cf. 

 Lewitsky and Benetskaia, 1929 on S. tuberosum.) {N.B. This chromosome has 

 led to difficulties in counting the chromosomes in Solanum, cf. Winkler, 1916). 



O. Cyrtanthus parviflorus (Taylor, 1925 a). 



P. Aconitum spp. (Fig. 79) ; long centric constriction. 



