298 FERNANDUS PAYNE. 



of them arrange themselves in the form of a ring, inside of which 

 are the other five, which in this division are quite separate. 



The chromosomes seem to vary considerably in size and shape, 

 but this is merely due I think to various degrees of foreshortening, 

 produced by slight differences of position. However, some are 











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FlG. I. 1 Galgulus oculatus. A, B and C, metaphase of female (oogonia or 

 follicle) cells, polar view, showing thirty-eight chromosomes ; D and E, metaphase 

 of spermatogonial cells, polar view, showing thirty-five chromosomes ; F, G and H, 

 metaphase of the first spermatocyte division, polar view, showing twenty chromosomes 

 and the granules y. A, B, C, D and E are magnified 3,105 diameters and F, G and 

 H 2,009 diameters. 



evidently quadripartite and some bipartite. From my figures 

 some may be inclined to believe that the granules may be chro- 

 mosomes, but the number twenty is verified by the fact that the 



] All of the figures were very carefully drawn with a camera, a 2 mm. oil immer- 

 sion (Spencer) and compensation ocular 12 (Zeiss). Some were enlarged once and 

 some twice by means of a drawing camera which magnified I T 6 T diameters. Although 

 some error is unavoidable at such an enlargement, I have used great care in correcting, 

 and the chromosomes are not schematized in the least, as can be seen by a comparison 

 of the drawings, Fig. 2, B and F with the photographs, Fig. 3, A and D. 



