. Bulletin - United States National Museum. Science. 84 BULLETIN 120, UNITED STATES NATIONAL MUSEUM. the nuclear condition after mitosis (h). Figure 52, e, shows an indi- vidual whose nuclei have entered upon the next mitosis preparatory to fission. The next to the anterior pair of nuclei, though still con- nected by a thread as is usual, are each in an anaphase of mitosis, showing two sets of four massive chromosomes (fig. 52, /). PROTOOPALINA AXONUCLEATA LATA, new subspecies. Type.—United States National Museum specimen Cat. No. 16622. Host.—Bana nigromaculata Hallowell, United Stat
. Bulletin - United States National Museum. Science. 84 BULLETIN 120, UNITED STATES NATIONAL MUSEUM. the nuclear condition after mitosis (h). Figure 52, e, shows an indi- vidual whose nuclei have entered upon the next mitosis preparatory to fission. The next to the anterior pair of nuclei, though still con- nected by a thread as is usual, are each in an anaphase of mitosis, showing two sets of four massive chromosomes (fig. 52, /). PROTOOPALINA AXONUCLEATA LATA, new subspecies. Type.—United States National Museum specimen Cat. No. 16622. Host.—Bana nigromaculata Hallowell, United States National Museum Cat. No. 39351, from 20 miles east of Hai-shin-ssu, Shensi. China, August 11,1909; A. de C. Sowerby, collector. Measurements: A., of a small individual with four nuclei; ^, of a large individual with eight nuclei— Measurements. mm. Length of body ' Width of body : 039 Length of nucleus .01 Width of nucleus 0065 Diameter of endospherule . 002 mm. .051 .012 .0065 .002 This form closely resembles that found in Bufo hufo asiaticus, but is broader. There is in some individuals a wide, round pointed, pos- terior process. In both the narrow and the broad forms of this spe-. FlG. 53. PROTOOrALINA AxONUCLEATA LATA, X 460 DIAMETERS : a SHOWS FOUR MACRO- CHROMOSOMES IN EACH NUCLEUS. IN EACH GROUP OF FOUR, ONE CHROMOSOME) IS NOTICEABLY LARGER THAN THE OTHER THREE. cies the macrochromosome number seems to be four. In the sub- species lata one of these macrochromosomes is noticeably larger than. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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