. Bulletin - United States National Museum. Science. Fig. 192.—Opalina htlaxena form orbiculata, X 117 diameters ; c and d indicati-: THE LONGITUDINAL RIDGES SEEN IN MANY INDIVIDUALS. Measurements.—Length of body mm.; width of body mm.; diameter of nuclei mm. to mm.; diameter of nuclei of somewhat smaller individual mm. to mm. This very broad and short Opalina has very large nuclei. The animals are also quite thick. Most of the individuals are longi- tudinally plicate, the ridges being very noticeable both in life and in preserved specimens. I can not co
. Bulletin - United States National Museum. Science. Fig. 192.—Opalina htlaxena form orbiculata, X 117 diameters ; c and d indicati-: THE LONGITUDINAL RIDGES SEEN IN MANY INDIVIDUALS. Measurements.—Length of body mm.; width of body mm.; diameter of nuclei mm. to mm.; diameter of nuclei of somewhat smaller individual mm. to mm. This very broad and short Opalina has very large nuclei. The animals are also quite thick. Most of the individuals are longi- tudinally plicate, the ridges being very noticeable both in life and in preserved specimens. I can not connect this form confidently with any species. These may be actively growing infections of O. hijlaxena, short and broad because of the frequency of transverse division. The evidence pointing in this direction is the fact of resi- dence in the same host and the further fact that the nuclei are very large, as in O. hylaxena. It seems best, at least tentatively, to class the Woods Hole forms as a forma or a possible subspecies of O. hylaxena. OPALINA HYLAXENA, form PARVINUCLEATA, new forma. Type.—By some mistake no specimens of this forma were kept. Endeavor will be made to obtain more material and, if successful, a type slide will be deposited in the United States Nationnl 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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