. Bulletin - United States National Museum. Science. 112 125, UKITED STATES NATIONAL MUSEUM. pores and is sometimes covered with punctations of pleurocystal origin. The aperture is oval, elongate, formed of a large semilunar anter and of a wide proximal sinus. The oviccU is deeply embedded in the distal zooecium, little salient, closed by the operculum, ornamented by an orbicular and very fragile frontal area. ,, . A ^ f^ r, â fis = mm. Measurements.âApertura , . , â Zooecia , _ . _ ^ 1 Za = mm. I Iz = mm. Affinities.âThe punctations of the frontal are quite var
. Bulletin - United States National Museum. Science. 112 125, UKITED STATES NATIONAL MUSEUM. pores and is sometimes covered with punctations of pleurocystal origin. The aperture is oval, elongate, formed of a large semilunar anter and of a wide proximal sinus. The oviccU is deeply embedded in the distal zooecium, little salient, closed by the operculum, ornamented by an orbicular and very fragile frontal area. ,, . A ^ f^ r, â fis = mm. Measurements.âApertura , . , â Zooecia , _ . _ ^ 1 Za = mm. I Iz = mm. Affinities.âThe punctations of the frontal are quite variable; there is not a single zooecium similar to another. In a better preserved state we think that each zooecium is surrounded with areolar pores irregular in size and spacing. The frontal is a thick and compact olocyst, covered by a pleurocyst which is granular or punctured with large pores which do not perforate the zooecial walls. Unfortu- nately we have not been able to confirm this exterior aspect by sections. The possible relationship of this species to Schizopodrella mutabilis Canu and Bassler, 1919, has been mentioned under the discussion of that species. Occurrence.âLower Miocene (Bowden formation): Bowden, Jamaica (rare). Cotypes.^Cat. No. 68581, 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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