. Bulletin - United States National Museum. Science. 448 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. • \ Fig. 180.—Genus Coslaticella Maplestone, 1899. (Coslicella Levinsen, 1909) A-L. Costaticella hastala Busk, 1852. A. General aspect, frontal and dorsal of two branches and zoarium J^ natural size. (After MacGillivray, 1888.) B. A branch bearing a gonoecium; frontal view. (B, C. *After Busk, 1852.) C. The same from the basal surface. D. A zooecium; X75. E. A bizooecial internode. The longitudinal sternal sinus can be seen, X75 m, mother zooecium, d, daughter zooecium; I, th
. Bulletin - United States National Museum. Science. 448 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. • \ Fig. 180.—Genus Coslaticella Maplestone, 1899. (Coslicella Levinsen, 1909) A-L. Costaticella hastala Busk, 1852. A. General aspect, frontal and dorsal of two branches and zoarium J^ natural size. (After MacGillivray, 1888.) B. A branch bearing a gonoecium; frontal view. (B, C. *After Busk, 1852.) C. The same from the basal surface. D. A zooecium; X75. E. A bizooecial internode. The longitudinal sternal sinus can be seen, X75 m, mother zooecium, d, daughter zooecium; I, the suprascapular chamber; II, the scapular chamber; III, the infrascapular chamber; IV, the pedal chamber, X40. F. Sternal area and aper- ture. The long frontal sinus is distinctly visible, X40. G. A part of the sternal area from the internal surface. Outermost the margin of the cryptocyst plate, further in the frontal surface, X40. H. A terminal gonoecium, lateral view, X40. I. A gonoecium from the frontal surface, X40. J. The distal end of another gonoecium, X55. K. A sagittal section through a gonoecium. The endozooecial ovicell formed from the distal wall and covered by a kenozooecium is seen, X40. (D-K. After Levinsen, 1909.) L. Operculum, X85. (After Waters, 1887.) M. A zooecium of the genotype Costaticella lineata MacGillivray, 1895, showing terminology, j, chitinous joint; pm', distal group of parietal muscles;/, sh., frontal shield; cs, compensatrix; pm, parietal muscles; sup. avic, 6upra avicularian compartment; pol., rudimentary avicularian polypide; avic, avicularian compartment; inf. avic, infra-avicularian compartment; cp, septula. (After Harmer, 1902.). 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 Interio
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