Contributions to the anatomy of anthropoid apes / by Frank E. Beddard.
- Frank Evers Beddard
- Date:
- 1893
Licence: Public Domain Mark
Credit: Contributions to the anatomy of anthropoid apes / by Frank E. Beddard. Source: Wellcome Collection.
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![appears to be Schizoporella gonversi (Reuss) [No. 14, p. 159, pi. vii. fig. 7], from Rauchstallbrunn, but in that species the zooecia are shorter and broader, the areolae, fewer, and there is a pair of avicularia above the aperture. The large size of the sinus allies this species to Schizoporella beyrichi, Stol., but it differs in that the zooecia are elongate and rectangular instead of hexagonal, they are not quincuncially arranged, and the zoarium is not Cellarian (Cellaria beyrichi, Stoliczka, No. 1, p. 83, pi. i. fig. 10). Schizoporella insignis, Hincks [No. 4, pt. 5, p. 134, pi. v. fig. 10], differs in the quincuncial arrangement of the zooecia, the central umbo, and the raised line at a little distance from the margins of the zooecia. The shape of the zooecia and the absence of the tubercles above the aperture distinguish this new species from S. pauper (Reuss) \Leyralia pauper, Reuss, No. 14, p. 164, pi. v. fig. 4], which has a large sinus. The last two species with which it is necessary to compare this are S. variabilis (Reuss) [Hemeschara variabilis, Reuss, No. 12, p. 508, pi. i. figs. 1-5] and S. unicornis (Johnst.) [Lepralia unicornis, Johnston, No. 2, p. 320], which both belong to the same group. From the former the London Clay species is mainly to be distinguished by the size of the sinus. The latter differs by its umbo, the absence of maculae, and the smaller aperture ; the zooecia, however, agree in general form. IV. a. The Systematic Position of the Adeonellidae. The genus Adeona was established by Lamouroux [No. 1, pp. 478-482, pi. xix. fig. 2] in 1816 for some Bryozoa with short jointed stems and reticulate zoaria ; he took an Australian species, A. grisea, as his type: this species has also been made by Macgillivray the type of a genus Piety op or a, which is therefore necessarily a synonym. Enlarged figures of the zooecia have been given by Kirchenpauer [No. 1, pi. i. fig. 8, pi. ii. fig. 10] and Macgillivray [No. 1, pi. 66], and these show that it possesses a trypa or zooecial pore and a simple holostomatous orifice, and must therefore be referred to the Microporellidse. But this genus and its allies have long given much trouble to systematists and the classification is still unsettled. Busk’s ‘ Challenger ’ Report must certainly be held responsible for much of the confusion, as he there founded a genus Adeonella based wholly on zoarial characters; in consequence he included in it a miscellaneous series of species that must be divided among the several genera. Thus his Adeonella distoma has a trypa and is one of the Microporellidas, while others, such as A. polymorpha, have no such pore and must belong to a different genus and family. The subject has been attacked by Messrs. Hincks, Waters, and Macgillivray, and each of these has advocated very different conclusions. Mr. Hincks [No. 8, pt. i. pp. 150-158, especially 155 & 157] has discussed the matterat length with the following results : he maintains (1) that as Adeonella is based only on zoarial characters it is not distinct from Adeona ; (2) the latter genus he places among the Microporellidee, distin- guished from Microporella by the substitution of gonoecia for external ooecia ; (3) as he](https://iiif.wellcomecollection.org/image/b28141386_0089.jp2/full/800%2C/0/default.jpg)
