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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![In regard to Adeonellopsis, it seems to me absolutely necessary to accept that or Busk’s [No. 8, p. 178J Beptadeonella, as it is going rather far to place such a species as “Lepralia ” violacea, Johnst., in Adeona or Microporella. Beptadeonella is prior by two years, but it was based only on zoarial characters and was never properly diagnosed, and I therefore prefer to accept Macgillivray’s better defined genus [No. 2, pt. ix. p. 134, and No. 3, p. 210]. Reuss has described another species which it is necessary to consider in connection with the Microporellidse, as it possesses both a trypa and an oral sinus. The species which shows this feature is of such interest in connection with the evolution of this group that it is advisable here to diagnose the new genus necessary for its reception. SCHISMOPORELLA1, n. g. Diagnosis. Zoarium lepralian or escharine. Zoeecia elongate, oblong (in known species). Aperture orbicular, with a large sinus. The front wall has a zocecial pore. Ooecia external, globose. Type species. Schismoporella schizogaster (Reuss)1’, 1847, Helvetian, Austria. This genus may at first throw doubt upon the assumed homology of the sinus and trypa, the latter being regarded as the more specialized. The occurrence of Schismo- porella may, however, be explained by a repeated formation of a sinus after the zocecial pore has travelled well away from the peristome : or else the division of the trypa into two or more pores has very frequently taken place, and there seems no impro- bability in one of these parts persisting as a sinus. If neither of these explanations is correct, then Schismoporella is probably a primitive form uniting characters now divided between two families. The following synopsis summarizes the classification of this group that is here proposed:— Schizo- thyriata. < Schizoporellidee : schizostomatous. External ooecia. Adeonellidce : primary aperture schizostomatous. Gonoecia. f Adeonince : with r Zoarium fenestrate, &c gonoecia. \ . Microporellinece: external marsupia. Schismoporellince : — Schismoporella. with trypa and sinus. Microporellidce: trypa present. Adeona. foliaceous or encrusting. Adeonellopsis. = Microporella, Tessarodoma, &c. 1 From iT^oyia, a slit, and nopos, a pore. 2 Cellepora schizogaster, lieuss, 1847, No. i, p. 84, pi. x. fig. 9; Mollia schizogaster, D’Orbigny, .No. 2, p. 388; Lepralia schizogaster, Beuss, No. 14, p. 161, pi. iii. fig. 10. vol. xiii.—part vi. No. 4.—June, 1893. 2 n](https://iiif.wellcomecollection.org/image/b28141386_0091.jp2/full/800%2C/0/default.jpg)
