Volume 1
Natural history of Victoria : prodromus of the zoology of Victoria; or figures and descriptions of the living species of all classes of the Victorian indigenous animals / by Frederick McCoy.
- Frederick McCoy
- Date:
- [1885-90]
Licence: Public Domain Mark
Credit: Natural history of Victoria : prodromus of the zoology of Victoria; or figures and descriptions of the living species of all classes of the Victorian indigenous animals / by Frederick McCoy. Source: Wellcome Collection.
Provider: This material has been provided by Royal College of Physicians, London. The original may be consulted at Royal College of Physicians, London.
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![Plates 96-7. RETEPORA MONILIFERA (P. McGil.). [Genus RETEPORA (Imperato). (Sub-ldngd. Mollusca. Class Polyzoa. Order Infun- dibulata. Sub-order Cbeilostomata. Earn. Escbaridae.) Gen. Char.—Polyzoary stony, reticulated. Cells opening on one surface only, immersed, indistinct posteriorly. Posterior surfaces yibicate.] Description. — Polyzoary foliaceous, variously convoluted ; fenestrae oval, narrower than the interspaces; cells separated by narrow, raised lines, convex, smooth or granular; primary orifice arched above, straight below, or hollowed, or with a minute sinus; secondary orifice with a sinus in the lower lip, permanently open, or becoming closed, at one side of which is generally a small oval avicularium; operculum arched above, straight below; usually an elliptical avicularium on the front of the cell, and others of various forms on different parts of the polyzoary; ovicells prominent, rounded, or pyriform, with a headed or granular band above the orifice from which extends upwards a similar vertical band; dorsal surface vibicate, granular. References.—MacGillivray, Tr. Roy. Soc. Yict. 1859 and 1883; Hincks, Ann. and Mag. Nat. Hist., May 1878. This abundant species presents several forms so marked that it may he doubtful whether they ought not to be considered as species. In all, however, the mouth has essentially the same structure, a fissure in the lower lip of the peristome with a small avicularium at one angle of the opening. This fissure is sometimes closed by the complete or partial coalescence of the opposite sides leaving only a loop-shaped mark, or the lower end remaining perforated by a round foramen. The angle supporting the oral avicularium is frequently much produced forwards. The other avicularia are extremely various. There is generally an elliptical one on the front of the cell, and forms with semilunar mandibles are common. On the inner edge of many of the fenestrse one or more are found with long narrow mandibles closing in a rostrum which has a sharp tooth on each side towards the point. These open horizontally inwards. In all, the ovicell is prominent and marked by a beaded line immediately above the orifice from the middle of which a branch extends vertically upwards. In sinuata the upper part of the vertical line frequently projects considerably forwards, in](https://iiif.wellcomecollection.org/image/b24757469_0001_0587.jp2/full/800%2C/0/default.jpg)
