Year: 1922
Type: article
Abstract: ABSTRACT Paludestrina ventrosa possesses the general Taenioglossate organization. It represents a genus of Paludestrinidae equivalent to Bythinella and Vitrella. It is peculiar within the family as possessing: Folded gills; A slit connecting the style sac through nearly all its length with the intestine ; A typhlosole; A non-ciliated roof to the median part of the pharynx. It represents an intermediate stage in the acquirement of the fresh-water mode of life, being essentially a brackish-water form with a fairly well-marked euryhaline tendency. Several structures not fully described by previous authors are discussed in this paper (e.g. the accessory female and circulatory organs), and it is not certain in what form these structures occur in other Taonioglossa. Within the Order Taenioglossa, Paludestrina is referable to the group which possesses : a brevicommissurate visceral commissure ; a single otolith ; an osphradium with basal ganglion ; a renal-portal system and blood-gland ; an ‘oviducal’ gland immediately adjacent to the receptaculum seminis.
Source: Journal of Cell Science
Author: Guy C. Robson
Institution: British Museum
Language: English
Subfield: Urology
Field: Medicine
Domain: Health Sciences
Open Access status: green
OpenAlex ID: W2556622012