Author Description

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1901 Excerpt:... Entoplasm of oral disc struct 19. Entoplasm of whole body ureless, slimy, and somewhat gran-distinctly alveolar and granular, ular. That of neck and attachment disc alveolar. Many details of the structure of Licnophora require further study, and the phenomena of conjugation are above all of the greatest interest. It is hoped that a future opportunity for work upon this organism will lead to the clearing up of these points, which for the present, however, must be offered in an incomplete form. To the great courtesy of Privat Docent Dr. H. Wallengren of the University of Lund, Sweden, I owe especial thanks for sending me slides of L. auerbachii ior comparison with the Monterey species. With Licnophora macfarlandi, in the respiratory tree of Holothuria californica, occurs a second ciliate infusorian of smaller size and heterotrichous structure. This form differs so widely from any previously described that I propose for its reception the new genus Boveria with the following characters. Animal heterotrichous, cylindrical or tapering, with rounded ends; cilia 01 two sorts, (1) a general body system of fine cilia arranged in slightly curved longitudinal rows, (2) a terminal peristomal spiral of long coarse cilia in a double row, closed at both ends, and opening out at the inner end to enclose the terminal mouth. Macronucleus oval, central; micronucleus nearer aboral end. Contractile vacuole near oral end. Reproduction by oblique fission. Genus dedicated to Dr. Theodor Boveri, Professor of Zoology in the University of Wurzburg. Boveria, gen. nov. Boveria subcylindrica, sp. nov. Plates IV And V; Plate VI, Figs. 83 And 84. General Description.--In the living respiratory tree Boveria is generally seen attached to the membrane by its ciliated base and extending strai...