๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

The comparative morphology of the secondary sexual characters of elasmobranch fishes. The claspers, clasper siphons, and clasper glands. Memoir X

โœ Scribed by W. Harold Leigh-Sharpe

Publisher
John Wiley and Sons
Year
1926
Tongue
English
Weight
607 KB
Volume
42
Category
Article
ISSN
0362-2525

No coin nor oath required. For personal study only.

โœฆ Synopsis

Abstract

A summary is given of the previous memoirs, and an attempt has been made, upon the three characters of this investigation, to arrange the genera into families, which agree, with two exceptions (Mitsukurina and Dicerobatis), with preexisting families. Some deductions are drawn as to relationships and attention is drawn to Cestracion galeatus and Triakis as connecting links. Separate families are erected for Dicerobatis and Mitsukurina, and the latter is placed near to Notidanus. Resemblances are shown between Chlamydoselachus and the Holocephali. The Trygonidae, Torpedinidae, and Rhinobatidae are singularly uniform families. An index is added both general and specific.

๐Ÿ“œ SIMILAR VOLUMES

The comparative morphology of the second
The comparative morphology of the secondary sexual characters of elasmobranch fishes the claspers, clasper siphons, and clasper glands. Memoir VIII
โœ W. Harold Leigh-Sharpe ๐Ÿ“‚ Article ๐Ÿ“… 1926 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 590 KB

## Abstract Chlamydoselachus resembles the Holocephali in possessing no siphon, but a cavity in the proximal portion of the clasper. The cartilages, musculature, and venous sinuses of the clasper are considered. An older specimen of Echinorhinus is proved to have a spine on a soft papilla; Scymnus

The comparative morphology of the second
The comparative morphology of the secondary sexual characters of elasmobranch fishes. The claspers, clasper siphons, and clasper glands. Memoir IX
โœ W. Harold Leigh-Sharpe ๐Ÿ“‚ Article ๐Ÿ“… 1926 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 724 KB

## Abstract Sixteen species of the genus Scyllium are here considered and arranged in groups according to the accessory structures present on the claspers as follows: Canicula, sufflans, ventriosum. Catulus, stellare, capense, variegatum (var. pantherinus), umbratile. Burgerii, hispida, bivium,

The comparative morphology of the second
The comparative morphology of the secondary sexual characters of holocephali and elasmobranch fishes. the claspers, clasper siphons, and clasper glands
โœ W. Harold Leigh-Sharpe ๐Ÿ“‚ Article ๐Ÿ“… 1922 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 983 KB

Morfologia comparada de 10s caracteres sexuales secundarios de 10s Holoc6falos y peces elasmobranquios-10s ijrganos copuladores, sus sifones y glhndulas. Memoria IV. Chiloscyllium y Pristiurus poseen sifones semejantes a 10s de Scyllium. Los Holockfalos poseen rasgos peculiares y caracteristicos cl

The comparative morphology of the second
The comparative morphology of the secondary sexual characters of holocephali and elasmobranch fishes the claspers, clasper siphons, and clasper glands
โœ W. Harold Leigh-Sharpe ๐Ÿ“‚ Article ๐Ÿ“… 1922 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 1021 KB

Morfologia comparada de 10s caracteres sexuales secundarios de 10s Holocbfalos y peces elasmobranquios-10s 6rganos copuladores, sus sifones y gl8ndulas. Memoria V. Notidanus posee 6rganos copuladores primitivos en forma de hoja, contenidos en una vaina formada por la aleta p6lvica. Posee una cavid