ZOOLOGY 573 



was found between tide-marks in the same district. In record- 

 ing the presence of Chcetogaster langi, Bretscher, in a pond 

 in Bute, Stephenson points out that it is the same species as 

 was found by him in ponds in Northern India. 



A revision of the Isopod genus Ligia (Fabricus) has been 

 made by H. G. Jackson {Proc. Zool. Soc. Lond., Part III, 

 Sept. 1922). The writer has drawn up a key to the genus, 

 and described the morphology and distribution of seventeen 

 species. Five of the species of earher writers have been omitted 

 owing to insufficiency of description or doubtful validity. 



E. Schreiber has contributed to the ZooL Jahr,, Bd. 43, 

 Heft 4, a paper on the structure, development, and habits of 

 some freshwater Ostracods. The mode of life of eight species 

 is given and the development of Cyprinotus incongruens is 

 dealt with in detail, the characteristics of its eight larval 

 stages being described and figured (" Beitrage zur Kenntnis 

 der Morphologic, Entwicklung und Lebensweise der Siisswasser- 

 Ostracoden "). 



Other papers of interest include : 



Herfs, a., " Uber einige drusig difierenzierte Epithelien bei Schnecken," 



Zool. Jahr., vol. xliii, No. 4, 1922. 

 Herfs ,A., " Studien an den Hautdriisen der Land- und Siisswassergastro- 



poden," Archiv fiir tnikroskop. Anat., vol. xcvi, No. i, 1922. 

 Merton, H., " Ergebnisse einer zoologischen Forschungsreise in Brasilien 



1913-1914 von E. Bresslau, Neue Beitrage zur Anatomie von Temno- 



cephala," Zool. Jahr., vol. xliii, No. 4, 1922. 



Vertebrate Morphology. — E. P. Allis, junr., gives a very full 

 account of the cranial anatomy of Polypterus in the Jour, of 

 Anat., vol. Ivi, Parts III and IV (" The Cranial Anatomy of 

 Polypterus, with Special Reference to Polypterus bichir "). The 

 cranial structures described include the neurocranium, nasal 

 sac and apertures, and latero-sensory canals, also the special 

 osteology, myology, angiology, and neurology of the cranial 

 regions. 



A paper by G. Soderberg on " Contributions to the Fore- 

 brain Morphology in Amphibians " [Acta Zoologica, i, 1922) 

 contains descriptions of the telencephalon in frog and Triton 

 embryos, and in the adult stages of these animals. Another 

 important paper on the cranial anatomy of Amphibians is 

 that of W. H. van Seters on " Le d^veloppement du chon- 

 docrS.ne d'Alytes obstetricans avant la metamorphose " {Archiv 

 de Biol., vol. xxxii, No. 3). 



As the result of the study of the development of the vertebrae 

 of the urodele Necturus, D. L. Gamble concludes that the 

 change in attachment of the rib, from the centrum to the 

 neural arch in urodeles, is not the complicated process that 

 Goeppert described. The capitular head of the rib does not 



