@book{bhlpg9766700, title = {Monitore zoologico italiano }, volume = {v. 28 (1917)}, url = {https://www.biodiversitylibrary.org/page/9766700}, publisher = {Instituto anatomico della R. Università di Siena}, author = {Unione zoologica italiana. }, year = {1917}, pages = {Page 61}, } @book{bhlpg51527600, title = {The Zoological record }, volume = {v.55 (1918)}, url = {https://www.biodiversitylibrary.org/page/51527600}, publisher = {J.V. Voorst}, author = {Zoological Society of London. }, year = {1918}, pages = {Page 19}, }