1912 186 p., 10 pls, roy. 4to, disbound (but with original printed boards loose). Unopened copy. Published in: Nova Acta. Abhandlungen der Ksl. Leop.-Carol.-Deutschen Akademie der Naturforscher.
1912 186 p., 10 plates, large 4to, new cloth (printed front cover laid on). Nova Acta/Abhandlungen of the Leopold.- Carolinische Akademie der Wissenschaften.