Published in Entomologische Mitteilungen Berlin, in 1914, in volume 3, pages 1-4
Published in Entomologische Mitteilungen Berlin, in 1914, in volume 3, pages 33-44
Published in Entomologische Mitteilungen Berlin, in 1914, in volume 3, pages 73-74
Abweichende Farbungen bei einigen palaarktischen Bienen. Eine neue Andrena (A. molhusina nov. spec.)
Published in Entomologische Mitteilungen Berlin, in 1914, in volume 3, pages 153-156
Published in Entomologische Mitteilungen Berlin, in 1914, in volume 3, pages 164-166
Published in Entomologische Mitteilungen Berlin, in 1914, in volume 3, pages 166-168
Published in Entomologische Mitteilungen Berlin, in 1914, in volume 3, pages 226-230
Published in Entomologische Mitteilungen Berlin, in 1914, in volume 3, pages 236-249
Published in Entomologische Mitteilungen Berlin, in 1914, in volume 3, pages 250
Published in Entomologische Mitteilungen Berlin, in 1914, in volume 3, pages 259-273
Published in Entomologische Mitteilungen Berlin, in 1914, in volume 3, pages 273-276
Published in Entomologische Mitteilungen Berlin, in 1914, in volume 3, pages 282-285
Published in Entomologische Mitteilungen Berlin, in 1914, in volume 3, pages 353-304