<p>Fauna u. Flora d. Golfes v. Neapel. Cepkalopoden Bd. 2 <br>
Taf.32 <br>
A. ^aef clel. <br>
Verlag v. R. Friedlander u. Sohn in Berttn <br></p>
J. B. Obernetter in Münclien
Naef, Adolf
1921
<a rel="nofollow" class="external free" href="https://www.flickr.com/photos/biodivlibrary/7447823826">https://www.flickr.com/photos/biodivlibrary/7447823826</a>