Jahrb. Il. 1880. f Tafb 
Kobelt del. Lit v.Werner # Winter, Framkfurt “M. 
/Holix edentula. 2-4. Hel unidentata. ..6.Hel.Codringtonii var 7-4.Hel.euboea Parr W-I2.Hel.Thiessear Mouss. 
73-15. Hel.chalkidica Blant. 16.17. Bul. Thiesseae Godet. 
