Figure 17.Distribution of Bathycallisoma schellenbergi (Birstein & Vinogradov, 1958) and its synonyms. Circles represent Bathycallisoma schellenbergi and its objective synonyms. Subjective synonyms are represented by the following symbols: (■) Bathycallisoma pacifica, (▲) aff. Paracallisoma spec. Type localities are represented by the corresponding open symbol.