The Non-insect invertebrate collection of the NMNHS contains important samples of Myriapoda, Crustacea, Annelida, Nematoda, Platyhelminthes, Echinodermata and other invertebrate animals from Bulgaria and other countries. The collection is over 120 years old and includes historical materials deposited in the museum of prominent taxonomists such as Carl Wilhelm Verhoeff (Myriapoda), Karl Strasser (Diplopoda) and others. Former curators of the non-insect invertebrates were Assoc. Prof. Petar Beron and Assoc. Prof. Stoitse Andreev who developed it significantly. Latter has created the exposition hall on the fourth floor of the museum. Approximately 200 type specimens of myriapods are currently housed in the museum (see here
), followed by isopods (about 50) and bryozoans. In addition to the Balkan Peninsula, for some groups, like Myriapoda and Crustacea, there are also valuable type materials from Southeast Asia (Papua New Guinea, China, Vietnam, Indonesia, Laos, Philippines, etc.) and North and Tropical Africa. The collection room was completely renovated in 2013.