- Volume 19, Issue 3, 1969

The strain Morax 260 (ATCC 17967) is proposed as the neotype strain for Moraxella lacunata. The strain NCTC 7911 is considered a satisfactory reference strain for the M. lacunata biotype liquefaciens.

Classification of the organism Actinomyces propionicus (Buchanan and Pine 1962) has been reconsidered in light of its production of propionic acid and the presence of diaminopimelic acid in its cell wall. By these characteristics it differs from all other species of the genus Actinomyces. It also differs significantly from members of the genera Bacterionema and Propionibacterium. A. propionicus is placed in the new genus Arachnia under the name of Arachnia propionica comb. nov.

The biochemical reactions, antibiotic sensitivities, phage susceptibility and morphologic features of nine anaerobic corynebacteria, obtained from the American Type Culture Collection and Dr. A-R Prévot (identified in these collections as Corynebacterium acnes, C. anaerobium, C. avidum, C. diphtheroides, C. granulosum, C. liquefaciens, C. lymphophilum, C. parvum and C. pyogenes) were examined over an 18 month period. Many biochemical characteristics varied on repeated examination. All organisms were highly sensitive to 7 antibiotics and all but one of those tested were susceptible to a single phage. Size and morphology varied under different conditions. Review of the literature showed much disagreement on the characteristics of each organism. It was concluded that conventional routine methods do not permit their recognition as individual species, and that they should be regarded as variants of C. acnes.

The strain No. 1 (ATCC 25107) is designated as the neotype strain of Leucothrix mucor Oersted 1844, 44.

The names Streptococcus citrovorus, Leuconostoc citrovorus and Betacoccus cremoris have been regarded as synonyms. Evidence is given which suggests that Hammer used the name Streptococcus citrovorus for strains which in fact belonged to several species of bacteria. One of these strains which is a sucrose fermenting leuconostoc is indicated in the 1968 ATCC catalogue as the representative strain of Leuconostoc citrovorum. The strain indicated as representative under Leuconostoc cremoris is a sucrose nonfermenting leuconostoc. An Opinion is requested whether the specific epithet citrovorum should have been perpetuated in the species name as Leuconostoc citrovorum and also whether the name Leuconostoc cremoris should be conserved for the sucrose nonfermenting species of Leuconostoc. An Opinion on whether Leuconstoc citrovorum and Leuconostoc cremoris are synonyms is also requested.

Actinomyces viscosus (Howell et al.) comb. nov. Georg, Pine and Gerencser 1968, is proposed as the name of the organism previously described as Odontomyces viscosus Howell, Jordan, Georg and Pine 1965. It is proposed that Actinomyces discofoliatus (Grüter 1932) be placed on the list of nomina rejicienda as a nomen dubium.

During the eighth cruise of the R/V Anton Bruun, as part of the International Indian Ocean Expedition a bacterium was isolated from bottom mud at a depth of 400 meters. The extreme pleomorphism of this organism commended it for detailed study. It was subsequently named Hyphomicrobium indicum and a comparative study with other Hyphomicrobium sp. undertaken.

Addendum III is the third in a series of published lists of names of bacterial taxa assembled in the continued assessment of the status of new and older names, as a requirement for keeping the Index Bergeyana (1966) current.