EMENDED DESCRIPTION OF BUTTIAUXELLA-AGRESTIS WITH RECOGNITION OF 6 NEW SPECIES OF BUTTIAUXELLA AND 2 NEW SPECIES OF KLUYVERA - BUTTIAUXELLA-FERRAGUTIAE SP-NOV, BUTTIAUXELLA-GAVINIAE SP-NOV, BUTTIAUXELLA-BRENNERAE SP-NOV, BUTTIAUXELLA-IZARDII SP-NOV, BUTTIAUXELLA-NOACKIAE SP-NOV,BUTTIAUXELLA-WARMBOLDIAE SP-NOV, KLUYVERA-COCHLEAE SP-NOV, AND KLUYVERA-GEORGIANA SP-NOV

A total of 219 strains belonging to the genera Buttiauxella and Kluyve ra were studied; 171 of these strains were isolated from mollusks, mai nly snails and slugs, obtained from around the world, On the basis of DNA-DNA hybridization data, the strains were grouped into 11 genomospe cies, A total of 44 phenotypic characters were used to differentiate t he genera Buttiauxella and Kluyvera at the genus level and to identify genomospecies, There were significantly higher phenotypic probability distances between the genomospecies in the genus Buttiauxella and the genomospecies in the genus Kluyvera than between the genomospecies in the same genus, Therefore, the existence of Buttiauxella and Kluyvera as different genera was confirmed, The existence of new species neces sitated broadening the definitions of both genera, In two cases, two B uttiauxella species could not be quantitatively differentiated biochem ically, and several other pairs of species could be separated only by the results of one biochemical test, Nonetheless, combinations of seve ral characteristics were used to differentiate all of the species with levels of certainty ranging from log 10.79 to log 57.77 (calculated a s probability distances), The following new species are proposed: Butt iauxella ferragutiae (type strain, ATCC 51602 [DSM 9390]), Buttiauxell a gaviniae (type strain, ATCC 51604 [DSM 9393]), Buttiauxella brennera e (type strain, ATCC 51605 [DSM 9396]), Buttiauxella izardii (type str ain, ATCC 51606 [DSM 9397]), Buttiauxella noackiae (type strain, ATCC 51607 [DSM 9401]), Buttiauxella warmboldiae (type strain, ATCC 51608 [ DSM 9404]), Kluyvera cochleae (type strain, ATCC 51609 [DSM 9406]), an d Kluyvera georgiana (type strain, ATCC 51603 [DSM 9409]).