230 ORDER I. PSEUDOMONADALES 



ee. Milk coagulated. 



3. Vibrio metschnikovii . 

 dd. Nitrites not produced from nitrates. 



4. Vibrio proteus. 

 cc. Indole not produced. 



d. Found in the human buccal cavity. 



5. Vibrio sputigenus. 

 dd. Cause of abscesses in the African toad. 



6. Vibrio xenopus. 

 bb. Does not liquefy gelatin. 



7. Vibrio leonardii. 



aa. Require sea-water or heavy brine media for growth on fresh isolation, 

 b. Isolated from sea water. 



c. A diffusible dark brown pigment is usually produced in gelatin 

 media. 



8. Vibrio marinopraesens . 



cc. A buff -colored pigment is produced on sea-water agar. No diffusible 

 pigment produced. 



9. Vibrio phytoplanktis . 

 bb. Found growing in brines. 



c. Acid from glucose. 



10. Vibrio costicoliis. 

 cc. No acid from glucose. 



11. Vibrio halonitrificans. 



2. Luminescent, digest agar, attack benzene ring compounds or oxidize oxalates, 

 a. Produce luminescence especially on neutral media containing sea water or 

 the equivalent salt content, 

 b. Gelatin liquefied. 



c. Require alkaline sea water or equivalent media for growth, 

 d. Optimum growth temperature, between 25° and 28° C. 



12. Vibrio himinosus. 



dd. Optimum growth temperature, between 30° and 32° C. 



13. Vibrio indicus. 



cc. Found in fresh water and in intestinal contents. 



14. Vibrio albensis. 

 bb. Does not liquefy gelatin. 



15. Vibrio pierantonii. 

 aa. Not as above. 



b. Digest agar either actively or at least soften it. 

 c. Found in soil and in rotting organic matter, 

 d. Decomposes both cellulose and agar. 



16. Vibrio agarliqvefaciens. 

 dd. Liquefies agar only. 



17. Vibrio andoii. 

 cc. Found in sea water with rotting algae. 



d. Nitrites produced from nitrates. 



e. Colonies on agar are white to gray. 



18. Vibrio beijerinckii. 



ee. Colonies on agar are pale yellow becoming bright yellow 

 then pale brown. 



19. Vibrio fuscus. 



