584 MANUAL OF DETERMINATIVE BACTERIOLOGY 



TRIBE IV. HEMOPHILEAE WINSLOW ET AL. 



(Jour. Bact., 5, 1920, 212.) 



Minute parasitic forms growing on first isolation only in the presence of hemoglobin, 

 ascitic fluid or other body fluids, or in the presence of certain growth accessory sub- 

 stances found in sterile, unheated plant tissue (potato) . Motile or non-motile. Com- 

 monly found in the mucosa of respiratory tract or conjunctiva. 



Key to the genera of tribe Hemophileae. 



I. Aerobes to facultative anaerobes. 



A. Non -motile. 



1. Predominantly occurring singly. 



Genus I. Hemophilus, p. 584. 



2. Predominantly occurring as diplobacilli. 



Genus II. Moraxella, p. 590. 



B. Motile, encapsulated. 



Genus III. Noguchia, p. 592. 

 II. Anaerobes. 

 A. Non -motile. 



Genus IV. Dialister, p. 594. 



Genus I. Hemophilus Winsloio et al.* 

 (Jour. Bact., 2, 1917, 561.) From Greek, loving blood. 



Minute rod-shaped cells, sometimes thread-forming and pleomorphic. Non-motile. 

 Gram-negative. Strict parasites growing best (or only) in the presence of hemo- 

 globin and in general requiring blood serum, ascitic fluid, or certain growth accessory 

 substances. 



The type species is Hemophilus influenzae (Lehmann and Neumann) Winslow et al. 



Key to the species of genus Hemophilus. 



I. Affecting the respiratory tract. 



1. Require both V and X growth factors for growth. 



1. Hemophilus influenzae. 



2. Hemophilus suis. 



3. Hemophilus hemolyticus. 



2. V growth factor sufficient for growth. 



4. Hemophilus parainfluenzae. 



5. Hemophilus pertussis. 



II. Affecting the genital region. 



3. X growth factor sufficient for growth. 



6. Hemophilus ducreyi. 



7. Hemophilus haemoglobinophilus. 



* Revised by Dr. Margaret Pittman, National Institute of Health, Bethesda, 

 Maryland, October, 1945. 



