NO. IO COCKROACHES—ROTH AND WILLIS 61 
berg, 1952): Organism isolated from feces and alimentary canal. 
Periplaneta americana, U.S.A. (Bitter and Williams, 1949): Or- 
ganism isolated from intestinal tract. 
Paracolobactrum spp. 
Source.—All species of this genus isolated from human gastro- 
enteritis. Habitat: As preceding species. 
Natural vectors.—Blatta orientalis, Blattella germanica, and Pert- 
planeta americana, U.S.A. (Olson and Rueger, 1950; T. A. Olson, 
p.c.): The organisms were isolated from laboratory-reared cock- 
roaches. 
Periplaneta americana, U.S.A. (Bitter and Williams, 19492). 
Proteus mirabilis Hauser 
Source.—Gastroenteritis. Habitat: Putrefying materials, infusions, 
abscesses (Breed et al., 1948). Proteus bacilli appear to be responsible 
for a number of inflammatory and suppurative processes in man 
(Wilson and Miles, 1955). 
Natural vectors.—Periplaneta americana, U.S.A. (Bitter and Wil- 
liams, 1949, 19492): Organism isolated from intestines. Doubtful 
pathogenicity. 
Proteus morganii (Winslow et al.) Rauss 
Synonymy.— “Bacillus Morgan” of El-Kholy and Gohar. 
Source.—Summer diarrhea in infants. 
Natural vectors—Periplaneta americana, U.S.A. (Bitter and Wil- 
liams, 1949, 1949a) : Organism isolated from the intestine. Doubtful 
pathogenicity. 
Cockroaches (presumably Blatta orientalis, Blattella germanica, 
and/or P. americana), Egypt (El-Kholy and Gohar, 1945): Organ- 
ism isolated from suspensions of whole cockroaches, 
Proteus rettgeri (Hadley et al.) Rustigian and Stuart 
Source.—Sporadic and epidemic gastroenteritis. Some choleralike 
diseases of birds, fowl typhoid. 
Natural vectors ——Periplaneta americana, U.S.A. (Bitter and Wil- 
liams, 1949, 19492): Organism isolated from intestines. Doubtful 
pathogenicity. 
Proteus vulgaris Hauser 
Synonymy.—Bacillus proteus vulgaris. 
Source.—Urinary-tract infections, abscesses. Habitat : Feces, putre- 
fying materials. 
