4. Catenabacterium lottii Prevot, 1938. (Bacillo 7, Lotti, Ann. Ig. Sper., 19, 1909, 101; Prevot, Ann. Inst. Past., 60, 1938, 296.) lot'ti.i. M.L. gen. noun lottii of Lotti; named for C. Lotti, the bacteriologist who first isolated this organism. Straight, slender rods, 3 to 4 microns long, occurring in chains of 3 to 4 elements and in very long filaments. Non-motile. Gram- positive. Gas not produced in culture media. Gelatin: Liquefaction. Deep agar colonies: Lenticular, white. Glucose broth: Turbid; viscous sediment; acidified. No odor. Milk: Coagulated. Coagulated proteins not attacked. Indole produced in trace amounts. Acid from glucose and lactose. Anaerobic. Optimum temperature, 37° C. No growth at 22° C. Killed in 3 minutes at 70° C. Pathogenic for guinea pigs, causing fatal Source: Isolated from a case of appendi- citis. Habitat: Found in the human appendix and intestines. 5. Catenabacterium catenafornie (Eg- gerth, 1935) Prevot, 1938. (Bacteroides ca- tenafonnis Eggerth, Jour. Bact., 30, 1935, 286; Prevot, Ann. Inst. Past., 60, 1938, 296.) ca.te.na.for'me. L. fem.n. catena a chain; L. noun forma shape; M.L. adj. catenajonnis chain-like. Rods, 0.3 to 0.5 by 2.0 to 3.5 microns, oc- curring in long chains (20 to 100 elements) which are filamentous-like and non-seg- mented; possess globular swellings 2.0 to 3.0 microns in diameter. Non-motile. Gram- positive. Gas not produced in culture media. Gelatin: No liquefaction. Deep agar colonies : 2 to 3 mm in diameter, irregular. Glucose broth: Viscous zoogloeae at the bottom of the tube; no turbidity; acidified. Milk: Not coagulated. Coagulated proteins not digested. Indole not produced. Hydrogen sulfide produced in trace amounts. Acid from glucose, maltose, fructose, galactose, lactose, dextrin, sucrose, glycerol and starch. Ammonia and formic, butyric and lactic acids are produced. Nitrites not produced from nitrates. Neutral red and phenosafranin not re- duced. Anaerobic. Optimum temperature, 37° C. Not pathogenic. Source: Isolated from feces; also from a case of putrid pleurisy. Habitat: Found in human intestines and pulmonary cavity. 6. Catenabacterium nigrum Prevot, 1938. {Streptobacillus gangrenae pulmonaris Repaci, Compt. rend. Soc. Biol., Paris, 61, 1910, 410; Prevot, Ann. Inst. Past., 60, 1938, 296.) ni'grum. L. adj. nigei- black. Pleomorphic rods, sometimes occurring as short rods in chains of 10 to 14 elements, each measuring 0.6 by 1.0 to 2.0 microns, at other times occurring in very long and flex- uous chains. Non-motile. Gram-positive. Gas not produced in culture media. Gelatin: No liquefaction. Deep agar colonies: Delicate, lenticular, becoming blackened. Glucose broth: Slight, uniform turbidity; whitish mass of agglutinated filaments. Very fetid odor. Coagulated proteins not attacked. Indole not produced. Glucose feebly fermented. Anaerobic. Optimum temperature, 37° C. Pathogenic for guinea pigs, causing death. Source: Isolated from a gangrenous lung Habitat: Unknown. 7. Catenabacterium leptotrichoides Prevot, 1938. (Leptothrix sp. Jay, no refer- ence given; Catenabacterium leptothricoides (sic) Pr6vot, Ann. Inst. Past., 60, 1938, 296.) lep.to.tri.cho.i'des. Gr. adj. lept^is fine, thin; Gr. fem.n. thrix, trichis thread, hair; Gr. noun, eidus shape, form; M.L. adj. lep- totrichoides like a fine thread.
