FAMILY OSCILLOSPIRACEAE 



1003 



1. Arthromitus cristatus Lsidj'. 

 (Proc. Acad. Xat. Sci., Phila., 4, 1849, 227 

 and Jour. Acad. Xat. Sci. Phila., 8, 1881, 

 443.) From the intestine of the milliped 

 (Julus marginatus) and the termite {Re- 

 ticulilermes flavipes). Filaments deli- 

 cate, straight or inflected, growing in 

 tufts usually of moderate density, from 

 minute, attached, yellowish rounded or 

 oval bodies. Articuli short, cylindric, 

 uniform, length 2.75 microns, width 0.6 

 micron, no trace of interior structure. 

 Length of filament 67 to 543 microns, 

 breadth 0.6 micron. 



2. Arthromitus intestinalis (Valentin) 

 Peshhoff. (Hygrocrocis intestinalis Val- 

 entin, Report, f. Anat. u. Phys., 1, 1836, 

 000; Peshhoff , Jour. Gen. Biol. (Russian), 

 /, 1940, 597.) From the intestine of the 



cocki'oach {Blutta uricuLalisj. Cliatton 

 and Perard (Compt. rend. Soc. Biol., 

 Paris, 74, 1913, 1160j conclude that this 

 species and Arthromitus cristatus Leidy 

 are of the same genus although they ac- 

 cept the name Hygrococis as having pri- 

 oritj^ However, the latter is invalid as a 

 bacterial genus because it was given 

 earlier as the name of a genus of algae. 

 See Buchanan, General Systematic Bac- 

 teriology, 1925, 183. 



3. Arthromitus nitidus Leidy. 

 (Smithsonian Contributions to Knowl- 

 edge, 5, 1852, 35.) From the intestine of 

 the milliped {Julus marginatus). 



4. Arthromitus batrachonun Collin. 

 (Arch. Zool. Exp^r. et Gen., 51, 1913, 63.) 

 From the alimentary tract of toad tad- 

 poles {Bufo calamila). 



Genus II. Coleoniitus Duhoscq and Grasse. 



{Coleonema Duboscq and Grasse, Arch. Zool. Exper. et Gen., 68, 1929, Notes et 

 Revue, 14; not Coleonema Bartl. and Wendl., 1924, fam. Rutaceac; Duboscq and 

 Grasse, Arch. Zool. E.xper. et Gen., 70, 1930, N. et R., 28.) 



Long hlaments, divided by partitions. Bacillary elements in basal region. Ovoid 

 or ellipsoidal spores in other parts of hlament originating by transformation from 

 these bacillary elements through sporoblasts. 



The type species is Coleomitus pruvoti Duboscq and Grass6. 



1. Coleomitus pruvoti (Duboscq and 

 Grasse) Duboscq and Grass^. {Coleo- 

 nema pruvoti Duboscq and Grasse, Arch. 

 Zool. Exp^r. et Gen., 68, 1929, Notes et 

 Revue, 14; Arch. Zool. Exper. et Gen., 

 70, 1930, N. et R., 28.) In the intestine 

 of a termite {Kalotermes sp.) from the 

 Loyalty Islands. 



Filaments with hyaline sheath, length 

 variable up to 320 microns, breadth 1.3 

 microns. Bacillary elements 3 to 4 

 microns long, also elements up to 6 mi- 

 crons with a chromatic granule or disc 

 in the middle of the body. Spores ellips- 

 oidal 0.8 to 0.9 by 1.7 to 2.0 microns, all 

 containing an excentrically placed gran- 

 ule of volutin. 



FAJVIILY III. OSCILLOSPIRACEAE PESHKOFF. 



(Jour. Gen. Biol. (Russian), 1, 1940, 611, 616.) 



Bacillary and filamentous forms. Fila- 

 ments are most probably partitioned to 

 form narrow cells each containing a cen- 

 tral chromatin body (disk-like nucleus). 

 These give a clear Feulgen reaction, and 

 are embedded in hyaline protoplasm. 



Spores are formed by a fusion of 2-3 proto- 

 plasts of neighboring cells. Actively 

 motile. The character of the motion sug- 

 gests the presence of peritrichous flagella. 

 Parasitic in the intestinal tract of verte- 

 brates. 



