FAMILY III. STREPTOMYCETACEAE 



819 



Habitat: Unknown. 



147. Streptoinyces somaliensis 



(Brumpt, 1906) Waksman and Henrici, 

 1948. (Indiella somaliensis Brumpt, Arch. 

 Parasit., Paris, 10, 1906, 489; Waksman and 

 Henrici, in Manual, 6th ed., 1948, 965.) 



so.ma.li.en'sis. M.L. adj. somaliensis 

 pertaining to Somali; named for Somali, 

 an East African people living in Somaliland. 



Description taken from Erikson (Med. 

 Res. Council Spec. Kept. Ser. 203, 1935, 17). 



Vegetative growth: Simple branching, 

 unicellular mycelium with long, straight 

 filaments, forming circumscribed colony 

 crowned with aerial mycelium. 



Aerial mycelium: Short, straight. 



Gelatin: Cream-colored colonies, me- 

 dium pitted; complete liquefaction in 10 

 days; hard black mass at bottom. 



Agar: Abundant yellowish granular 

 growth with small discrete colonies at 

 margin; later growth colorless, colonies 

 umbilicated. 



Glucose agar: Poor growth, moist cream- 

 colored elevated patch. 



Glycerol agar: Abundant growth, minute 

 round to large convoluted and piled up 

 masses, colorless to dark gray and black. 



Ca-agar: Round cream-colored colonies, 

 depressed, umbilicated, piled up, thin white 

 aerial mycelium; colonies become pale 

 brown. 



Potato agar: Small round colorless colo- 

 nies, zonate margin depressed, confluent 

 portion dark greenish black. 



Blood agar: Small dark brown colonies, 

 round and umbilicated, piled up confluent 

 bands, reverse red-black; hemolysis. 



Dorset's egg medium: Extensive color- 

 less growth, partly discrete; becoming 

 opaque, cream-colored, very wrinkled; 

 later rough, yellow, mealy, portion liquid. 



Serum agar: Spreading yellow-brown 

 skin, intricately convoluted. 



Inspissated serum: Cream-colored coiled 

 colonies, medium pitted, transparent and 

 slightly liquid. 



Broth: A few round white colonies at sur- 

 face, numerous fluffy masses in sediment; 

 later large irregular mass breaking into 

 wisps. 



Synthetic sucrose solution : Minute round 

 white fluffy colonies in sediment; after 17 

 daj's, scant wispy growth. 



Milk: Soft semi -liquid coagulum which 

 undergoes digestion; heavy wrinkled surface 

 pellicle, completely liquefied in 12 days. 



Litmus milk: Soft coagulum, partly 

 digested, blue surface ring; clear liquid in 

 12 days. 



Potato plug: Abundant growth, colonies 

 round and ellipsoidal, partly piled up in 

 rosettes, frosted with whitish gray aerial 

 mycelium, plug discolored; after 16 days, 

 aerial mycelium transient, growth nearly 

 black. 



Antagonistic properties: Positive. 



Comments: Although Streptomyces soma- 

 liensis has been known for a long time, there 

 have been, until recently, no detailed de- 

 scriptions of the organism beyond the fact 

 that it possesses a distinctly hard sheath 

 around the grain which is insoluble in potash 

 and eau de javelle. The rare occurrence of 

 septa and occasional intercalary chlamy- 

 dospores is reported by Brumpt (Arch. 

 Parasit., 10, 1905, 562), but has not been 

 confirmed by Erikson. Chalmers and Chris- 

 topherson (Ann. Trop. Med. Parasit., 10, 

 1916, 223) merely mentioned the growth 

 on potato as j^ellowish white and lichenoid 

 without describing any aerial mycelium. 

 Balfour in 1911 reported a case but gave 

 no data, and Fiilleborn limited his descrip- 

 tion to the grain (Arch. Schiffs. Trop. Hyg., 

 15, 1911, 131). This species was first placed 

 in Indiella, a genus of fungi, by Brumpt 

 (1906). Later Brumpt (1913) proposed a 

 new genus or subgenus, Indiellopsis, con- 

 taining the single species Indiellopsis so- 

 maliensis. 



Source: Isolated from a case of j'ellow- 

 grained mycetoma, Khartoum (Balfour, 

 4th Rept. Wellcome Trop. Res. Lab., A. 

 Med., London, 1911, 365). 



Habitat: This condition has been ob- 

 served by Baufford in French Somaliland, 

 by Balfour in the Anglo-Egyptian Sudan, 

 by Fiilleborn in German So. West Africa and 

 by Chalmers and Christopherson in the 

 Sudan. 



148. Streptoinyces panjae (Erikson, 

 1935) Waksman and Henrici, 1948. {Actino- 



