PLECTASCALES 



431 



In hair, hyphae elongate, straight or tortuous, here and there breaking up into 

 isodiametric or rodlike arthrospores of variable size. Since the researches of 

 Nannizzi (1927) have not been confirmed by others (except by Biltris 1929), 

 the work on the imperfect stage of this species will be included in the discus- 

 sion of Achorion (see p. 553). 



Ateleothylax Currii (Chalmers & Marshall) Ota & Langeron, Ann. Par- 

 asitol. Hum. Comp. 1: 333, 1923. 



TrieJiophyton (Endothrix) Currii Chalmers & Marshall, Jour. Trop. Med. 

 Hyg. 17: 257-265, 289-291, 1914. 



MatrucJiotiella Currii Grigorakis, C. K. Acad. Sci. Paris 179: 1424, 1924. 



Causing tinea capitis tropicalis in Soudanese boys between 10 and 16 

 years of age. Not inoculable into cat, dog, white mouse, or monkey. 



Filaments in the hair 4-5/x in diameter. Terminal and intercalary chlamy- 

 dospores abundant in older cultures, closterospores rare but present ; perithecial 

 stroma black, 500/x in diameter; wall composed of interlocked hyphae with 

 thickened, greenish black walls, spores ellipsoid, slightly pointed at each end, 

 uniguttulate. 



Isolated in acid malt extract ; subcultured into a solution of 4% glucose 

 and 1% peptone or broth with -10 reaction. Milk not coagulated or acidified; 

 a white pellicle formed on blue litmus milk ; sugars not fermented. On 

 Sabouraud maltose and glucose gelatins, an acute knob forms, surrounded 

 by a white disc. On Sabouraud maltose agar at 37° C, growth forms a central 

 knob, an elevated zone, and a slight marginal fringe. On the seventh day, 

 there are two concentric zones, with furrow between inner zone and knob and 

 four slight radial folds. On Sabouraud glucose agar in 5 days, a knob with 

 white plateau and fringe; at 32° C. on carrot, growth visible on first day. 

 On fourth day a small central white elevation, surrounded by a dark zone, 

 depressed into the substance of the carrot, with a narrow white margin. At 

 32° C. on potato, growth grayish white at first becoming grayish black. On 

 Buchanan's medium and Loeffler's blood serum, growth scant, with a white 

 central elevation and white plateau. 



Ateleothylax Viannai (Froilano de Mello) Dodge, n. comb. 



Trichophyton Viannai Froilano de Mello, Indian Jour. Med. Res. 5: 222- 

 233, 7 fi.gs., PL 34, 1917. 



Atrichophyion Viannai Castellani & Chalmers. Man. Trop. Med. ed. 3, 

 1009, 1919. 



Sabouraudites Viannai Ota & Langeron, Ann. Parasitol. Hum. Comp. 1: 

 329, 1923. 



Clinically similar to herpes circinatus on thighs, pubis, and anterior part 

 of abdomen ; hairs probably not infected. Cured by application of tincture 

 of iodine. 



Mycelium with small spores, 3-4/x, either lateral or terminal chlamydo- 

 spores, spiral hyphae either lateral or terminal, lower portion enlarged like 



