TRICHOPHYTONEAE 521 



2 mm. in diameter often covered with hyphae or even tiny coremia, margined 

 rays sunk in the substrate, short. Some colonies are almost reduced to this 

 central dome. Surface moist and shining at first, finally becoming velvety 

 sometimes with slight irregular furrows. On Sabouraud conservation agar, 

 colonies smaller, brownish yellow or violet, glabrous, irregular. On potato or 

 carrot, small irregular masses, glabrous, grayish white, sometimes with tiny 

 coremia. On wheat, colonies moist and shining at first, becoming dull. On 

 barley, growth better and grayish white, becoming velvety. Pleomorphism in 

 cultures incubated at 28° C. 



Favotrichophyton conicmn (Cazalbou) Dodge, n. comb. 



Trichophyton conicum Cazalbou, Rev. Gen. Med. Vet. 24: 4, 5, 1914. 



Isolated from a horse during an epizootic of Trichophyton equinum, France. 

 Not reported since original case. 



Spores in lesions 2.5-4/x,, less ectothrix than T. equinum, same size on guinea 

 pig as on horse. 



Culture tubercular, yellow or orange, conic, base 1-2 cm., tip irregular and 

 obtuse, 5-8 mm. above the medium. Ochraceous on maltose, bright yellow on 

 glucose, variously channeled, margin velvety. 



Favotrichophyton ochraceum (Sabouraud) Neveu-Lemaire, Precis Para- 

 sitol. Hum. 55, 1921. 



f Trichophyton juscum tarclum Rosenbach, tJber die tiefen eitemden Schim- 

 melerkrankungen 30, 1894. 



Trichophyton ochraceum Sabouraud, Ann. Derm. Syphiligr. IV, 9: 628- 

 834, 1 pi, 1908. 



Ectotrichophyton ochraceum Castellani & Chalmers, Man. Trop. Med. ed. 3, 

 1004, 1919. 



Gruhyella ochracea Ota & Langeron, Ann. Parasitol. Hum. Comp. 1: 330, 

 1923. 



Arthrosporia ochracea Grigorakis, Ann. Sci. Nat. Bot. X, 7: 414, 1925. 



Achorion (Bodima) ochraceum Guiart & Grigorakis, Lyon Med. 141: 377, 

 1928. 



Producing kerions and large circinate lesions on man, inoculable into 

 guinea pig ; probably also on domestic animals, but cases not proved. 



This species is usually combined -with F. album, and F. discoides in statis- 

 tics. The group is reported as common in China, Algeria, and France ; occa- 

 sional in Holland, Holstein, Denmark, Siid-Bayern, Poland, and Uruguay. 



Only mycelium and chlamydospores present in cultures. 



Colony a small, yellow ochre tubercle, with a border of sulphur yellow. 

 On aging, covered with a very short velvet, scarcely visible except on central 

 portion which may be 1 cm. long, acuminate, and retains its yellow ochre color. 

 On glucose agar, margin with a short fringe of arborescent rays, white. On 

 peptone agar, colony more like Achorion, a rounded mass, somewhat cerebri- 

 form, gray, a little yellowish. 



Favotrichophyton caballinum Neveu-Lemaire, Precis. Parasitol. Hum. 55, 

 1921. 



