72 ANALES DE LA SOCIEDAD CIENTÍFICA ARGENTINA 



diam.) posticis gradatim majoribus, elongatis (4 mllm. long. — 

 1,5 mllm. lat.), in stipite non v. vix decurrentibus ; stipes lon- 

 giusciüus, gracilis (1 cent. long. — 1,5 mllm. crass.), teres v. 

 deorsum parce attenuatus, glaberrimus, laevissimus, pileo con- 

 color, basi abruptiuscule dilatato-adnatus. 



Hab. Ad ramos languentes v. emortuos in sylvis prope Guarapi, 

 30 Maj. 1883 (sub num. 3918). 



Obs. Favolus tenuissimus LéY., diagnosi, bnic valde af finís ! 



60. Favolus fimbriatus Speg. (n. sp.) 



Diag. Pileus dimidiatus (10-1Í2 cent. diam. — 5-6 cent. lat. ant.- 

 post.), albas, in sicco alutaceus, submembranaceo-carnosulus 

 (1 mllm. crass.), flaccidas, applanatas, iaevis, postice crassiu- 

 scule marginatus, ac laxe parceque hispidulo-velutinus, ceterum 

 glaber, margine integro, undulato-repando v. lobato, tenai, 

 membranáceo, subinflexulo saepeque denticulato; lamellae latiu- 

 sculae, albae, glabrae, alveolis subaequalibus, marginalibus 

 vix minoribus (3-5 mllm. long. — 1-2 mllm. lat.), acie acutae 

 ac densiuscule ciliato-fimbriatae (v. mellas denticulato-fimbria- 

 tae); stipes brevis, subtuberculiformis (5-8 mllm. long. — 5 

 mllm. crass,), albus, laxe bispidus, truncato-adnatus. 



Hab. Ad ramos emortuos arborum prope Paraguari, Jun. 1883 

 (sub num. 3907). 



Obs. Species pulcberrima lamellis fimbriatis valde insignis, ac 

 mox dignoscenda, Favolo tessellato Mntgn., ut videtur, af finís, 

 sed pileus non papulatus. 



61. Favolus fissus Lev. = Ann. Se. Nat. III, v. % p. 201. 



Hab. In truncis v. ramis cariosis emortuis prope Guarapi, Jun. 

 1883 (sub num. 3905). 



Obs. Pileus dimidiatus (7-8 cent. diam. — 4 cent. lat. ant.- 

 post.), applanatus, e membranáceo carnosulus, flaccidus, opa- 

 cus, albus (in sicco alutaceus), glaber, Iaevis, postice truncatus, 

 latiuscule marginatus (evídenter in juventute infundibulifor-' 

 mís) integer dein fere usque ad stipitem fissus, ibique umbili- 

 catulus, margine lobato-crenato, recto v. incurvulo, tenui mem- 

 branáceo, saepeque subdenticulato; lamellae rhombíce reticu- 

 lato-connexae, basi sublatiusculae (1-1,5 mllm. lat.) acie in- 

 tegrae v. vix hinc índe erosulae, membranaceae, alveolis ob- 

 tusa angulatis, subaequalibus, mediocribus (2-3 mllm. long. 



