462 ii. ptrexolichenes (Wainio). [Striyvla 
at sporis vulgo fusiformibus et apotheciis totis atris nudisque ab 
ea differens. 
Goluxgo Alto. — Ad faciem superiorem folii arboris Sapindaceiu 
prope Fonte de Capopa. No. 304 pr. p. Ad faciem superiorem 
foliorum Fici urceolaris Welw. in sylva primitiva prope Quisuculo. 
No. 288 pr. p. 
Species sequentes, verisimiliter sine apotheciis inexacte determinate, 
a Miill. Arg. in Lich. Afr. Occ. (Linn;ua 1880) p. 41 commemorantur : 
Str. complanata (Fee) Miill. Arg. var. ciliata (Mont.) Mull. Arg., Pyr. 
Fe'e n. p. 5, Lich. Beitr. (1890) n. 1570 (ad Humeri Quillu : Pechuel- 
Loesche), Str. elegans (Fee) Miill. Arg. var. genuina Miill. Arg., Pyr. 
Feean. p. 5, var. viridissima (Fee) Miill. Arg., I.e., var. nematora Miill. 
Arg., Pyr. Cub. p. 380, Lich. Beitr. n. 15G0 (ad Chinchoxo : Soyaux), 
var. Feet (Mont.) Miill. Arg., Pyr. Cub. p. 380 (ad flumen Quillu : 
Pechuel-Loesche). 
10. ARTHOPYRENIA (Mass.) Wain. 
1. A. (Polymeridium) obtecta Miill. Arg., Lich. Beitr. (1883) 
n. 638. 
Sagedia obtecta Miill. Arg., Lich. Afr. Occ. (Linnsea 1880) p. 42. 
Verrucaria tecta Stizenb., Lich. Afr. p. 223. 
Ad corticem arboris prope flumen Quillu leg. Pechuel-Loesche, 
teste Miill. Arg., I.e. 
2. A. (Acrocordia) recepta Miill. Arg., Lich. Beitr. (1883) n. 631. 
Sayedia alboatra Miill. Arg., Lich. Afr. Occ. (Linnrca 1880) p. 42. 
Verrucaria alboatra Nyl. var. recepta Stizenb., Lich. Afr. p. 223. 
Ad corticem emortuum et semiputridum Palmarum prope 
flumen Quillu leg. Pechuel-Loesche, teste Miill. Arg., I.e. 
11. DIDYMELLA Sacc. 
Hoc genus gonidiis carens ad fungos pertinet. 
1. D. Loandensis Wain., sp. n. 
Mycelium macula in albidam formans, gonidiis destitutum. 
Apothecia verrucas hemispheericas formantia, 0'3 ad 0-35 mm. 
lata, nigra. Perithecium fuligineum, dimidiatum, hemispha?ricuru, 
basi deficiens, denudatum aut basi tenuissime velatum. Nucleus 
jodo non reagens. Paraphyses numerosas, ramoso-connexse. Asci 
eylindrici. Spora; 8na), distichaj, decolores, ovoid<?o-oblonga\ 
1-septata?, septo fere in medio, hand constricta?, strato gelatinoso 
nullo indutas, long. 0-013 ad 0-020, crass. 0-0035 ad 0-005 mm. 
Sporis Verrucarice subjyrostanti Nyl., Exp. Pyrenoc. p. 56, Lich. 
Nov.-Gran. Prodr. p. 491 (Miill. Arg., Lich. Beitr. no. 633), 
congruit, at apotheciis minoribus et ascis distichis ab ea differt et 
habitu subsimilis Didymettce cinchonas (Ach.) Wain., Etud. Lich. 
Bres. II. p. 233. Ad fungos pertinet. 
Luanda (0 ad 1000 ped. s. m.). — Ad corticem arboris junioris prope 
Maianga do Rei. No. 451 pr. p. 
12. T0MASELLIA Mass. 
1. T. euphorbia? Wain., sp. n. 
Mycelium macula albida pallidave indicatum, gonidiis destitu- 
tum. Pseudostromata 2 ad 0'5 mm. lata, difformia, tenuia, ex 
