106 Prof. Santo Garovaglio on the Species of 



cially as A. Kochianus, Dunker {loc. cit. figs. 7, 8) appears to be 

 the analogous variation of A. Mans. If this view should prove 

 to be rightj we shall have a fourth form (forma agglutinans), 

 the rarest of all^ being as yet exemplified only in two of the 

 three species. 



XIV. — NotulcB LichenologiccB. No. XVI. 

 By the Kev. W. A. Leighton, B.A., F.L.S. 



Prof. Santo Garovaglio has favoured us with a copy of a 

 further portion of his ' Tentamen Dispositionis Methodicse 

 Lichenum/ comprising the Verrucarice quadriloculares, and 

 illustrated with three plates. 



Sectio III. 



Verrucarice quadriloculares. 



Saxicolse vel corticolae ; hermaphroditse, monoicse vel dioicse ; 

 epithecium breve, dimidiatum, subintegrum, carbonaceum (in 

 una alterave specie coloratura ; paraphyses nullse, obsoletse vel 

 distinctse, simplices aut ramosse, coutinuse vel in frustula solutse, 

 capillares vel articulatae ; asci lineares vel clavato-elougati ob- 

 ovative, interdum circa medium ventricosi, iuterdum supra basim 

 saccato-gibbi, octospori ; sporse in duplicem triplamve seriem, 

 rarius (Cohors IV.) uno ordine altera super alteram dispositse, 

 figura et magnitudine varise, s. ovoidese, obovatse, in formam 

 cocci^ bombycis, vel fusi, in cohorte III. gracillimse, aciculares, 

 in reliquis sat crassse, rectje vel curvatse, normaliter quadri- 

 loculares, loculis aniplis vel angustis, quorum duo interpositi 

 vix non semper rectangulari-tetragoni, extimi duo subconici. 

 In quibusdam speciebus loculi omnes ocellulati apparent, ocellis 

 rhombeis, subrotundis vel ellipticis, in singulis loculis ut pluri- 

 mum singulis. Thallus varius, in corticolis hypophloeodes. 

 Hypothallus modo obsoletus, modo distinctus, ater. 



Cohors I. 



Epithecio brevi vel dimidiato ; paraphysibus nullis vel obsoletis; 

 ascis elongato-clavatis, ventricosis, inflatis, octosporis; sporis 

 in duplicem triplamve seriem intra ascos distributis, tumi- 

 dulis, ellipsoideis obovatisve, eximie bombyciformibus, gran- 

 diusculis, quadrilocularibus, loculis binis intermediis rect- 

 angulai'i-tetragonis, extimis duobus ad formam coni, quorum 

 infimus vix non semper minor. (Species omnes saxicolse, 

 hermaphroditfe.) 



1. V. pseudo-Dufoureiy Garov. = V. pyrenophora, Leight. Ang. 

 Lich. p. 76; Exs. 139. V. papillosa, Leight. Ang. Lich. t. 24. 



