456 Proceedings of the Royal Society 
shaft were flattened. The bones of the forearm and manus have 
not yet reached me. 
3. On Eespiration in the Boots of Avicennia officinalis (Linn.) 
and other Shore Plants ; with Observations on the 
Functions of the Lenticels. By Joseph Bancroft, M.D. 
Communicated by Professor Balfour, Y.P. 
4. {a) Diagnoses Fungorum novorum in Insula Socotra a 
Bayley Balfour, Carolo Cockburn et Alexandra Scott, lec- 
torum, quas elaboravit Dr. M. C. Cooke. Communicated 
by Dr. Bayley Balfour. 
Sterium retirugum, Gke . : coriaceo-membranaceum, murinum ; 
pileo effuso e cupulari explanato, confluente, marginato ; ambitu 
pallide fimbriato ; bymenio subvelutino, rcticulato-venoso, muri- 
naceo. 
Ad ramos. B.C.S. Bos. 1310 (junior), 1341 bis. 
Thametes sogotrana, Gke pileo sessili semiorbiculari, tenui, 
coriaceo zonato-sulcato, velutino, albo \ contexto, concolore, poris 
magnis dentatis, demum confluentibus, umbrinis. 
Ad truncos. B.C.S. Bo. 1342. 
(b) Diagnoses Algarum novarum Socotrensium a Bayley Bal- 
four, Carolo Cockburn et Alexandra Scott lectorum, quas 
elaboravit Dr. G. Dickie, F.B.S. 
Microthamnion breviarticu latum, Dickie , ramulis alternis, arti- 
culis diametro sequalibus vel duplodongioribus, diam. *0002 unc. 
Lyngbya scabrosa, Dickie , csespitosa, viridi-nigrescens, trichoma- 
tibus flexuosis, serugineo-coeruleis, articulis diametro duplo-breviori- 
bus, vaginis scabrosis, achrois, diam. *001 unc. 
