266 THE VOYAGE OF H.M.S. CHALLENGER. 



divisis (ita duplicates), longit. , 024-0'034 millim., crassit. - 010-0 - 015 millim. Iodo 

 gelatina hymenialis dilute vinose rosello tincta. 



Accedit versus Verrucariam libricolam, sed sporse minores et simpliciores. 



Admiralty Islands. — Ou the bark of trees ; very sparingly gathered. 

 Verrucaria albescens, Nyl., var. subochracea. 



Verrucaria albescens, Nyl., var. subochracea, Nyl. ex Crombio in Journ. Linn. Soc. Lond., xvi. p. 227. 

 Differt praecipue thallo subochracea tincto ; sporse incolores vel subincolores, seriebus 4 

 bi- v. triloculosis, longit. - 012-0'016 millim., crassit. 0008-0"009 rnillim. Iodo gelatina 

 hymenialis non reagens. 



Admiralty Islands. — On thin bark ; apparently frequent. 



FUNGI. 1 



Agaricus (Pleurotus) scabriusculus, Berkl. 



Agaricus (Pleurotus) scabriusculus, Berkl. in Journ. Linn. Soc. Lond., xvi. p. 48. 



Conchiformis postice depressus, pileo subtiliter pulverulento-tomentoso demum leviter 

 radiato-plicato ; stipite brevissimo laterali cylindrico quandoque applanato ; lamellis decur- 

 rentibus nee postice porosis integris. 



Pileus 1-2 inches wide, an inch or more long, soft and pliant ; when dry of an ochrea- 

 ceous tint. 



Admiralty Islands. — This species was founded on Mr Moseley's Admiralty Island 

 specimen, but it has also been discovered in Australia. 



Agaricus (Pleurotus) lachnocephalus, Berkl. 



Agaricus (Pleurotus) lachnocephalus, Berkl. in Journ. Linn. Soc. Lond., xvi. p. 48. 



Pileo excentrico tenui campanulato subtiliter velutino saccharino rufo umbilicato sul- 

 cato ; stipite cylindrico pulverulento e basi orbiculari albo oriundo ; lamellis latiusculis 

 decurrentibus. 



About }i inch across ; stem 4^ inch high, not 1 line thick. 



Admiralty Islands. — Endemic as far as at present known. 



Agaricus (Pleurotus) semisupinus, Berkl. et Broome. 



Agaricus (Pleurotus) semisupinus, Berkl. et Broome in Journ. Linn. Soc. Lond., xi. p. 529 ; Berkl. in 

 Journ. Linn. Soc. Lond., xvi. p. 49. 



Admiralty Islands. — Ceylon ; Borneo ; Mauritius ; Australia ; Tasmania. 



1 We arc indebted to Dr. M. C. Cooke for the particulars of the distribution of the species, and likewise for 

 the correction of a few inaccuracies which had crept into Mr Berkeley's original enumeration in the Journ. 

 Linn. Sir. Limit., vol. xvi. 1878. 



