REV. M. J. BERKELEY ON AUSTRALIAN FUNGI. 389 



310. Ascobolus australis, Berk. Brunneus, ascis clavatis, sporidiis 

 ellipticis purpureo-fuscis Iambus, paraphysibus linearibus apice latioribus. 



On dung. Rockbampton (Thozet, no 851). Sporidia -021-028 inch 

 long. 



311. Xylaria Hypoxylon (Ehrenb.), var. Bowmani (Mitel.). Graci- 

 lis brevis. 



On dead wood, King's Creek. Very slender, § inch long, or 

 more rarely 1 inch, about Jj inch thick. Perithecia not sufficiently 

 advanced to show the nature of the sporidia. 



312. Sph^eria Schomburgkii, Berk. Peritheciis magnis liberis, ostiolo 

 lineari, sporidiis elongatis biconicis. 



A large and beautiful species ; sporidia "0013 inch long, fusiform, with 

 a single septum. 



313. Sph^erostilbe dubia, Berk. On the bark of ^Egiceras majus. 

 Rockhampton (Thozet, no. 747). This is only in the Stilbum state ;• it 

 is clearly distinct, but no character can be given without the ascige- 

 rous form. 



I take this opportunity of calling attention to a little understood 

 species of Sowerby, which, indeed, has been entirely neglected by Fries, 

 except so far as a note in the index to the third volume of the * Systema,' 

 where it is said to be allied to Coprinns domesticus, and is not included 

 in the latest list of British species of Fungi. The species in ques- 

 tion is Agaricus acetabulosus, Sow. t. 303, an allied form having been 

 found by Mr. Drummond at the Swan River. The original specimen is 

 still in existence, attached to the drawing from which the plate was 

 made ; and it is clear that it is no Coprinus, but is quite as distinct from 

 that as is Bolbitius. It must form a separate section in Dermini, 

 which may be called Acetabularia, analogous to Volvaria and Chitonia, 

 and of which there will be two species. 



Velum universaliter a pileo discretum ; hymenophorum discretum ; la- 

 mellae liberse ; sporse pallide fulvae v. brunneae. 



1. Agaricus (Acetabularia) acetabulosus, Sow. t. 303. Lamellis 

 hispid is. 



2. A. cycnopotamia, Berk. Lamellis pallide cervinis lsevibus, stipite 

 corneo. 



Sent by Mr. Drummond from the Swan River, where it is said to be 

 very rare. Pileus f inch in diameter, stem 1 £ inch high, about a line 

 thick. Gills leaving a free space round the top of the stem ; spores 

 •0003-*0004 inch in diameter. Volva composed of intricate threads, with 

 a central dark patch, which appears to contain spiral vessels, but the 

 materials are so scanty that it is impossible to speak with certainty. 

 Attached to the specimen is a species of Arachnion, Schwein. (the 

 spores are globose and •0002-*0003 inch in diameter), which mav be 

 called A. Drummondii, Berk. 



