142 CLAVIS AGARICINORUM. 



stem ; but in Agaricus (Pholiota) tersus, Fr., it is so, and the stem 

 is furnished with a fugitive ring, showing a clear analogy between 

 this species and Lepiota (Plate C), Chavmota (Plate CI.), and Psal- 

 liota (Plate CIII.) ; neither are any brown-spored Agarics furnished 

 with a volva, unless, indeed, a trace of such a structure is indicated 

 in Cortinariiis (for Cortitiarins is certainly allied to Pholiota and 

 Heheloma), where many of the species have an adnate volva and 

 arachnoid ring. 



Remarks on Pries' new subgenus Liocybe will be found under Hehe- 

 loma. This latter subgenus resembles Cortinarius in many respects, 

 even to the lesser groups, into which both are divided, depending on 

 the character of the pileus, whether it is slimy, moist, or squamulose. 



The subgenera Flammida and Naucoria are in a most unsatisfactory 

 condition. They require thorough revision. The species of Naucoria, 

 with decurrent gills and depressed pilei (^. furfuraceus, P., etc.) I 

 remove to the next position, as analogous in every respect to Omphalia 

 and Eccilia, and describe under the name Tuharia. 



IV. Pratellje, P iirple-spored Agarics (Plate CIII.). — The affi- 

 nities and characters of all the subgenera are referred to under their re- 

 spective headings. I have already said that Pilosace is not British. • As 

 A. p/ii/saloides, Bull., has decurrent gills and a pileus at length de- 

 pi'essed, I remove it to the space corresponding amongst the Pralella 

 to Omphalia and Eccilia amongst tlie white- and pink-spored species ; 

 and name the subgenus Deconica. 



V. CoPRlNARii, Black- apored Agarics (Plate CIV.). — There is 

 little to be said about these in addition to the observations under the 

 respective subgenera. Psathyrella is very close to Coprimis, more so 

 i\\'A\\ Pan(Polus. In the Copriuarii the unrepresented 'spaces are very 

 numerous. I am unable to offer any suggestion as to filliug them, 

 unless by cutting up the genus Coprinus, the species of which genus 

 differ exceedingly in many points, especially in the attachment of the 

 gills to the stem. C. comatus, Fr., is clearly allied to Lepiota ; the 

 habit, scaly pileus, moveable ring, change of colour when cut, edible 

 qualities, etc., all point in this direction. The characters of some of 

 the others, as those growing on wood, etc., indicate other affinities ; 

 but till Agarics are better known these spaces must remain unoccupied. 



2. Analytical Key to the Agaricini. 

 In using the following key, the first and most important point to be 



