Mr. W. Fawcett on an Entomogenous Fungus. 317 



mon and a beetle) in North America, Europe (including 

 England), Ceylon, and Borneo. 



In the British Museum collection Cordyceps imilateralis 

 also occurs on Camjjonotus atricejjs from Brazil, and on 

 Echinopla melanarctos and Polyrhachis merops^ both collected 

 by Mr, A. E,, Wallace at Tondano, a village in the island of 

 Celebes ; Formica sexguttata, from Brazil, is also attacked 

 by a fungus, too incomplete for identification. 



Two species of Cordyceps are reported to have been found 

 on species of Coccus^ namely C. pistillariceformi's, in England 

 and North America, and G. coccigeim, in New Guinea. The 

 latter was partially described by Tulasne * from an immature 

 specimen. The figure which he gives bears a great resem- 

 blance to Mr. Lloyd's fungus, and it is possible that it may 

 be the same species. 



Cordyceps Lloydii. a, mycelium ; b, apex of ascu8. 



The ant has the appearance of having been attacked by the 

 fungus while it was alive. The growth of the fine threads of 

 the mycelium through the body would gradually exhaust it, 

 until at last they have grown out at the joints of the thorax 

 and abdomen, and attached it to the leaf on which it was 

 standing, while the capitate stroma has then grown up between 

 the head and thorax. 



The following is a description of the fungus : — 



Cordyceps Lloydii , no v. sp. 



Stromatihus solitariis, pallide ochroleucis, ex articulo cervicali eriatis ; 

 capitulum perithecigerum dopresso-globosum, altitudine circ. 0*7 

 mill., latitudine circ. 1*5 mill. ; stipite filiformi, infra medium 

 autem iucrassata, longitudine 4*5 mill., crassitudine ad basim 

 apicemque 0-25 mill., infra medium 0'5 mill. ; peritheciis stro- 

 mate immersis protracto-ovatis ; ascis longissimis, cyliudraceis, 



* Fung. Carp. iii. p. 19, tab. i. fig. 10. 



