118 MYCETOZOA OF ANTIGUA AND DOMINICA. 



lower half, while remaining connected above ; it is semicartilaginous 

 in substance, of a yellow-olive colour, and mottled with deposits of 

 brownish lime-granules ; the inner layer is membranous ; where the 

 spores and upper part of the wall have fallen away, the interior of 

 the sporangium, as seen as an opaque object, shines like brass with 

 iridescent reflections ; it is dotted over with pale papilla, w^hich in 

 some cases may be points of attachment to the capilhtium. These 

 striking differences from the type of P. murhuim might constitute a 

 specific distinction, if further gatherings should confirm their con- 

 stancy.^ The capilhtium, however, with its brown Hme-knots and 

 pale violet-brown spores, are essentially typical of the species. 

 The spores are small, measuring 7 /x, but they correspond with 

 those of a stalked form of F. muriiiuui sent me by Mr. Robert Fries 

 from near Upsala, in October, 1897. Until we have further in- 

 formation, I propose to mark the Dominica specimen as Physaniui 

 munmim var. (Eneum. 



16. Physaeum cinereum Pers. Five specimens on bark and 

 herbaceous stems, Antigua. They are the English form with pale 

 spores. 



17. Physarum conglomeratum Rost. On dried leaf, Antigua. 

 The sporangia are browner, more irregular in shape, and more 

 scattered than usual ; the vitreous structure of the sporangium-wall, 

 though present, is also less pronounced ; the spores, measuring 

 7-8 [x, are more spinulose than in typical examples. It is an un- 

 common form, but in shape it resembles a gathering from Lyme 

 Regis. 



18. FuLiGO sEPTicA Gmel. Antigua. A typical yellow sethalium. 



19. FuLiGO ELLiPsospoRA List. On rind of papaw tree, Antigua. 

 The specimen consists of two small sethalia with characteristic 

 spores. 



20. Physarella mirabilis Peck. On withered frond of cocoanut 

 palm, Antigua. Two specimens ; one quite typical, the other with 

 thick and irregular stalks. 



21. Craterium leucocephalum Ditm. On dead leaves, Antigua. 

 The sporangia are mottled red and white in the upper two-thirds, 

 and have rather long red-orange stalks. 



22. Chondrioderma spumarioides Rost. On bark, Antigua. A 

 single good gathering. The sporangium-wall is cracked in areola, 

 and the inner layer adheres closely to the outer. It varies slightly 

 from the type in the very prominent white columella, and in the 

 spores, which measure 10 /x, being rather darker and more spinulose. 



23. Chondrioderma Michelii Rost. On dead leaves, Antigua. 

 Two fine typical gatherings. 



24. Chondrioderma rugosum Rex. On dead leaves, Dominica. 

 This gathering is interesting as being the only one we are acquainted 

 with, except the type obtained and named by the late Dr. Rex from 

 North Carohna. The stalks are black, the clavate columella is 

 white, with a narrow pale tawny base; the substance of the 

 sporangium-wall and the slender capilhtium are the same as in 



