18 BOTANICAL GAZETTE [january 



In several cases the sporogonium has emptied itself, leaving a few residual 

 spores, and in such individuals the basal cells, as shown in fig. 42, are already 

 more or less disorganized, while the spores may be considerably swollen and 

 rounded, measuring even as much as 6X3 . 5 fi, having surrounded themselves 

 with more or less evident walls. 



Despite the apparently simultaneous formation of the spores, however, 

 and their irregular distribution throughout the cavity of the sporogonium, 

 it seems best, at least provisionally, to associate this type with Thaxteriola 

 and Endosporella in a group of "Thaxteriolae," to which the genus Entomo- 

 costna Speg. may possibly be added. 



Amphoromorpha Thaxter. — The type of this genus, A, entomo- 

 phila, was described and figured in my previous paper (loc. cit., 

 p. 251, figs. 26-28), having been observed on species of Labia and 

 Diochus from the Philippines. It has since been noticed on a carabid 

 allied to Platynus from Jamaica, on a species of Pachyteles from 

 Verdant Vale, Arima, Trinidad, and on a host allied to Ardistomis 

 from Hayti. Although the specimens obtained from these sources 

 correspond in all respects with the original types, the more abundant 

 material thus made available furnishes certain additional informa- 

 tion which is of interest and tends to harmonize the characters of 

 this species with those of other related forms which are not dis- 

 tinguished by the same striking specific peculiarities. 



An examination of specimens removed in toto, so as to include 

 the whole individual, including its attachment, and viewed anteri- 

 orly or posteriorly, shows that the foot, which, when viewed sidewise, 

 usually appears to be black and quite opaque and would naturally 

 be assumed to correspond to that of most Laboulbeniales, or of the 

 Thaxteriolae, is of quite a different nature. This is due to the fact 

 that its main mass consists of a secretion which spreads over the 

 surface of the host, and, when viewed in the position indicated, is 

 translucent, and may be transparent enough to show the actual 

 termination of the organism. This termination is very clearly a 

 short, abruptly distinguished rhizoid (fig. 45), which is held firmly 

 against the host by- the indurated secretion just mentioned, and 

 suggests the somewhat analogous rhizoidal attachments of some of 

 the Rhizideae among the Chytridiales. 



An identical condition is seen in the other species of this type, 

 two of which are illustrated in figs. 44 and 46. The character of 



