212 PROCEEDINGS OF THE AMERICAN ACADEMY. 



these names, and that all the species are best united under the first. 

 The antheridial characters are doubtful in all the species, and it is 

 still uncertain whether the structures described as simple antheridia 

 in both cases are actually functional as such; since no actual discharge 

 has been observed from them. In these, as in other cases in which 

 the antheridia are not clearly distinguished, either by their position 

 or form, it is often very difficult to distinguish them from young sterile 

 branchlets, unless the material is examined while still fresh, so that 

 the discharge of sperm-cells can be observed. I have therefore con- 

 cluded to drop the name HydrophUomyces, using Edcinomyccs to 

 include the three new forms below described, as well as E. rhynco- 

 phorus and E. reflexus. 



HydrophUomyces digitatus Picard on Ochtebius marinus from France 

 described in the Bull. Myc. Soc. de France, Vol. XXV, p. 244, 1910, 

 should also be changed to Ecteinomyces digitatus Picard, since it 

 evidently belongs in this group. 



Ecteinomyces rhyncopJwnis was found at Palermo on a small hydro- 

 philid, and has also been obtained from Guatamala; the material in 

 both cases corresponding in all respects to that originally obtained 

 from Florida. 



Ecteinomyces filarius nov. sp. 



Wholly hyaline. Perithecium rather long and narrow, straight, 

 hardly inflated, the tip rather long-conical with straight margins, 

 subtruncate or rounded, the apex symmetrical and subtended ex- 

 ternally by a distinct prominence; the basal cell-region not distin- 

 guished, its cells flattened around the ascogenic cells; borne on a 

 distinct short stalk-cell. Receptacle filamentous, slender, elongate, 

 consisting of many (about forty) superposed cells; the distal ones 

 becoming slightly broader, and occasionally cutting oflF a small cell 

 subterminally or laterally; the axis continuous with an erect primary 

 appendage of similar character, consisting of about six superposed 

 cells, and lying close beside the perithecium and slightly exceeding it in 

 length, bearing distally the remains of one or two branchlets. Spores 

 (in perithecium) 30-35X3 /z. Perithecium 70X14 /u; the stalk-cell 



8X10 ;u. Receptacle 230-275X7-9 M. Total length 290-340 m- 

 On the elytra of Coproporus rutilus Er. ; Tucuman, No. 1934, 



(P. Spegazzini). 

 The antheridia of this species have not been seen, and the types 



show only the bases of what appear to have been rather short branches 



