154 PROCEEDINGS OF THE AMERICAN ACADEMY. 



iutelligible. The very large mass of material obtained naturally contains 

 many of the species previously reported, illustrating more fully thau was 

 formerly possible the geographical distribution, variation, and hosts of 

 many of the species, notes concerning which are likewise reserved for a 

 more extended paper. The numbers referred to apply to the specimens 

 examined, which in the Hope and British Museum collections were 

 labelled if found to be infested. A portion of the specimens examined 

 at Paris were also labelled, but unfortunately this was not done in all 

 cases. 



Laboulbenia Acrogenis nov. sp. 



Perithecium rather slender, free except at its base, pale yellowish or 

 straw-colored, becoming yellowish brown, tapering to the neck -like rather 

 slender often almost clavate apex, the lip-cells hyaline, well distinguished, 

 the pore obliquely external : below more or less deeply suffused with 

 smoky brown, especially the outer half, the posterior (outer) sub- 

 terminal wall-cells very often becoming deeply sutfused with smoky 

 brown. Receptacle rather short, becoming slightly suffused with yellow- 

 ish brown, normal in form, sometimes slightly inflated between cells I 

 and II. Outer appendage consisting of a large rounded basal cell 

 bearing four to eight branches arranged an tero -posteriorly in a more or 

 less definitely double row, their insertions forming a continuous deeply 

 blackened area, their cells inflated, with blackened septa, successively 

 once to three times branched antero-posteriorly. The inner append- 

 age consisting of a much smaller basal cell producing from one to two 

 branches similar to those of the outer, one on either side. The antheridia 

 solitary or from two to four, borne rather regularly on short branchlets. 

 Perithecium 90-175x28-35^. Antheridia 14^ long. Total length 

 to tip of the perithecium 190-360 /x. Appendages 85-100 ^w. Spores 

 about 40 |U. 



On Acrogenys Mrsuta MacLeary, Brit. Mus. Nos. G68 and 528, 

 " Australia " and Union Reefs, Australia, Occurring on the inferior 

 posterior margin of the prothorax and the adjacent portions of the 

 thorax. 



Laboulbenia adunca nov. sp. 



Perithecium long and slender, straight or nearly so, the outer half 

 clear dark translucent brown, the inner pale olivaceous, wholly free, a 

 very short narrow hyaline neck formed by the basal wall-cells ; the tip 

 well distinguished, wholly blackish below or especially on the inner 



