36 PROCEEDINGS OF THE AMERICAN ACADEMY. 



distinguished by its very slender and long appendages, which, although 

 they are only about 4 n in diameter, may reach a length of more than 

 300 jit. In the specimens examined, the diameter of the perithecium 

 varies from 21-35 /x. 



In the following descriptions all of which, except that of L. Podontiae, 

 relate to forms of the " Laboulbeniella" '-type, the cell which replaces 

 cells III and IV in the receptacle is spoken of as "cell III -f- IV." 



Laboulbenia arietina nov. sp. 



Receptacle relatively small, much shorter than the perithecium; 

 olive brown, except the basal cell which is pale and slightly larger than 

 the subbasal; cell III + IV about as long as cell II and half as wide; 

 cell V minute; cell VI well developed, obliquely placed. Insertion- 

 cell olivaceous, small, not deeply blackened. Appendages similar to 

 those of L. Disonychae, the small bases of the outer and inner, opaque, 

 prominent and persistent; giving rise to slender branches two or three 

 times successively branched, olivaceous, their lower septa dark, bent 

 rather abruptly toward and across the base of the perithecium and 

 more or less circinate about it. Perithecium wholly free, relatively 

 long and large, bent toward the appendages, dark brown, the base and 

 tip paler olivaceous; the tip not otherwise distinguished; the apex 

 oblique and prominent, externally oblique; one of the inner lip cells 

 extending upward to form an erect blunt hyaline tipped appendage, 

 its base concolorous with the dark olivaceous apex. Perithecia 100- 

 140 X 20-25 /jl; the terminal appendage 18-25 jj.. Receptacle 60- 

 100 X 24-28 it. Appendages longest about 150-175 fx. Total length 

 to tip of perithecium 160-240 ll. 



On the elytra of Disonycha recticollis Jac, No. 1843, Guatemala, 

 Kellerman; and of D. austriaca Schf., No. 2474b, Port of Spain, 

 Trinidad. 



The four individuals of this peculiar species which have been ex- 

 amined correspond in all respects; the Mexican being only slightly 

 larger than the Trinidad specimens. It is very closely allied to L. 

 Disonychae with which it occurred, but is at once dist : nguished by 

 the terminal appendage of its perithecium. 



Laboulbenia Podontiae nov. sp. 



Receptacle usually small and short, but variable; dull dark brown, 

 the basal cell conspicuously paler dirty yellowish or yellowish brown, 



