206 PROCEEDINGS OF THE AMERICAN ACADEMY. 



Laboulbenia tortuosa nov. sp. 



Peritbecium with hardly more than the tip free, relatively small, ex- 

 ternally suffused with smoky brown and concave through the presence of 

 a well defined snbterraiiial hunch, above which the somewhat pointed 

 well defined outwardly oblique blackish-brown tip is abruptly differen- 

 tiated, the lip-edges pale brown translucent. Receptacle very pale red- 

 dish or yellowish, variously bent, sometimes at right angles or at an 

 angle of forty-five degrees above cell II ; cells I and II straight or more 

 frequently cell II curved strongly, while there is often a less pronounced 

 curvature in the opposite direction immediately above it. Insertion-cell 

 horizontal, about opposite the external hunch of the perithecium. Outer 

 appendage consisting of a very large basal and somewhat broader sub- 

 basal cell, the two commonly as broad as or broader than any portion of 

 the receptacle with which they are concolorous ; the upper outer angle 

 of both cells marked by the black insertion of a short simple branch, usu- 

 ally broken off, the subbasal cell surmounted by a small flattish cell which 

 bears a simple terminal branch with blackened base like those developed 

 laterally below it : the inner appendage consists of a very small basal 

 cell which usually produces directly a pair of relatively large antheridia 

 with inflated venters and brown necks. Perithecia 85 X 27 ja. Total 

 length to tip of perithecium about 275 /x. Appendage, to upper blackened 

 septum 50 /n, by 28 /x wide. 



On Pa chyteUs festaceus Horn, U. S. National Museum, Arizona. Along 

 the adjacent inferior margins of the thorax and jDrothorax, on left side. 



Laboulbenia Trichognathi nov. sp. 



Perithecium free, generally straight, long, narrow and of nearly equal 

 diameter throughout to the base of the rather abruptly differentiated tip, 

 (sometimes however shorter, stout and slightly inflated,) pale yellowish 

 or becoming rather deep, evenly translucent smoky brown ; the basal wall- 

 cells forming a very short scarcely noticeable stalk ; the tip obliquely black 

 below the rather coarse and prominent hyaline lips. Receptacle gener- 

 ally very long and slender, pale yellowish, the basal cell tinged with 

 brown ; cells IV and V amber or often becoming wholly amber-brown or 

 smoky brown ; cells IV and V large, prominently marked by short 

 transverse lines or patches which are less numerous and distinct on the 

 other cells. Insertion-cell carried out free from the perithecium by the 

 enlargement of cell V, well differentiated, black. Outer appendage con- 

 sisting of a series of obliquely superposed cells three to ten in number. 



