THAXTER. — LABOULBENIALES PARASITIC ON CHRYSOMELIDAE. 47 



Ceraiomyces minisculus nov. sp. 



External margin, from tip of foot to apex, almost an arc of a circle, 

 the corresponding opposite margin almost straight except for the 

 slight protrusion of cell III. Basal cell of the receptacle triangular, 

 about as broad as long, yellowish; the subbasal cell flattened distally, 

 oblique below the base of the perithecium with which it is concolorous 

 and from which it is hardly distinguishable; cell III longer than the 

 portion of the receptacle below it, very narrow and hardly distinguish- 

 able from the body of the perithecium. Cells of the appendage 

 minute, only one being distinguishable, and bearing two relatively 

 large brownish antheridia, the outer spinose externally below its neck. 

 Perithecium somewhat less than half free above the insertion of the 

 appendage, relatively large, stout, very deep brown, barely translu- 

 cent, the apex blunt, the hyaline lip-edges subtended by blackish 

 shades. -Perithecium 70 X 26 /x. Cells I— II, 18 /x long by 21 xx broad; 

 cell III, 30-32 X 4 /x. Appendage, including antheridia, 22 xx. Total 

 length to tip of perithecium 90-95 ax. 



On antennae of Chaetocnema nana Jac, No. 1755, Balaclava, 

 Jamaica, W. I. 



This minute species is most nearly related to C. obesus from which it 

 differs in the structure of its receptacle, and the form and position of 

 its perithecium. The appendage is so reduced that little remains 

 beside the antheridia. 



Ceraiomyces dislocatus nov. sp. 



Cells I and II nearly hyaline or becoming faintly yellowish, the 

 former about five times as long as it is broad, abruptly enlarged above 

 the small pointed foot, distally bent abruptly inward; the septum 

 separating it from cell II thus more or less oblique and sublateral, 

 marking a constriction, and giving to this part of the receptacle a 

 more or less distinctly geniculate habit; cell II roughly isodiametric, 

 bulging slightly externally, small, separated obliquely from the base 

 of the perithecium; cell III relatively broad and distinct, concolorous 

 with the perithecium. Appendage seated on a dark, somewhat 

 oblique septum, hyaline; its two or three cells very small and indis- 

 tinguishable at maturity; bearing two inner and one or rarely two 

 outer slender faintly brownish antheridia. Perithecium more than 

 half free above the insertion of the appendage, deeply suffused with 



