MONOGRAPH OF THE LABOULBENIACE2E. 



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Genus VIII. Peyritsciiiella. Asymmetrical receptacle consisting of several superposed 

 transverse series of cells above its one or two basal cells ; antheridium single, lateral. Pcri- 

 thecia free. 



(1) P. curvata Tbaxter, on Platynus cincticollis Say, N. America. 



(2) P. minima Tbaxter, on Platynus cincticollis Say, N. America. 



(3) P. geminata Tbaxter, on Pterostichus luctuosus Dej., P. patruelis Dej., P. erythropus 



Dej., N. America. 



(4) P. nigrescens Tbaxter, on Philonthus debilis Grav., N. America. 



Gbnus IX. Dichomyces. Symmetrical receptacle of several superposed transverse series 

 of cells, tbe basal cell single ; a pair of antberidia on tbe subterminal series. Peritbecia free. 



(1) D. furciferus Thaxter, on Philonthus debilis Grav., N. America. 



(2) D. inaequalis Thaxter, on Philonthus debilis Grav., N. America. 



(3) D. infectus Thaxter, on Xantholinus obsidianus Melsh., N. America. 



(4) D. princeps Thaxter, on Philonthus sordidus Grav., N. America. 



Genus X. Hydr.eomyces. Receptacle asymmetrical, its distal portion united to the peri- 

 thecium ; its three basal cells superposed. Aquatic. 



(1) H. Halipli Thaxter, on Haliplus ruficollis De G., Cnemidotus mtiticus Lee, N. 

 America. 



Genus XI. Ciiitonomyces. Receptacle asymmetrical, its distal portion united to the peri- 

 theciura ; its two basal cells superposed. Aquatic. 



(1) C. paradoxus (Peyritsch), on Laccophilus maculosus Germ., Laccophilus sp. indet., N. 



America; L. hyalinus Dej., L. minutus Sturm., Europe. 



(2) C. appendiculatus Thaxter, on Laccophilus maculosus Germ., N. America. 



(3) C. distortus Tbaxter, on Laccophilus maculosus Germ., N. America. 



(4) C. spinigerus Thaxter, on Laccophilus maculosus Germ., N. America. 



(5) C. uncigerus Thaxter, on Laccophilus maculosus Germ., N. America. 



(6) C. melanurus Peyritsch, on Laccophilus hyalinus Dej., L. minutus Sturm, Europe. 



(7) C. marginatus Thaxter, on Laccophilus maculosus Germ., Laccophilus sp. indet., 



Hydroporus spurius Lee, N. America. 



(8) C. rhyncostoma Thaxter, on Hydroporus spurius Lee, Laccophilus maculosus Germ., 



N. America. 



(9) C. lichanophorus Thaxter, on Laccophilus maculosus Germ., N. America. 



(10) C. uncinatus Thaxter, on Laccophilus maculosus Germ., Hydroporus spurius Lee, N. 



America. 



(11) C. affinis Thaxter, on Laccophilus macidosus Germ., Hydroporus sp., N. America. 



(12) C. hyalinus Thaxter, on Laccophilus maculosus Germ., N. America. 



(13) C. simplex Thaxter, on Laccophilus maculosus Germ., Hydroporus spurius Lee, and 



sp. indet., N. America. 



(14) C. Bidessarius Thaxter, on Bidessus granaries Aube, N. America. 



(15) C. borealis Thaxter, on Desmopachria convexa Aube, N. America. 



(16) C. aurantiacus Thaxter, on Desmopachria convexa Aube, X. America. 



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