336 



THAXTER. MONOGRAPH OF THE LABOULBENIACE.E. 



The individual represented in fig. 13 was found on S. geniculatus Ehr., from England, and was at first 

 given ;i specific name corresponding to the host; but although an examination of abundant material may 

 show essential and constant differences, I have preferred to place this form also provisionally under the 

 present species. 



Of the forms on Anophthalmias the following have been examined: British Museum No. 660 on 

 A. Doriae Fairm., Liguria; on A. Schmidtii Sturm., Carniola. Paris Museum on A. Caranti Sell., AJpes 

 Maritimes, Italy; No. 188 on A. Dalmatinus Mill, Dalmatia; No. 189 on A. Schaumii Schm., Haute 

 Carniola. Berlin Museum No. 875 on A. Motschulskyi Schm., Carniola; No. 876 on A. Dalmatinus 

 Mill., Dalmatia; On species of Trechus as follows: British Museum; No. 639 on T. micros Hubst., 

 Hungary, also in Hope Coll., No. 323, Europe. Berlin Museum, No. 880 Trechus sp., Macugnaga 

 Italy; No. 881 on T. Iwvipcnnis Heer., Macugnaga, N. Italy; No. 879 on T. slrigipennis Kies., Monte 

 Rosa, Italy; on Trechus sp. Canada; No. 878 on T. paludosus Prussia. 



On species of Stilicus, British Museum: No. 447 on S. geniculatus Ex., Cowley, England; No. 446 

 on S. sim His Er., Rathay, England. Berlin Museum; No. 837 on S. orbiculatus Payk, Europe. 



Laboulbenia (Edodactyli Thaxter. Plate LIV, fig. 10. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXV, p. 189. Dec, 1899. 



Perithecium free except at the base, pale transparent amber-yellow, somewhat inflated at the base 

 and tapering gradually thence to the slender tip, a blackish shade below the nearly hyaline lips which are 

 turned slightly outward. Receptacle amber-colored, deeper anteriorly, cell II sometimes elongate, cell 

 VI very short, so that the base of the perithecium comes opposite cell III. Insertion-cell and the inner 

 margin of cell V usually free from the perithecium. The outer appendage simple, divergent, the basal 

 cell very large; the basal cell of the inner appendage much smaller, bearing one to two short branehlets. 

 Spores 35-40 X 41 \i. Peritheeia 120 X 35 fi. Total length to tip of perithecium 175-380 fi (longest); 

 to insertion-cell 115-275 a. 



On elytra of (Edodactylus fuscobrunncus, Fairm., Brit. Mus., No. 397, Chile. 



The material of this species is unfortunately very scanty, the typical form being represented in fig. 

 10, and recalling L. Atlantica, although its color, the conformation of the perithecium and of the recepta- 

 cle, as well as its slender tapering colorless outer appendage, serve to distinguish it. 



Laboulbenia Atlantica now sp. Plate LIII, figs. 16-17. 



Perithecium dark olivaceous brown, short, stout, about two thirds free from the receptacle; the free 

 portion subsymmetrical, or curved outward; the tip hardly distinguished, bent slightly outward, with 

 darker subterminal suffusions. Receptacle short and rather stout; cells I and II subequal pale dirty yel- 

 lowish, the distal half, or less, of the latter united laterally to cell VI; cells III and IV subequal, short 

 and broad, and concolorous with the perithecium. Outer appendage yellowish, simple, elongate, diver- 

 gent, tapering but slightly, rather closely septate, lower cells slightly constricted at the septa; basal cell 

 of the inner appendage bearing a short one-celled branch on either side, from which arise a few antheridia. 

 Perithecium 90 X 70 u. Receptacle 110 fi. Greatest total width 58 /x. Longest appendage 380 [i. 



On elytra of Laihrobium multipunctatum Gz., Santa Anna, Madeira; Paris Museum No. 205. On 

 Gargus Schaumii Wolk, Arribentes, Madeira, Paris Museum No. 212. 



Although the hosts of these two forms belong to different families of Coleoptera, I am unable to sepa- 

 rate them specifically, the specimens on Gargus differing only in the slightly greater relative length of the 

 basal and subbasal cells and in a slight tendency to general curvature in the free portion of the perithe- 

 cium. The material on Laihrobium is taken as the type, one of the individuals from this source being 

 represented in fig. 16, while figure 17 represents an individual from Gargus. The species is allied to L, 

 subtcrranea and L. Qidodactyli, but seems sufficiently distinct from either. 



