MONOGRAM OF THE LABOULBENIACEiE. 



321 



ward by cell V free from the perithecium. Receptacle sometimes short, more often very long 

 through the elongation of cell II, the distal portion reduced, usually blackish brown, while the 

 two basal cells are hyaline. Perithecia, 135-160 X 50 p. Outer appendage, longest, 1065 p ; 

 average, 725 fi. Total length to tip of perithecium, 220-480 /* ; average, 375 /tt. 



On Anophthalmia Menetriesii Motsch., in limestone caves, Kentucky ; A. pusio Horn, West 

 Virginia. On A. Motschulshji Schm., Carniola, Austria. 



A peculiar and variable species. Forms occurring on the jaws of the host (a blind cave 

 beetle) are short and compact, while others, especially those occurring on the lower surface of 

 the abdomen, are very elongate, The European specimens are small and rather slender, but can 

 hardly be separated from the American material. 



Laboulbenia pebpendicularis nov. sp. Plate XIII, figs. 15-18. 



L. truncata pro parte : Proc. Am. Acad. Arts and Sci. Vol. XXVII, p. 45. 



Hyaline, becoming more or less suffused with olive brown. Perithecium brown, slightly 

 inflated toward the base, the distal portion often long and narrow, the tip bent inward, its apex 

 broad and flat. Outer appendage rigid, irregular ; its basal cell long, followed by two cells, the 

 upper smaller, often inflated, usually followed by a single cell, which bears terminally two rather 

 short branches ; inner appendage consisting of a rather large basal cell, the whole inner face of 

 which is occupied by the bases of two long branches set one above the other, projecting across 

 and beyond the perithecium at right angles to the outer appendage ; one or both once branched 

 near their tips and bearing a single antheridium from their basal cells. Receptacle distally 

 rather abruptly expanded in the region of cell VI, becoming brownish, the darker distal portions 

 sometimes obscurely punctate. Spores, 65-78 x 5^. Perithecia, 120-150 x 45-50 /j,. Append- 

 ages, outer (longest), 370-400 ^; inner, longest, 350-450. Total length to tip of perithecium, 

 250-330 n. 



On undetermined species of Bembidium, Connecticut, Virginia (Pergande), Washington 

 (Miss Parker). 



This species was at first considered a more fully developed type of L. truncata, which is 

 undoubtedly its nearest ally. The differences indicated by the above description seem, however, 

 sufficiently constant to separate it without difficulty, although it is barely possible that L. trun- 

 cata may be the same species greatly modified by its position of growth. The peculiar mode of 

 development by which its inner appendage is made to cross the perithecium at right angles is 

 quite unique. The outer appendage is almost invariably broken off above its third cell, as 

 shown in fig. 15 ; and the branches of the inner appendage are rarely perfect. But one of these 

 branches (the upper) usually produces its single antheridium, the second, as well as all the por- 

 tion of the first above the antheridium, being developed after fertilization. Fig. 16 represents 

 the single inner appendage shortly before fertilization has been effected, the short terminal 

 unicellular branch at the right subsequently growing into the elongate appendage shown in fig. 

 15. There is some variation in the form of the perithecium, which may be more distinctly nar- 

 row toward its extremity, and the latter may be more strongly bent inward than is shown by 

 the specimen figured (fig. 15). The species has been observed only on or at the base of the 

 anterior pair of legs. 



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