378 



THAXTER. — MONOGRAPH OF THE LABOULBEXIACK.E. 



by the two ear-like processes from its rounded tip. The tuberculars corrugations are also more promi- 

 nent and differently placed. Two mature specimens, only, have been examined. 



Laboulbenia notata Thaxter. Plate LVI, fig. 13. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXVIII, p. 47. June, 1902. 



Perithecium straight, erect, hardly more than the tip free, almost or quite opaque distally, paler 

 below; covered with scattered wart-like protuberances; the tip abruptly distinguished, opaque, sepa- 

 rated from the body of the perithecium by a subhyaline zone; the apex broadly hyaline, truncate, some- 

 what angular. Receptacle elongate throughout; the basal cell relatively small, dark brown, somewhat 

 contrasting, the rest pale brownish yellow to dark brown; distally more or less conspicuously marked 

 by scattered brown warts; cell VI very long and slender, overlapping cell II for some distance, the cells 

 above it also unusually elongate; cell III very long and slender, separated from cell II by a narrow hori- 

 zontal septum; cell V relatively small. Insertion-cell somewhat oblique, thick, black, not abruptly 

 narrower than the cells below it. Outer appendage simple, short, the basal cell several times longer 

 than broad, the remainder more slender, brown, contrasting with the basal cell. Inner appendage' con- 

 sisting of a basal cell more than half as long as that of the outer, bearing distally on either side a short 

 simple branch similar to the outer appendage but paler. Perithecia 271 X 55 ;i. Receptacle 1100 X 

 75 fx. Appendages about 185 /i. Total length to tip of perithecium 1150 /<. 



On Tliyreopterus armatus Cast., Madagascar; Berlin Museum, No. 033. 



A very peculiar, coarsely warted form, evidently related to the other members of the series with 

 simple outer appendages, which occur on hosts of this and of allied genera. A single full grown indi- 

 vidual only has been examined which is illustrated in fig. 13. 



Laboulbenia protrudens Thaxter. Plate LIX, figs. 7-8. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXV, p. 196. Dec, 1899. 



Perithecium smoky brown with a tinge of olive, the outer margin concave, relatively small; the tip, 

 only, free from the receptacle, short, broad, subtruncate not abruptly differentiated, bent slightly outward, 

 black except around the pore. Receptacle dirty olivaceous, faintly punctate above cell I which is, except 

 at the base, concolorous with perithecium; cells IV and V forming a somewhat angular protrusion which 

 carries the insertion-cell out free from and beyond the tip of the perithecium. Insertion-cell less than 

 half as broad as the adjacent distal margins of cells IV and V, which form a flat surface in which the 

 insertion-cell is mostly central. Outer appendage arising from a small roundish basal cell, simple or onee 

 branched, the branches short, tapering, nearly hyaline; the basal cell of the inner appendage very small, 

 bearing one or two short tapering hyaline branches. Perithecia 95-110 X 34 ft. Total length to tip of 

 perithecium 280 /x; to insertion-cell about the same measurement; greatest width GO fi. 



On Pericallus cicindeloides MacLeay, Paris Museum, No. 144, Tongou, Java. On mid-elytron. 



The general appearance of this species, owing to the peculiar relation of the perithecium and recep- 

 tacle, recalls that of L. Scliizogenii and L. Morionis* The character of the appendages makes it seem 

 probable that it is allied to some of the simpler forms which occur on this and on related hosts, as for 

 example L. aristata, L. feint is, L. Maylayensis etc., rather than to forms of the "Clivina?" group. 



Laboulbenia Malayensis Thaxter. Plate LIX, figs. 17-18. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXV, p. 185. Dec, 1899. 

 Perithecium clear translucent brown with a slight olive tinge, becoming almost opaque; united to 

 the receptacle, except the abruptly distinguished tip which is hyaline, all but the blackened lips; the latter 

 turned abruptly usually to the right, forming a lateral somewhat irregularly four-lobed papilla in which 

 the hyaline pore is central. Cells I and II of the receptacle about equal in length, nearly hyaline, often 

 distally olivaceous; cells III and IV relatively large, translucent olive-brown, cell IV bulging distally so 

 that the dark but not opaque insertion-cell is turned obliquely toward the tip of the perithecium; cells 



