288 



THAXTER. MONOGRAPH OF THE LABOULBENIACE^E. 



side, and by a relatively long straight erect slightly tapering subtending terminal unicellular spine-like 

 process. Spores about 20 X 2 y. Perithecia 100 X 22 y, the terminal process 18 y. Secondary recep- 

 tacles, together, 55 X 18 y. 



On the antenna of a small brown wingless roach (probably Temnoptcryx sp.) taken under stones and 

 bark near the mouth of the Mammoth Cave, Kentucky; Mus. Comp. Zool., No. 1370 Type. On Tem- 

 noptcryx sp., Prouts Neck, Mass., No. 1380, and Georgia, No. 1382, Scudder Collection. On Ischnoptera 

 sp., Georgia, No. 1386, Scudder Collection. 



This species is easily distinguished by the relatively large and long terminal spine, and the elongate 

 nearly cylindrical slender tip of the perithecium. The secondary receptacles are usually paired, but 

 several may develop, generally behind the first two, and appear to arise from secondary fertile branches 

 from the receptacle. The secondary receptacles are sometimes more closely cellular and somewhat 

 larger relatively, than is shown in fig. 7; but the species appears to be otherwise quite constant on all 

 the hosts mentioned. 



Herpomyces Diploptee^e Thaxter. Plate XLI, figs. 1-5. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXVIII, p. 16. June, 1902. 



Male individual; four-celled, the two middle cells roundish-oblong, the distal longer and subcylin- 

 drical, terminated by the usual minute blackish projection; the subterminal and subbasal cells each pro- 

 ducing one or two nearly sessile, or short-stalked, antheridia, with well differentiated slender necks. Total 

 length to tips of antheridia about 50 y. 



Female individual. Primary receptacle similar to male, the subterminal and subbasal cells sub- 

 cylindrical, longer than broad; the fertile branch producing two symmetrically placed secondary recep- 

 tacles, the sterile external cells yellowish, somewhat larger and more distinct, about twelve or more in 

 number; the series extending externally and inferiorly to form a free buttress-like margin, which almost 

 wholly covers the single fertile cell. Perithecium yellowish, straight, nearly erect, the base bulging very 

 slightly; but hardly broader than the ascigerous part, which is relatively large, long, subcylindrical, or 

 slightly inflated; the distal part, relatively short, rather abruptly distinguished; the posterior cell-row, 

 which is external in relation to the host, more prominent, with larger thick-w r alled cells, the fifth from 

 below prolonged to form a long, bluntly tipped, erect, horn-like, subterminal projection, distally curved 

 inward above the short slightly incurved pointed subconical tip. Total length of perithecium (exclusive 

 of base) to tip of process 150 y; to tip 115 y: ascigerous part 70-75 X 28-30 y, distal part to tip 35-40 y; 

 the process, free part, 25-30 y, whole cell 40-44 y. Secondary receptacles both together 55-65 X 25 y. 

 Total length to tip of process 175-185 y. 



On antennae of Diploptcra dityscoides Serv., Ascension Island, South Atlantic; Mus. Comp. Zool., 

 No. 1371. 



The secondary receptacles are paired in all the individuals of this species which have been examined, 

 and are relatively small; the body of the perithecium is nearly isodiametric till it narrows suddenly to the 

 relatively short, abruptly distinguished distal portion, which is terminated by the relatively long curved 

 spine; the tip short and subconical. It is otherwise very similar to H. arietinus. 



Herpomyces Phyllodromi^e Thaxter. Plate XXXIX, figs. 1-2. 

 Proc. Am. Acad. Arts and Sci., Vol. XLI, p. 310. July, 1905. 

 Male individual consisting of four superposed cells: producing distally one or several antheridia 

 directly. Total length about 30 //. 



Female individual. Colorless, the primary receptacle minute, consisting of four subequal cells: 

 the subbasal sending down a branch which furcates to produce a pair of small secondary receptacles, 

 consisting of only two or three vertically elongated cells and each bearing a solitary perithecium. Peri- 

 thecia more or less symmetrically placed, the ascigerous portion slightly inflated, tapering above to the 

 somewhat slender distal portion, which bends abruptly outward from the substratum, diverging but 



