THAXTER. — 



MONOGRAPH OF THE LA BOULBEN [ACE E. 



207 



the blackened base of the inner appendage, lying between the latter and the tip of the perithecium ; the 

 lower appendicular*; eell well defined, about two thirds as long as the subterminal cell, which projects 

 slightly above and bears the free terminal appendiculate cell, which is hyaline, about equal to the lower 

 in length, its inner margin nearly straight, its outer margin curved abruptly inward to the base of the 

 obliquely distinguished, blackened, narrow, erect terminal portion, from which the appendage has been 

 broken in the types. Perithecium relatively large, of nearly equal diameter throughout; the tip broad 

 with a bluntly rounded apex; a short erect contrasting brown prominence formed by the left posterior 

 lip-cell, toward the base of which the inner (anterior) lip-cells are curved in a characteristic fashion, so 

 as partly to overlap it. Spores about 75 X 5 y. Perithecium 125 X 36 fl. Receptacle! 250-270 y. 

 Total length to tip of perithecium 255 y. 



On the superior surface of the tip of the abdomen of Orectogyrus (jOrectochirus) specular is Aube. 

 Africa. Berlin Museum, No. 80G. 



As has been previously mentioned, this and the following species are at least aberrant, and probably 

 should be placed in a genus by themselves. The spores of both seem to be abnormally placed in the 

 asci, the short segment being uppermost, but it is not unlikely that, as in some other species, the base 

 of the spore is shortest, and if this is the case it is probable that a terminal appendage of some length 

 will be found in uninjured specimens. With the exception of species of Laboulbenia no other forms 

 have been found on the Gyrinida?. The label Orectogyrus appears to have been a slip for Oreetochirus. 

 The species is therefore misnamed. 



Chitonomyces jEthiopicus Thaxter. Plate XXXIV, figs. 21-22. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXV, p. 430. April, 1900. 



Perithecium red-brown, darker on the inner side, with faint transverse striations, somewhat curved; 

 the inner lip-cells producing at the left a blackish brown projection directed obliquely outward across 

 the tip and resembling a canine tooth, the inner lip-eell on the left producing a much smaller, blackish, 

 inconspicuous, tooth-like projection; the distal end of the lower marginal cell of the receptacle abnor- 

 mally developed, bulging inward against and almost over-topping the subterminal appendiculate cell, 

 the greater portion of the margin of this outgrowth nearly horizontal and extending from the apex of 

 the perithecium to the insertion of the subterminal appendage which is sunk in an abrupt depression 

 between it and the base of the terminal cell of the receptacle. Receptacle nearly hyaline, strongly curved 

 throughout, consisting of a long basal and subbasal cell which appear to lie side by side for nearly their 

 whole length, the lower marginal cell of the distal portion almost obliterated by the body of the peri- 

 thecium, the subterminal cell large triangular, the terminal cell about as large, and separated from it 

 by a nearly horizontal septum; wholly free, abruptly geniculate, the distal portion much narrower, erect 

 and black (the tip broken), abruptly distinguished above an external bulge of the portion below it. Peri- 

 thecia 128 X 40 y, the tooth-like projection 18 y. Receptacle to tip 275 y, the basal and subbasal cells 

 including the foot 140 X 35 y. Total length to tip of perithecium 255 y. 



On elytra of Oreetochirus specidari? Aube, Paris Museum, No. 100, Gold Coast, Africa. 



Hydr^eomyces Cnemidoti Thaxter. 

 This species which is common on Cnemidoti in New England has also been obtained from an unde- 

 termined species of the same genus taken at Eustis, Florida. It remains the sole representative of the 

 genus. 



ENARTHROMYCES Thaxter. 

 This very characteristic and remarkable genus is still represented by a single species, E. Indieus, 

 which has been obtained from the following additional localities. On Phcropsophus sp., Hong Kong, 

 Hope Collection, No. 239. In the Paris Museum on several undetermined species of Phcropsophus 

 from Asia; on P. Latovici Asia, No. 50; on P. marginalis India, No. 118 bis; on P. Yezoensis, Ken-Si, 

 China, No. 155; on P. dipsicollis, Cochin China, No. 114. In the British Museum; on P. fusdcollis, 



