THAXTER. — MONOiJHAIMI OF THE LABOULBENIACEjE. 



120 



MOSCHOMYCES Thaxter. 



M. insignia, the only known species of this genus, appears to I" - ;i rare form; bui this is perhaps 

 owing to the fact that I have been unable to obtain its host in any considerable numbers. It has been 

 collected in one instance on Simrutt longiu.srulu.s at Kitterv Point, Me., on one of many specimens of the 

 host examined. As I have previously pointed out, it may prove only a very curious development of 

 (Jomp.somycr.s, to which it is at least very closely allied. As in the ease of the genus last mentioned, it 

 has seemed best to regard the basal stalk-cells of the perithecia as branches from the receptacle, from 

 which the perithecia originate as well as the peculiar sterile branches which subtend it, rather than as 

 parts of a compound pcrithceial stalk-cell. 



Ch.ktomvcf.s PlNOPHILI Thaxter. 

 Three specimens agreeing in all respects with the types of this species were found in the Biologia 

 Collection at the British Museum on an undetermined species of Pinophilus, No. 765, from Chontales, 

 Nicaragua. The species still remains the unique type of a genus not closely approached by any other 

 thus far described. It is clearly distinguished by its simple axis of superposed cells one or more of which 

 immediately below that which bears the perithecium, give rise to branchlets. No other form has peri- 

 thecia and branches similarly associated on a simple axis of this nature, which appears to be entirely 

 primary, and not in any part a secondary development from a primary receptacle such as is seen in 

 Rliacliomyces. 



ECTEINOMYCES Thaxter. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXVIII, p. 26. June, 1902. 



Receptacle consisting of a single series of superposed cells, becoming variable in number as a result 

 of intercalary division; bearing distally a single perithecium and an antheridial appendage. The ap- 

 pendage consisting of a series of superposed cells, several of which, above its basal or stalk-cell, bear 

 simple antheridia, which are cut off distally on one or both sides, by oblique septa. 



This genus, although it lacks any very striking characteristic, is one of the rare instances in the family 

 in which the primary receptacle becomes multicellular through intercalary divisions of its cells. The 

 appendage in young specimens consists of several superposed cells, the lower of which cut off simple an- 

 theridia distally by an oblique septum, while later they develop a variable number of filamentous branches. 

 The genus appears to bear some resemblance to Compsomyces in the character of its perithecium and 

 antheridia, and also to Hydrophilomyces and Misgomyces in the presence of intercalary growth, and in 

 the general relations of its parts. 



Ecteinomyces Trichopterophilus Thaxter. Plate LI, figs. 15-18. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXVIII, p. 26. June, 1902. 



Wholly hyaline with the exception of the typically blackened foot. Receptacle varying from a very 

 long and slender to a comparatively short and stout form, the number of superposed cells varying in 

 number from five to fifteen, or rarely more; the cells often hardly larger distally; the series as a whole 

 often irregular, the successive cells irregularly unequal in length. Appendage similar to the receptacle, 

 consisting of five or six superposed cells; the basal cell united to the stalk-cell of the perithecium; the 

 subbasal cell sterile; two or three of the cells above it bearing one to two antheridia each, which may be 

 replaced by sterile branches similar to those which always arise from the terminal cells of the series, both 

 laterally and terminally. Stalk-cell of the perithecium short, not distinguished from the basal cells; the 

 body of the perithecium oblong or oval, tapering abruptly distally to form the slender well-distinguished 

 tip, which tapers slightly to the blunt unmodified apex. Spores 25 X 3 p.. Perithecia 55-65 X 22-2S 

 Appendage including branches 75-100 fi. Receptacle 25-140 X 7-12 it. Total length to tip of perithe- 

 cium 100-220 p. 



