CONTRIBUTIONS FROM THE CRYPTOGAMIC LABORATORIES 

 OF HARVARD UNIVERSITY. No. LXXVII. 



NEW INDO-MALAYAN LABOULBENIALES. 



By Roland Thaxter, 



Received May 24, 1915. Presented May 12, 1915. 



The new forms which are described in the present paper have been 

 obtained from several sources. A portion of the Javan material was 

 found on insects purchased from the late M. Rouyer, and a small 

 number were also obtained from certain hosts kindly collected for 

 me by Dr. W. P. Thompson. All the forms from Samarang, which 

 include a great majority of the Javan species, were partly found on 

 miscellaneous insects which ]Mr. E. Jacobson was so kind as to have his 

 assistant collect for me, while the infested crickets were discovered 

 by Mr. Jacobson himself, who is thus the first to have observed that 

 hosts of this nature were bearers of Laboulbeniales, and to whom 

 I am especially indebted for this noteworthy addition to our knowledge 

 of the group. Through the very great kindness of Mr. T. Fetch of the 

 Peradeniya Gardens, to whom I am under deep obligations for his 

 trouble in personally collecting miscellaneous insects which he has 

 sent me for examination, our knowledge of the Ceylon forms has been 

 very materially increased. A few specimens have also been obtained 

 from the Museum of Comparative Zodlogy in Cambridge. I am 

 further indebted for determinations of Staphilinidae to Dr. Max 

 Bernhauer; of the forficulids to Dr. Malcolm Burr; of the other 

 Orthoptera to Mr. A. N. Caudell, and for certain generic determina- 

 tions to Mr. Schwartz and Mr. Barber of the National Museum. To 

 all these gentlemen I desire to express my obligations for the trouble 

 which they have taken in my behalf. 



The new and very striking forms on Gri/Uus and Gri/Uofalpa collected 

 by Mr. Jacobson, have a special interest since not only are these new 

 types of hosts for the Laboulbeniales, but the species which infest 

 them are unusually interesting and peculiar. The two forms on 

 GnjUus, which I have placed in the genus Laboulbenia, are noteworthy 

 in that they combine the characters of this genus and of Ccraiomyces in 

 such a way as to definitely confirm my previously expressed opinion 



