CONTRIBUTIONS FROM THE CRYPTOGAMIC LABORATORY OF 

 HARVARD UNIVERSITY. — XLI. 



PRELIMINARY DIAGNOSES OF NEW SPECIES OF 

 LABOULBENIACE^E. — 1. 



By Roland Thaxter. 



Received November 3, 1899. Presented November 8, 1899. 



Since the publication by the Academy of the writer's " Contribution 

 toward a Monograph of the Laboulbeniaceae," * a large amount of 

 material of the group has been accumulated, the greater portion of which 

 has been derived from an examination of the entomological collections 

 at the Jardiu des Plantes in Paris, the South Kensington Museum of 

 Natural History in London, the Hope Museum in Oxford, the collection 

 of Italian Carabidse in the Museo di Storia Naturale at Florence, and the 

 National Museum at Washington. It is the writer's intention to publish 

 as soon as practicable a Supplement to the Monograph just mentioned, 

 including figures of all the species ; but although a portion of the illustra- 

 tions are already finished, it will be impossible to complete them without 

 considerable delay, and it has therefore seemed advisable to publish pre- 

 liminary diagnoses of the new species of the genus Laboulbenia, which 

 will be followed shortly by a second paper, including such new forms as 

 belong to other genera. 



Tlie writer desires in this connection to express his great obligations to 

 the gentlemen in charge of the collections mentioned for the courtesies 

 extended to him, due acknowledgment of which will be made in connec- 

 tion with the Supplement already referred to. It should be mentioned 

 also that a set of duplicate preparations has been prepared and will be 

 deposited at Paris, London, and Oxford, so that a majority of the new 

 forms, as well as many others, will be accessible to European students 

 of the group. 



In the following descriptions no comparison of the forms has been 

 attempted in the absence of figures which might render such comparison 



* Memoirs, Vol. XLT. No. 3. 



