1831 PARASITIC FU^'GI— STEVENS 17 



side, but much less extensive and with but scant clypeus. Irregular locules 

 occasionally develop bearing no asci, but numerous filamentous bodies, 

 Septoria-like, which appear to be conidia. Only one species of Anisochora is 

 given by Theissen and Sydow and that on Ficus. My species differs essen- 

 tially from that and is on a very different host family. 



ScoLECODOTHOPSis Stevens n. gen. 

 Stromata in the leaf mesophyll, without clypeus, not prosenchymatic. 

 Perithecia dothideaceous, isolated, deeply immersed and remaining so, 

 opening by an ostiole to the surface. Ascospores filiform. 



10. SCOLECODOTHOPSIS INGAE Stevens n. sp. 

 [Figures 32 to 34, 95.] 



Spots large 1 to 3 cm. in diameter, roughly circular, yellow or tan- 

 colored, border indefinite, shading into the normal leaf; occupied by nu- 

 merous black regions, 1 to 2 mm. in diameter, appearing black from both 

 sides of the leaf. Stromata in the mesophyll, dense, hyaline. Locules 1 to 

 several in each stroma, about 300m broad and lOO/x deep. Ostiole protrud- 

 ing by a slight, dark papilla, often lateral or oblique. Asci 8-spored, 94 x 

 10m. Spores long, filiform, 18 to 60 x 3m, straight or slightly curved, often 

 slightly thicker near the middle, several-septate. 



On Inga sp. 



British Guiana: Demerara-Essequibo R. R., July 15, 1922, 406 

 (type); Tumatumari, July 8, 1922, 58; Kartabo, July 21, 1922, 510. 



The contents of the cells of the upper epidermis in the region of the 

 stromata are blackened and similar blackening appears between the pal- 

 isade cells, though without any extensive development of mycelium in this 

 region. On the lower surface however the epidermis and adjacent region 

 are packed with a dense mycelial development. The taxonomic position 

 of this fungus is uncertain. The large stromatic development in the meso- 

 phyll with the separate locules appear to warrant its inclusion in the Dothi- 

 deales and the absence of a clypeus and of a palisade hyphal arrangement 

 would place it here in the Eu-Montagnelleae of Theissen and Sydow. 

 This group is on the boundary line between the Dothids and the Sphaer- 

 iaceae and distinction between these groups is difficult. 



In the Eu-Montagnelleae the only genus given with filamentous spores 

 in Ophiocarpella. Indeed filamentous spores either in the Dothids or in 

 the Sphaeriales are rare. Comparison with the specimens of 0. tarda,'' as 

 well as with the description, show the fungus to be generically quite differ- 

 ent. Taking into consideration all of the characters, the fungus appears to 

 me to be best placed in the Eu-Montagnelleae as a new genus. 



' Ellis and Everhart, North American Fungi, no. 1585. 



