THAXTER. — ARGENTINE LABOULBENIALES. 199 



Laboulbenia subinflata nov. sp. 



Receptacle rather lon<j hut variahle, cells III and I\' heeoniiiiK 

 oHvaceous, the rest pale dull ^eUowish, the upper half or more of cell 

 II characteristically swollen, broader than the receptacle above it, 

 from which it is separated by a distinct indentation on one or both 

 sides; cell III relatively large, sometimes twice as large as cell IV, the 

 outer half of which lies external to the insertion-cell, below which it 

 is thus prominent and oblicjuely rounded outward. The insertion- 

 cell black, rather thick and narrow; the basal cell of the outer append- 

 age several times as large as that of the inner, the subbasal cell similar 

 and subeciual, both becoming olivaceous; the latter bearing regularhy 

 two parallel branches distally, the outer usually shorter; the whole 

 appendage erect or slightly divergent and reaching a short distance 

 beyond the tip of the perithecium: the small basal cell of the inner 

 appendage bearing a short erect branch on either side, from the base 

 of which arises a unicellular antheridial brarichlet terminated by two 

 to three antheridia. Perithecium relatively small, the lower wall-cells 

 and the upper basal cells becoming tinged with olive, distinguished 

 from the part above by a more or less pronounced elevation, later 

 obliterated, from which a darker area of olive-brown extends hori- 

 zontally across the perithecium, which above it is pale amber-brown; 

 the tip relatively narrow, abruptly distinguished externally above a 

 conspicuous rounded prominence, its concave external margin broadly 

 blackened; the lips outwardly oblique, coarse, the inner more promin- 

 nent, rounded, subtended by a blackish patch. Spores 55X5 ju- 

 Perithecium 175-185X45-50 M- Receptacle 310-415X62-78 m; larg- 

 est subbasal cell 187X75 yu. Appendages 200 ^t, longest 215 /i. 

 Total length to tip of perithecium 350-585 /i. 



On the left margin of the prothorax, superior, of " Argufor Bonaricn- 

 sis Dej."; Buenos Aires, Nos. 1512 and 1962; Llavallol, No. 2032. 



This species was found on a number of individuals of its host, and 

 always in exactly the same position, sometimes in company with all 

 of the six other species, including L. polyphaga, which occur on this 

 host, from which it may be easily distinguished by its perithecium, 

 appendages and inflated subbasal cell. 



Laboulbenia Bonariensis nov. sp. 



Large, long, slender, and as a rule evenly curved from base to apex. 

 Receptacle becoming more or less evenly suffused with olive l)rown. 



