174 PROCEEDINGS OP THE AMERICAN ACADEMY. 



once divided branch on either side : the branches of both appendages 

 subhyaline, mostly thin-walled, erect in a compact small tuft, tapering 

 slightly, hardly exceeding the tip of the perithecium. Perithecium 190- 

 225 X 34 fi. Total length to tip of perithecium 540-680 X Gofi; to 

 insertion-cell 375-470 |U. Appendages 175-200 ^u. 



On Uga sp., Paris Mus. No. 151, Acapulco, Mexico. On Ega Sallei 

 Chev., Brit. Mus. No. 705, Biologia Coll., Paso Antonio and Champerico, 

 Guatemala. On elytra. 



Laboulbenia equatorialis nov. sp. 



Perithecium free, hyaline becoming tinged with brown, slender and 

 elongate ; the basal wall-cells forming a well marked though not clearly 

 differentiated hyaline stalk ; a median and subtermiual external promi- 

 nence; the rather broad tip more or less deeply tinged with blackish 

 brown, rather abruptly differentiated and bent outward, the lip-edges 

 hyaline, the inner lip-cells prominent, more deeply suffused. Eeceptacle 

 very long and slender, cell I short, cell II greatly elongated, cells III 

 and VI about equal. Insertion-cell broad, deeply blackened. Outer 

 appendage consisting of a somewhat rounded basal cell, which is hyaline 

 externally, distally suffused with blackish brown, and bears two branches 

 antero-posteriorly ; the outer of which consists of a nearly isodiaraetric 

 basal cell, opaque except its upper inner angle, from which arise two 

 branches, the inner simple, becoming red-brown, its two lower cells in- 

 flated inward, the outer consisting of a small basal cell, opaque, except 

 its inner upper hyaline angle and bearing two branches, an inner dark 

 red-brown and slender, an outer curved outward and upward, more slen- 

 der, deep red-brown, opaque toward the base, usually broken : the inner 

 branch from the basal cell of the outer appendage consists of a basal cell 

 like that of the outer branch, which bears distally two bi-anches red-brown, 

 about equal, the lower two cells inflated inward. The inner appendage 

 consists of a slightly smaller basal cell bearing a branch on either side, the 

 basal cell of each branch shorter, and giving rise typically to two 

 branchlets from the basal cells of which the large, long, slender deep 

 red-brown antheridia are produced in pairs. Perithecia 400-760 (x. 

 Total length to tip of perithecium, average 550 ^ ; longest over 1 mm. ; 

 average breadth 50^. Appendages, longest ^Ibfi. 



On Casnonia sp., Brit. Mus. No. 502, Amazon River. On upper 

 surface of prothorax, at base of elytra and on legs. 



