276 THAXTER. 



secondai\>- appendage, the basal cell of which is rounded, distally nar- 

 rowed, and bears a single peculiar divergent two-celled branch, the 

 basal cell of which is strongly convex on the inner side and separated 

 by a usually conspicuous constriction from the somewhat longer 

 tapering stiff distal cell: the third cell of the receptacle bearing the 

 single perithecium, its stalk hyaline, sometimes longer than the body, 

 mostly straight, the body nearly symmetrically subfusiform; a slight 

 but variable indentation of the outline below the tip on the inner 

 margin, and a rather abrupt indentation below the apex externally; 

 the latter oblique, the outer lip very prominent, extending up over the 

 inner, distally rounded. The terminal cell giving rise to a second 

 secondary appendage on the inner side, the large basal cell of which 

 produces an oblique series of three to five simple three-septate, nearly 

 cylindrical, hyaline branches distinguished by closely set dark basal 

 septa; the whole being entirely similar to the basal cell of the terminal 

 primary appendage, which it overlaps. Spores about 30 X 3.5 /u. 

 Perithecia, body 50-75 X 20 /x, stalk-portion 30-100 X 9-12 m- First 

 secondary appendage, including basal cell, 38-42 /x. Branches of 

 primary appendage, 22-38 X 3.5 /z. 



On the inferior surface of the abdomen and forceps of Chelisoches 

 morio (Fabr.) Nos. 2949 and 3012, Auki, No. 3026, Florida; Solomon 

 Islands. Nos. 3014, Nausori, No. 3013, Viti Leon, No. 3027, Nadari- 

 vata, Fiji Is., Mann Coll., M. C. Z. 



This species is well distinguished by the basal cell of the primary 

 and upper secondary appendage, which resemble the basal cells of the 

 branches of the appendages in forms like Laboidbenia pusilla. The tip 

 of the perithecium, and the lower secondary appendage, are also quite 

 distinctive. 



DiMEROMYCEs APPREssus Thaxter. 



This species was first obtained from east Indian species of Labia, 

 and has since been collected in Trinidad, B. W. I., on a similar host. 

 The West Indian material does not differ essentially from the type. 



Dimeromyces Chaetospaniae nov. sp. 



Male individual similar to that of D. api^ressus. Somewhat larger. 

 The basal cell almost wholly blackened, extending beyond the stalk- 

 cell of the antheridium, and separating a small distal cell which forms 



