NEW LABOULBENIALES. 681 



the apex more than half as long, not at all distinguished, distally 

 abruptly compressed with rounded margins, the broad termination 

 bearing four minute abruptly distinguished papillate lip-terminations, 

 which are rather distant, and almost symmetrically placed around 

 the pore. Spores 30 X 3.S m- Perithecia 120-140 X 38-42 m, maxi- 

 mum 150 X 48 )u. Appendage about 55 /z. Receptacle 70-100 X 

 16 M> maximum 120 X 20 /j.. Total length to tip of perithecium 220- 

 280 ;ti, maximum 310 /x. 



On legs and wings of Psilopa spp., No. 1725, (Type), Mandeville; 

 Nos. 1855 and 1875, Balaclava, Jamaica, W. I. On base of wing of 

 Ochtheroidea glaphropus Loew., No. 1710, Mandeville, and No. 1920, 

 Porus, Jamaica. 



This species is not unlike S. rugosus in appearance, but differs in 

 its four-celled appendage and abruptly compressed papillate apex. 

 The surface of the perithecium is usually rather finely granular- 

 mottled, sometimes with a tendency to produce slightly elevated 

 mottled patches about as large as the verrucosities of S. rugosus. In 

 older specimens the wall-cells of the venter may show a slight ob- 

 liquity, and their distal ends may be somewhat prominent, forming 

 an indistinct ridge below the spreading base of the neck. 



Stigmatomyces micrandus Thaxter, var. Atissae nov. var. 



I have separated under this varietal name a form which grows on 

 very minute dark species of Atissa in the West Indies, occurring more 

 often on the upper surface of the head, or the adjacent superior sur- 

 faces of the thorax, or on the bases of the antennae, usually forming a 

 conspicuous group in these positions, while not infrequently it may be 

 found growing on the legs. I have never seen it, however, on the 

 abdomen which was the position occupied by the type-form on its 

 undetermined papuan host. The general form of the variety and its 

 peculiar three celled appendage correspond closely to that of the type; 

 the venter of the perithecium is either smooth or finely rough-granular, 

 never verrucose, and the granulation may involve the neck as in »S. 

 Psilopac. In many cases the junctions of the wall cells of the venter 

 are clearly indicated by slightly twisted ridges which, however, can- 

 not always be clearly distinguished. The conformation of the distal 

 portion of the perithecium is similar in general to that of the type, 

 although the peculiar modification of the apex about the pore is less 

 well marked than is indicated in the original figures (Monograph, II, 



