Studies in Entomogenous Fungi. T. Fetch. 125 



tered or in groups of up to a dozen (Plate II, fig. 11). In another 

 example, on a caterpillar, the perithecia are situated on the 

 myceliiun which covers it. 



In two other examples, the insect bears a denser weft of 

 h\-phae, and from this there arise erect processes, up to 5 mm. 

 high, usually laterally compressed and up to i mm. broad. These 

 processes are composed of adherent longitudinal hyphae, and 

 thev do not contain any remains of the insect which might ser\*e 

 as a foundation. The perithecia are superficial, crowded to- 

 gether at the apices of the processes. In both these examples, 

 the mvcehum and the processes are white. One specimen bears 

 sixteen of these processes (Plate II,, fig. 12). 



The perithecia are pale yellow when fresh, becoming ochra- 

 ceous or reddish-bro%Mi when old; they are subtranslucent, oval 

 or conoid, with an obtuse or papillate apex, 0-35-0-65 mm. high, 

 and 0-2-0-3 mm. diameter below. The perithecial wall is pruinose 

 above, clothed with pale yeUow h\-phae below; when mounted, 

 it appears pale veUow. membranous, of indistinct structure. 

 The asci are 4-5 /x diameter, and the part-spores cylindrical, 

 tapering shghtly to the roimded ends, 5-7 x 1-1-25 /x. 



The h\-phae in the weft of mycehum are generally regular, 

 septate, i-5-2-5/x diameter, thin-waUed or with a shghtly 

 thickened wall, with occasional oval inflations up to 6 /x broad. 

 The septa are 15-28 /i apart. The h\-phae bear spinulose, 

 hvaline conidia, either globose, 2-5-3-5 /x diameter, or oval, 

 4x3/4. These occur laterally and singly, widely separated 

 along the h\-phae, usually each immediately below a septum, in 

 the position of a lateral branch. In some cases, both a branch and 

 a conidium are produced just below a septumin the main h^-pha. 

 OccasionaUy short lengths of the h\-phae are closely septate, 

 with septa as Uttie as 4)u apart. The lateral branches are fre- 

 quently short, %rith some of the cells inflated, and terminate in 

 an oval cell fiunished with a sohd, acuminate tip. 



The Torrubiella and the Cordyceps forms agree in the structure 

 of the h^-phae, the conidial stage, the colour and structme of the 

 perithecia, and the dimensions of the part-spores. In the 

 Cordyceps form, the mycehiun grows into erect sohd processes, 

 while in the Torrubiella form it is onlv a rather loose weft of 

 h^k-phae This difference in the development of the m^xeUum 

 may possibly be due to differences in the conditions under which 

 these examples grew. The Torrubiella form was collected on 

 h\-ing leaves, but the Cordyceps form was found, unattached, 

 among dead leaves on the ground. 



These specimens of T. ochracea support MoUer's contention 

 that the genus Torrubiella is not distinct from Cordyceps, be- 

 cause of the existence of transitional forms. Nevertheless, it 

 may be considered advisable to retain it for those species which 



