ii6 Transactions British Mycological Society. 



a conidial form, Isaria cuneispora, on a spider, from the same 

 locality as Torruhiella aranicida. The fungus covered the insect 

 with a white, effused weft of mycelium, composed of interwoven, 

 branching, septate, minutely granular hyphae. The sporiferous 

 hyphae were erect, 600-700 /a high, 2-3 /u, diameter, simple, or 

 branched once or twice, and bore solitary hyaline conidia, 

 elongated conical, 12-14 x 2-2-5 /a, attached at the thicker end. 

 The description of the spore suggests Hirsutella. 



Conidia were recorded by von Hohnel in Torruhiella rostrata. 

 They occurred on ovoid, apiculate, conidiophores on the upper 

 part of the perithecium, and were yellowish, ellipsoid, 3-5 x 3/x. 



Conidia have been observed by me in five species, viz. T. rubra, 

 T. sublintea, T. tomentosa, T. ochracea and 7". flava. In the first 

 of these they are borne laterally on repent hyphae, densely 

 crowded along the hyphae, and are hyaline, oval, 3 x 1-5 /x, or 

 spherical, 2/x diameter. In the second, the conidia are very 

 variable in shape, fusoid, three-septate, ends acute but not 

 produced, 18-24 ^ 4/"'> or five-septate, with tips strongly 

 attenuated and slightly curved, 36-46 x 3-4 ju., or seven-septate, 

 falcate, ends equally curved and attenuated, 43 x 4;Lt, the last 

 being a typical, uniformly curved Fusarium spore; they are 

 borne laterally on simple hyphae, sometimes close together and 

 forming a cluster. In the third and fourth species the conidia 

 occur laterally on the hyphae, and are oval or globose, and 

 spinulose. In the fifth species, the conidiophore is Stilbimt-like, 

 and belongs to the genus Hirsutella. 



Of the species of Torruhiella parasitic on scale insects, 

 T. brunnea v. Keissl. appears to be identical with T. luteorostrata 

 Zimm. It has not been possible to compare the species on scale 

 insects with those recorded on spiders, Lepidoptera, etc., owing 

 to the inaccessibility of the type specimens of the latter. The 

 species which occur on scale insects in Ceylon are different from 

 the species discovered on other insects in that country, viz. 

 T. ochracea Pat. and T. flava Fetch. 



The species on scale insects may be arranged as follows : 



Perithecia purple-red, elongated conoid; T. rubra 

 stroma pinkish becoming pale bro"WTi. 



Perithecia purple-red, elongated flask-shaped ; T. luteorostrata 

 stroma purple-red (rarely white), becoming 

 purple-brown, yellow-brown, or Sanford brown. 



Perithecia pale ochraceous or amber, elon- T. tenuis 

 gated flask-shaped; stroma white. 



Perithecia brownish-yeUow, elongated co- T. sublintea 

 noid; stroma white. 



Perithecia yellow, ovato-conoid ; mycelium T. tomentosa 

 on perithecium with free clavate tips. 



