Endosclerotium retaining form of host, lateritius, hyphae under 1 mm. diameter, gemmae absent. Stroma up to 5 mm. long, 0.5-1 mm. thick, irregularly arranged in endosclerotium, sometimes light coloured and byssoid; fertile pads lateral or terminal, or on flattened areas of stroma. Perithecia ochraceous, translucent, obpyriform 0.2-0.25 x 0.5 mm. superficial or semi-immersed in stroma, ostiole papillate; perithecial wall pseudoparenchymatous 20 µ thick, cells 2-3.5 µ diameter, cell wall hyaline or lightly pigmented. Asci cylindrical, linear, 120-220 x 2-3 µ, thin-walled, cap globose 0.5-1.5 µ with distinct canal, six to eight spored, spores twisted in fascicle in ascus; pseudoparaphyses evanescent. Spores multi-septate, as long as ascus, part-spores 0.5-l µ diameter. Conidial stage unknown.

DISTRIBUTION. New Zealand.

HABITAT. On Coleoptera pupa.

Endosclerotium lineamenta hospitis sequitur, lateritium, hyphis sub 1 mm. diam., gemmis absentibus. Stroma ad 5 mm. longum, 0.5-1 mm. crassum, in endoselerotio inaequaliter ordinatum, partibus fertilibus, lateralibus vel terminalibus in planis stromatis. Perithecia ochracea, translucentia, obpyriformia, 0.2-0.25 x 0.5 mm. in superficie vel in stromate immersa, ostiolo papillato, pariete perithecii pseudoparenchymato, 20 µ crasso, cellulis 2-3.5 µ diam., parietibus cellularum hyalinis vel leviter tinctis. Asci cylindricales 120-220 x 2-3 µ parietibus tenuibus, capite globoso 0.5-1.5 µ, in sulco longitudine se dividenti, 6-8 sporis, pseudoparaphysibus evanescentibus. Sporae filiformes, multiseptatae, aeque longae atque asci. Sporae divisae 0.5-1 µ diam.

The species has been described from a single specimen. It appears similar to C. novae-zealandiae on Coelostomidea sp. but differs in that perithecia are more slender and the ostiole is swollen and papillate. From other species on Coleoptera it is separated by perithecia being superficially arranged on a loosely aggregated stroma.

Auckland: Waitakere Ra., Swanson, July 1949 (11717) Type coll.