384 REV. J. F„ HULL ON 



OMMATOCEPHEUS, Berl. 



6. Ommatocepheus ocellatus, Mich. 



Cepheus ocellatus (B.O.). 

 Cornwall (B.O.). Mycophilous. 



TRITEGEUS, Berl. 



7. Tritegeus bifidatus, Nic. 



Cepheus bifidatus (B.O.). 67a. 



General, though never frequent. 



CEPHEUS, Koch. 



8. Cepheus tegeocranus, Herm. 66, 67, 68. 



Lamellae ending in two contiguous acute cusps. 

 Common throughout the British Isles. 



9. Cepheus latus, Nic. 



Terminal cusps of lamellae blunt. 

 Epping Forest (B.O.). Oxfordshire (Bagnall). 

 Cheshire (Jackson). 



TEGEOCRANUS, Nic. 



1. Dorsum without a border ... ... ... T. hericins 



Dorsum with a diverse margin 



2. Lamellae with subterminal cusp 

 Lamellte with cusp ... 



3. Lamellos meeting in front ... 

 Lamellae not meeting in front 



10. Tegeocranus hericius, Mich. 



New Forest, on oaks (B.O.). 



11. Tegeocranus dentatus, Mich. 66ab. 



Local; Cheshire, Cumberland, Scotland. 



12. Tegeocranus latus, K. 66, 67, 68. 



Common everywhere on dead wood. 



13. Tegeocranus cepheiformis, Nic. 66, 67c, 68a. 



Very like the preceding, but much smaller ; local. 



TECTOCEPHEUS, Berl. 



14. Tectocepheus velatus, Mich. 66ab, 67, 68. 



Generally distributed. 



T. dentatus 



3 



T. cepheiformis 

 T. latus 



