STRATIGRAPHTCAL DISTRIBUTION. 171 



Family Bronteid^e. Bronteopsis ardmillanensis, sp. nov. ; B. scoiica, Salt. 



Family Lichadid^e. Lichas (Corydocephalus) cf. wesenbergensis, Schm. ; L. (Platylichas) laxatus, 



M'Coy ; L. (Amphilichas) hibernicus, Portl ; L. (Amphiliehcui), sp. ; L., sp. 



ind. (a). 

 Family AoidaspidjE. Acidaspis grayse, Eth. junr. ; A. hystrix, Wyv. Thorn. ; A. lalage, Wyv. Thom. 

 Family Encrinurid^e. Encrinurus punctatus (Briinn.), var. arenaceus, Salt. ; Cybele cf. aspera, Linn. ; 



C. bellatula, Dalm. ? ; C, sp. ind. (a) and (b) ; Dindymene ? sp. ind. 

 Family Calymenid;e. Calymene cambrensis, Salt.; C, sp. ind. (a) and (b). 

 Family Cheirurid^e. Cheirurus gelasinosus, Portl. ; C. gelasinosus, var.?; C. (Nicszkowskia) unicus, 



"Wyv. Thom. ; C. (Sphserbcoryphe) thomsoni, sp. nov ; C. sp. ind. (a) and (b) ; 



Sphserexochus minis, Beyr. ; ? Staurocephalus globiceps, Portl. 

 Family Phacopid^:. Phacops (Pterygometopus) brongniarti, Portl. 



Whitehouse Group. 



Family AGNOSTir^E. Agnostus perrugatus, Barr. ; A. tardus, Barr. 



Family Harpedidje. Harpes, sp. ind. (a). 



Family Trinucleid^e. Trinucleus, sp. ind. (a) to (/) ; Ampyx depressus (Ang.) ? ; A. cf. scanicus 



(Ang.) ; Dionide lapworthi, Eth. and Nich. ; D. richardsoni, sp. nov. 

 Family Olenid^5. Shumardia scotica, sp. nov.; Telephus fractus, Barr. 

 Family Asaphid^:. Stygina latifrons (Portl.) ; Cyclopyge armata, Barr. ; C. rediviva, Barr. ; C. cf. 



gigantea, Barr. ; Bohemilla, sp. ; Illsenus shallochensis, sp. nov. 

 Family Proetid^e. Menocephalus ? (Tlirnquistia) cf. nicholsoni, Reed. 

 Family Lichadid^e. Lichapyge ? problemaiica, sp. nov. 

 Family Acidaspid^e. Acidaspis dalecarlica, Tornq. ? 



Family Encrinurid^e. Encrinurus multisegmentatus, Portl. ; Dindymene cordai, Eth. and Nich. 

 Family Cheirurid.e. Cheirurus (Sphverocoryphe) thomsoni, sp. nov. 



Drummuck Group. 



Family Agnostid^e. Agnostus agnostiformis, M'Coy. 



Family Trinucleid^e. Trinucleus bucklandi, Barr.; Ampyx drummuckensis, sp. nov.; Dionide 



richardsoni, sp. nov. 

 Family Olenid,e. Bemopleurides colbii, Portl. ? ; B. cf. platyceps, M'Coy. 

 Family Asaphid^e. Illxnus bowmani, Salt.?; I. bowmani, var. longicapitatus, Reed; I. extensus, 



sp. nov. ; I. shallochensis, sp. nov. 

 Family Proetid^e. Proelus girvanensis, Eth. and Nich. ; P. procerus, Eth. and Nich. ; Phillipsinella 



parabola, Barr. ; Cyphaspis megalops, M'Coy. 

 Family Lichadid^e. Lichas (Corydocephalus) geikiei, Eth. and Nich. ; L. (Metopolichas) bulbiceps, 

 Phill. var.; L. (Platylichas) laxatus, M'Coy; L. (Conolichas) cf. sequiloba, 

 Steinh. 

 Family Encrinurid^e. Encrinurus multisegmentatus, Portl.; Cybele loveni, Linn., var. nov. girvanensis. 



Dindymene cordai, Eth. and Nich. 

 Family Calymenid^e. Calymene blumenbachi, var. nov. drummuckensis. 

 Family Cheirurid^. Cheirurus bimucronatus, Murch. ; C. (C ' yrtometoims) octolobatus, M'Coy; 



C. (Spluvrocoryphe) thomsoni, sp. nov. ; Staurocephalus globiceps, Portl. 

 Family Phacopid.e. ? Phacops (Pterygometopus) brongniarti, Portl. ; Phacops (Chasmops) bisseti, 



