172 TRILOBITES OF GIRVAN. 



SILURIAN. 



Mulloch Hill Group. 



Family Asaphid.e. Illienus macallumi, Salt. ; I. nexilis, Salt. ; I. thomsoni, Salt. 



Family Proetid^e. Proetus latifrons, M'Coy ; P. stokesi, Murch. ; P. cf. obconicus, Liudstr. ; P., sp. 



ind. (a) ; Cyphaspis megalops, M'Coy ? 

 Family Lichadidje. Lichas (Corydocephalus) scutalis, Salt.; L. (Platylichas) grayi, Fletch., var. 



nov. scoticus ; L grayi, var. ind. 

 Family Acidaspid^e. Acidaspis callipareos, Wyv. Thorn. ; A. coronata, Salt. ; A. deflexa, Lake. 

 Family Encrinurid.e. Encrinurus pundatus (Briinn.), var. arenaceus. 

 Family Calymenidje. Calymene blumenbachi, Brong. 

 Family Cheirdrid^;. Deiphon forbesi, Barr. 

 Family Phacopid^e. Phacops (Phacopidella) elegans (Sars and Boeck). 



Sattgh Hill Group. 



Family Asaphid,e. Illeemis semulus, Salt. var. ; I. barriensis, Murch. ; I. thomsoni, Salt. ; /. nexilis, 



Salt, 

 Family Proetid.e. Proetus latifrons, M'Coy; P. stokesi, Murch. ; P. cf. obconicus, Liudstr. 

 Family Bronteid^:. Bronteus andersoni, Eth. aud Nich. 

 Family Lichadid-e. Lichas (Corydocephalus) scutalis, Salt. ; L. (Platylichas) grayi, Fletch., var. nov. 



scoticus ; L. (Metopolichas) aff. marginatus, Liudstr. 

 Family Acidaspiime. Acidaspis callipareos, Wyv. Thoiu. ; A. coronata, Salt. 

 Family Encrinurid^:. Encrinurus pundatus (Briinn.), var. calcareus and var. arenaceus. 

 Family Calymenidje. Calymene blumenbachi, Brong. 

 Family Cheirurid^e. Cheirurus bimucronatus, Murch. 

 Family Phacopidje. Phacops (Phacopidella) doumingix, Murch.?; P. (Phacopidella) elegans (Sars 



and Boeck). 



Camregan Group. 



Family Harpedid.e. Harpes, sp. ind. (b). 



Family Asaphid^:. Illvenus semulus, Salt. var. ; I. barriensis, Murch. ; I. thomsoni, Salt. 



Family Proetid.e. Proetus pseudolatifrons, sp. nov. ; P. stokesi, Murch. 



Family Bronteid^. Bronteus andersoni, Eth. and Nich. 



Family Lichadid^e. Lichas (Platylichas) grayi, Fletch., var. nov., scoticus. 



Family Acidaspid^;. Acidaspis coronata, Salt. 



Family Encrinurid^e. Encrinurus pundatus (Briinn.), var. calcaretis. 



Family Cheirurid^;. Cheirurus bimucronatus, Murch. 



Family Phacopid^e. Phacops (Phacopidella) elegans (Sars and Boeck). 



Penkill Group. 



Family Asaphid.e. Illsenus semulus, Salt, aud var.; /. barriensis, Murch. ; ? /. nexilis, Salt.; I. 



thomsoni, Salt, 

 Family Pr.jetid.e. 1' rad iis stokesi, Murch. 



