438 



THE SILURIAN ROCKS 



Ardmillan ; Threave. 

 Drummuck. 

 Mulloch Hill. 



Bellerophon trilobatus, Sow. 

 B. Urei (?), Flem. 



B. wenlockensis, Sow. 

 Bucania profunda, Hall. 

 Chelodes (Helminthochiton) 



Grayae, Woodw. 

 Cyclonema carinatum, Sow. 



C. crebristria, M'Coy. 



Cyrtolites euryomphalus, Linds. Newlands. 

 C. orbiculus, Linds. Balclatchie. 



Ecculiomphalus Bucklandi, 



Portl 



E. laevis, Sow. 

 E. minor, Portl. 

 E. scoticus, M'Coy. 

 Euomphalus funatus, Sow. 

 E. granulatus, Portl. 

 Fusispira elongata, Hall. 

 Holopea lymnaepides, Forbes. 

 H. paludiniformis, Hall. 

 Holopella obsoleta, Sow. 

 H. tenuicincta, M'Coy. 

 Loxpnema elegans, M'Coy. 

 L. simiosum, Sow. 

 Maclurea Logani, Salt. 

 M. Maccoyi, Salt. 

 M. (Ophileta) macromphala, 



Craighead. 



Threave Glen. 

 Shalloch Mill. 

 Ardmillan. 



Craighead ; Shalloch Mill. 



Craighead ; Shalloch Mill. 



Ardmillan. 



Ardmillan. 



Shalloch Mill. 



Mulloch. 



Woodland Point. 



Threave. 



Craighead. 



Threave ; Mulloch. 



Mulloch Hill. 



Threave. 



Drummuck. 



Craighead ; Bougang. 



Minuntion. 



Craighead ; Minuntion. 

 Aldons ; Minuntion. 

 Balclatchie. 

 Mulloch Hill. 

 Craiffhead. 



M'Coy. 



M. magna, Lesu. 

 M. matutina, Hall. 

 Macro chilina elongata, Portl. 

 Metoptoma sp. 

 Murchisonia angulata, Phil. 

 M. cancellatula, M^Coy. 

 M. elongata, Portl. 



M. (Ectomaria ?) exigua, Donald. Minuntion. 

 M. (E.) girvanensis, Donald. Minuntion. 

 M. gracilis, Hall. Minuntion. 



M. (Hormotoma) Grayana, Don. Woodland Point. 



Bougang. 

 Mulloch Hill. 

 Rough Neuk. 



Bougang ; Balclatchie. 

 Threave. 

 Drummuck. 

 Balclatchie. 



M. gyrogonia, M^Coy. 



M. obscura, Portl. 



M. pulchra, M'Coy. 



M. simplex, M'Coy. 



M. (Pleurotomaria) turrita, 



Portl 



M. vitellia, Bill. 

 Ophileta compacta, Salt. 

 0. nerine, Bill. 

 0. sp. 



Oriostoma angulatum, Linds. 

 0. discors, Soiv. 

 Platyceras cornutum, His. 

 P. (Acroculia) haliotis, Sow. 

 Platyschisma (Trochus) helicites, 



Soiv. Threave. 



Pleurotomaria alata, Wahl. Drummuck 

 P. aequilatera, Wahl. Drummuck 



Drummuck. 

 Minuntion. 

 Balclatchie ; Threave. 

 Shalloch Mill. 

 Craighead. 

 Mulloch Hill. 

 Shalloch Mill. 

 Newlands ; Camregan. 

 Threave. 



Woodland. 



C1-C5. 

 C5. 

 Dl. 

 B2. 



C5. 

 C3. 



Cl. 

 D2. 

 01. 



B2-C3. 

 B-2-C3. 

 01. 



Cl. 



C3. 



DL 



D2. 



C5. 



B2. 



C5-D1. 



Dl. 



C5. 



Co. 



B2. 



B2. 



B2. 



B2. 



Cl. 



Dl. 



B2. 



B2. 



Dl. 



Dl. 



B2. 



B2. 



B2. 



D2. 



B2-C1. 



C5. 



C5. 



Cl. 



06, 



B2. 



CL-C5. 



C3. 



B2. 



Dl. 



C3. 



D2-D3. 



05. 



05. 



C5-D2. 



05. 



