LOITER PALAEOZOIC ROCKS OF HAVERFORDWEST, 



481 



cutting. The beds here are of the same nature as at Prendergast, 

 but the calcareous matter is mainly collected into nodules. The 

 general dip is northerly, and the beds which appear to dip under 

 the Sholeshook limestone are probably newer beds brought down by 

 a faulted overfold. To this part we shall refer presently. Although 

 the Sholeshook section does not assist us in determining the rela- 

 tionship of this calcareous band to the older beds, it is important as 

 containing so many fossils, and being a well-known fossil locality. 

 The following list of fossils from this place is compiled from the 

 specimens in the Jermyn-Street Museum, those collected by ourselves, 

 and those noticed by Tornquist (Ofv. af K. Y.-A. Forhandl. Stock- 

 holm, 1879, No. 2, p. 70). 



Favosites fibres us, Goldf. 

 CbaBtetes petropolitana, Pand. 

 Cystideans (cf. Mem.Greol.SurT.vol.iii.). 

 Beyrichia strangulata, Salt. 

 Agnostus trinodus, Salt. 

 Ampyx tumidus, Forbes. 

 Trinucleus seticornis. His. 



, var. Bucklandi, Barr. 



Eemopleurides longicostatus, Portl. 



radians, Barr. 



dorso-spinifer, Portl. 



Stygina latifrons, Portl. 

 niEenus Bowmanni, Salt. 

 Lichas laxatiis, M'Coy. 

 Calymene fatua, Salt., MS. 

 Cypbaspis megalops, M' Coy. 

 PhiUipsia parabola, Barr. 



Cybele verrucosa, Balm, 



Loveni, Linnrs. 



Encrinurus sexcostatus. Salt. 

 Cheirurus bimucronatus, Miirch. 



octolobatus, M'Coy. 



juvenis, Salt. 



Spbserexochus boops, Salt. 



angustifrons, Ang. 



Phacops aratus, Salt., MS. 



Brongniarti, Bortl. 



Glauconome, n. sp. 

 Leptsena sericea, Sow. 



tenuicincta, M'Goy. 



. Orthis testudinaria, Balm. 



calligramma. Balm. 



Cyrtoceras sonax, Salt. 

 Trochoceras cornu-arietis, Sow. 



At the schoolhouse north of Pelcomb Cross (3 miles north-west of 

 Haverfordwest), the Orthis-argentea shales are seen by a small 

 stream to the west of the road, dipping in a southerly direction. 

 South of this, a quarry by the roadside contains beds apparently 

 overlying the Orthis-argentea shales. These consist of crushed calca- 

 reous shales of a greenish colour, quite like those of Sholeshook and 

 Prendergast. There is room between the Orthis-a^yentea shales and 

 the quarry for the Robeston Wathen limestone, but no exposure is 

 seen. This quarry is probably the place from which Prof. Phillips 

 obtained the fossils mentioned in ' Memoirs of the Geological Survey,' 

 vol. ii. pp. 235 et seq. The following occur here : — 

 Agnostiis trinodus, Salt. 

 Ampyx tumidus, Forbes. 

 Cybele Loveni, Linnrs. 

 Encrinurus sexcostatus, Salt. 

 lUsenus (young). 

 Cheirurus bimucronatus, Murch. 



These beds can be traced to the north of West Pelcomb, where 

 similar fossils are found, and Trinucleus Bucklandi is specially 

 abundant, and well preserved. Cheirurus juvenis also occurred here. 



On the north side of the complex synclinal, calcareous beds are 

 seen by the platform on the south side of Clarbeston-Eoad Station, 

 where Trinucleus BucJclancli is found in plenty with : — 



Phacops Brongniarti, Portl. I Leptaena tenuicincta, M'Coy. 



Homalonotus ? 



Staurocephalus globiceps, Portl. 

 Phacops Brongniarti, Portl. 

 Phillipsia parabola, Barr. 

 Trinucleus seticornis, var. BucMandi, 

 Barr. 



