THE GEOLOGICAL AGE OF CENTRAL ANt) WEST CORNWALL. 173 



2. Retepora infundihiila [Lonsdale) — Fenestella infundihda (Shrub- 



sole.) Fowey, Pridmoiith, Gribbeii ; (Peach 1844, 

 Couch 1846.) Miirchisonmentions it from the Wenlock. 

 Mr. Shrubsole does not appear to have seen the Cornish 

 specimen. 



3. Protovirgularia dichotoma. " Van, near the Blackhead, in an 



old slate quarry (nearly limestone) associated with 

 Petraia celtica,^^ according to Peach, Trans. E.G-.S.C, 

 X, 93. Murchison calls it a Llandeilo species ! 



ECHINODERMATA. 



1. Platycrmus sp. Crinnis, &c., Peach 1844. East Looe, 



McCoy. Platycrimis retiarius is recorded by Murchison 

 from the Wenlock {Sil. 5th Ed. p. 223). The genus is 

 common in the Carh. Limestone, where it was worked 

 out by De Koninck. 



2. Actinocrinus liQ dactyhis? Gribben, Peach 1844. The species 



is both Carhoniferous and Devonian. The Gribben 

 specimen is probably wrongly named. 



3. Periechocrinus moniliformis ? [Actinoc. mon.) Crinnis. Fine 



specimen, supposed to be this species, found by T. Clark 

 and J. H. Collins, and now in the Truro Museum. 

 P. man. is a very common Dudley fossil (WenlochJ. 



4. Cyathocrimis planus. Crinnis, &c., Peach 1844. The genus 



ranges from Bala limestone to Carh. limestone. 



5. C. pimiatus, from Fowey, is, according to McCoy, in Museum 



Poy. Geol. Soc. Corn., Penzance. 



6. Sphceronites tesselatus, Peach 1846, Punch's Cross ; specimen 



in Museum at Penzance. 



7. Echinoidea. Many excellent specimens occur at Highgate 



Quarry and other places in St. Veep. There is a fair 

 collection of these in the Museum of the Eoy. Inst. 

 Corn., but we believe that none have yet been deter- 

 mined. 



ANNELIDA. 



Worm-tracks. Highgate Quarry, St. Veep ; Peach, Tra7is. 

 li'.G.S.Cix. 52. 



