ANNIVERSARY ADDRESS OF THE PRESIDENT. 



173 



Ludlow beds strictly belongs to them or is confined to the Ludlow ; 

 all have previously occurred in the Wenloek. 17 species are Lower 

 Ludlow; 8 of the same occur in the Aymestry Limestone, and 

 7 in the Upper Ludlow, chiefly the Favosites (5 species) : 13 species 

 occur in Shropshire, 6 in Westmoreland, and 12 in Worcestershire. 

 Monticulipora papillata is the only Scotch species known. 6 species 

 occur in Ireland (Favosites asper, F. cristatus, F. Jibrosus, Alveolites 

 LabecMi, Cyathopkyllum truncatum, and Monticulipora papillata) ; 

 only 1 species is known in North Wales (Heliolites tubulatus) ; and 

 6 genera and 9 species in South Wales. The accompanying Table, 

 showing their geographical distribution, will be clearer than descrip- 

 tion, where the species are so irregularly distributed. 









as 



Oj" 













j 







& 







Ludlow Species. 



ft P 



+2 -t 



opshire 



rcesters 



■efordsh 



stmorel 



tland. 



and. 





Sou 



AT™ 





Wo 



w 



CD 





 



Ul 



CD 

 £h 

 M 



Alveolites Labechii 















* 



Coenites intertextus 





* 













Cyathaxonia siluriensis 











tt 







Cyathophylluin truncatum 















■Se- 

















tt 













■Se- 





tt 









* 





tt 





tt 





* 















Forbesii. 

















Fistulipora decipiens. 



























tt 







Heliolites interstinctus 







* 



•Se- 















•if 



tt 

















tt 





tt 









■Se- 











* 







tt 



* 

 # 











serpens 







9 " 



L 13 



12 



7 



6 



1 



6 



E chin derm at a . — This group in the Ludlow comprises 12 genera 

 and 21 species. There are 3 genera and 4 species of Crinoidea 

 (Actinocrinus pulcher, Iclithyocrinus pyriformis, I. JSP Coy anus, and 

 Taxocrinus oV Orbignyi). Of the remaining 17 species 4 are Cys- 

 tideans (Eehinocystites pomum, E. uva, Pseudocrinites magnijims, 

 and P. quadrifasciatus), all Lower Ludlow; and 13 Asteroidea. 

 2 species of Palceaster (P. Ruthveni and P. liirudo) and Palce- 

 asterina primceva, with Protaster SedgwicMi, occur in the Upper 

 Ludlow of Kendal, Westmoreland. 4 Palceocomce (P. Colvini, P. 

 cygnipes, P. Marstoni, P. vermiformis) are all Lower Ludlow from 

 the Leintwardine beds near Ludlow. Palceodiscus ferox, Protaster 

 leptosoma, P. Miltoni, and P. JSedgivicJcii are from the same horizon 

 and locality, as well as Wwphalocoma pyrotechnica — Shropshire thus 



