54 Mr. C. Lapworth on the Geological 



and from the overlying Stygfors Schists 



Diplograptus folium, His. Monograptus convolutus, His. 



Monograptus priodon, Bronn. turriculatus, Barr. 



proteus, Barr. Retiolites Geinitzianus, Barr. 



In the collection sent me by Dr. Lindstrom I also recog- 

 nized 



Monograptus Halli, Barr. Monograptus leptotheca, Lapio. 



from the Stygfors Schists. 



The Lobtfer us- Schists occur also in the island of Born- 

 holm, where they afford the same general assemblage of 

 Rhabdophora. 



Thuringia.- — Thanks to the industrious researches of Prof. 

 Geinitz and Dr. B. Richter, the Llandovery strata of Saxony 

 and Thuringia have long been famous for their numerous 

 Graptolitidae. The true Llandovery age of the containing 

 beds has been generally admitted from the first. As a whole 

 the fauna of the so-called Kiesel- Scliiefer and Alaun- Schiefer 

 of this region is essentially Birkhillian ; but, judging from 

 the collective fauna, it is clear that strata of Gala or Taran- 

 non age are also present. The group, as a whole, corresponds, 

 both in mineral character and fossils, with Barrande's colonial 

 zone and the lower portion of his zone Eel. 



From the Saxon localities Geinitz figures the following 

 species * : — 



Diplograptus folium, His. Monograptus Halli, Barr. 



palmeus, Barr. lobiferus, M' Coy. 



physophora?, Nich. (i. fig. 21). Sedgwicki, Portl. 



Oephalograptus cometa, Geinitz. spiralis, Geinitz. 



Dimorphograptus Swanstoni, Lapio. proteus ?, Barr. 



(i. 25). involutus, Lapio. (iv. 9). 



Climacograptus rectangularis, triangulatus, Harkn. (v. 6). 



M'Coy. Nilssoni?, Barr. (ii. 18). 



Diplograptus vesiculosus, Nich. (i. Rastrites peregrinus, Barr. 



22, 20). capillaris, Can: (iv. 19). 



Monograptus Hisingeri, Cart: hybridus, Lapw. (v. 17). 



tenuis, Portl. Linnaai, Barr. 



gregarius, Lapw. (ii. 25). 



The following Gala-Wenlock forms are also figured by 

 Geinitz, but do not appear to occur in association with the 

 foregoing, being found at Grafenwarth and Linda only : — 



Monograptus priodon, Bronn. Monograptus colonus, Barr. 

 bohemicus F, Barr. Retiolites Geinitzianus, Barr. 



The whole of the forms enumerated by Geinitz have been 

 subsequently noticed by Dr. Richter in his most valuable 



* Geinitz, Die Graptolithen, pis. i.-vi. 



