274 PAXJEOJ^TOLOGT. 



Desor, Prof. E. [Silurian Fossils, Gothland.] Bull. Soc. Set. Nat. 



Neuchdtel, t. x. cah. 3, pp. 241-244. 

 List of 21 sp. from Wenlock Limestone, notable for their perfection. 



Dnmortier, E., and F. Fontannes. Description des Ammonites de 

 la Zone a Ammonites tenuilohatus de Crussol (Ardeche), et de 

 quelques autres Possiles Jurassiques nouveaux ou pen connns. 

 [The Ammonites of the A. tenuilohatus zone of Crussol, and some 

 other new or imperfectly known Jurassic Fossils.] Mem. Ac. Lyon., 

 t. xxi. pp. 159 ; 19 plates. [Title entered by mistake in Geolo- 

 gical Becord for 1875, p. 386.] 

 28 new species of Ammonites are described, all but 2 being from the 

 Amm. tenuilohatus zone, besides 6 species of Gasteropods and Lamelli- 

 branchs from other beds (see Index of Species). M. Fontannes adds 

 some considerations on the Ammonites of the zone. H. A. jN". 



Duncan, Prof. P. M. On some Fossil Eeef-building Corals from the 

 Tertiary Deposits of Tasmania. Quart. Journ. Geol. Soc. vol. 

 xxxii. pp, 341-351, pi. xxii. 

 Describes as new species Heliastrcea Tasmaniensis and Thamnastra^a 

 sera, from Miocene, Table Cape. The existence of reefs around Tas- 

 mania in bygone periods where their absence is now so conspicuous 

 may be explained by former suggestions, that the Heliastrcea was a 

 rapid grower, and both it and the Thamnastr<xa were true reef-building 

 forms. They required the external conditions peculiar to coral reefs. 



R. E., Jun. 



Etheridge, R. Appendix A. — Description of New Fossils occurring 



in the Arenig or Skiddaw Slates. Pp. 108-112 of J. C. Ward's 



Memoir on the Lake District, see p. 38. 



The following new species are described — Stella-scolites (n. gen.) 



radiatus, JViohe Doveri, ^glina hinodosa, Asajphus sp., Cyhele ovata. 



Etheridge, R., Jun. On the Occurrence of the Genus Astrocrinites 



(Austin) in the Scotch Carboniferous Limestone Series ; with the 



Description of a new Species {A. ? Benniei) and Remarks on the 



Genus. Quart. Journ. Geol. Soc. vol. xxxii. pp. 103-114, pis. xi., xii. 



Quotes the definition given by Messrs. Austin of the genus Astrocrinites., 



and description of the species^, tetragonus, and gives reasons for retaining 



their generic title. Describes in detail the structure of a singular species 



of Echinoderm from the Carboniferous Limestone of Scotland, referred to 



Astrocrinites with doubt, from the fact that the specimens do not show the 



structure described in A. tetragonus as a " madreporiform tubercle." 



The Scotch form is termed A. ? Benniei. Concludes that Astrocrinites 



is an aberrant member of the Blastoidea. H. A. N. 



. On an Adherent Form of Productus and a small Sjnriferina 



from the Lower Carboniferous Limestone Group of the East of 

 Scotland. Quart. Journ. Geol. Soc. vol. xxxii. pp. 454-456, pis. 

 xxiv., XXV. 



Notices the views of previous observers as to the habits and mode of 



