INVERTEBRATA. 309 



Insists that to merge the Gryphcece, which indicate the Jurassic ages, 

 and the Exogyrce which denote the supra-Jurassic rocks, into the genus 

 Ostrea would be very unfortunate for geologists, without contesting 

 the correctness of the connexion established by conchologists. G. A. L. 



LiNPSTROif, G. Forteckning pS, siluriska koraller fran Jemtland, 

 samlade af Dr. G. Linnarsson. [Silurian corals from Jemtland.] 

 Geol. fdren. Stockholm Forhandl. bdt. i. pp. 90-93. 



Six species of Tabulate corals, and 3 of Rugose are named. 



Linnarsson, G. Forsteningar frSn Lappland, insamlade af Hrr. E. 



Sidenbladh och E. Erdmann. [Fossils from Lapland.] Geol. 



fdren. Stockholm Forhandl. bdt. ii. pp. 129-131. 



The species recognized were Ceratopyge forjicula, Euhriia onia- 



turuj SympJiysurus socialis, Agnostus Sidenhladhi, A. punctuosus, and 



A.fallacc. G. A. L. 



. Trilobiter frSn Westergotlands " Andrarumskalk." [Trilo- 



bites from the " Andrarum limestone " of W. Gothland.] Geol. 

 foren. Stockholm Forhandl. bdt. i. pp. 242-248. G. A. L. 



9 species are named. 



LoRioL, P. DE, and E. Pellat. Monographic geologique et paleon- 



tologique des etages superieurs de la Formation Jurassique de 



Boulogne-sur-mer. I. Partie. Mollusques, Cephalopodes, et Gas- 



tropodes. [Geological and Paloeontological Monograph of the 



^ upper stages of the Jurassic formation of Boulogne-sur-mer 



Part I. Cephalopoda and Gasteropoda.] Mem. Soc. Phys. et Hist. 



Nat. Geneve, vol. xxiii. pp. 155, with ten plates of fossils. 



Describes the Cephalopoda and Gasteropoda of the Jurassic deposits 



of Boulogne, and some remains of Serpula and Pollidpes. 



LiTNDGREN, B. Cm su Comastev och en Aptychus frSn Kdpinge. [A 

 Comaster and an Aptychus from Koijinge, Scania.] Ofversigt 

 K. S. Vet. Akad. Forhandl. No. 3. 



LUtken, Chas. Description du Cladangia exusta, espece modeme 

 d'un genre de coraux connu jusque'ici seulement comme fpssile 

 miocene. [Description of a recent species of Cladangia^ a genus 

 hitherto only known fossil.] Journ. Zool. vol. iii. pp. 321-324. 

 The specimen was probably from the Indian Ocean, and belongs to 

 a genus known hitherto only in the Miocene. It is specifically distinct 

 from Cladangia semuphcfrica^ Defr., and CI. conferta^ licuss, and is 

 called 67. exusta. In the young condition it has no cocnenchyma join- 

 ing the corallites, and in this condition is believed to represent the 

 genus lihizangia, E. T. N. 



Ltcett, John. Monograph of the British Fossil Trigontce. No. II. 



pp. 53-92 ; plates x.~xix. PaloDont. Soc. 

 Continues liis description and figures of the British THgonice. 

 Twenty-six species are described, of which the following are new — 



