134 CALIFORNIA ACADEMY OF SCIENCES. 



Lindaker's description can easily be recognized as that of a Trinucleus, 

 approaching T. ornalus Sternb. He indicates the limb with the genial 

 angles extending into spines, also the three protuberances of the head, 

 and the trilobation of the body, with its divisions into segments, The 

 anthor also states that the fossil is often found extended or rolled into a 

 ball. 



Lindstrom (G.) Normina fossilium Siluriensium Got- 

 landise, Visby, 1867. 



This pamphlet contains a catalogue of the Silurian fossils of Gothland. 



List of fossils of the Upper Silurian formation 



of Gothland. Stockholm, 1885. 



Forteckning pa Gotland Siluriska Crustaceer. 



In Ofversigt. Kongl. Vet. Akad. Forhandlingar, 1885. No. 6, p. 37, pis. 

 12-16. 



Phacops vulgaris Salt., P. Imhricalula Aug., P. obtusa n. sp., P. down- 

 ingice Murch., P. quadrilineata Aug., P. muaheni Salt. Cheirurus speciosus 

 His., C. conformis Ang., C. himucronatus Murch., C. gotlandicus n.sp. 

 SphcErexochus scabridus Ang., .S'. latifrons Aug., S. laciniatus n. sp., S. bey- 

 richi n. sp. Youngia n. g., Y. trispinosa E. & N., Y . globiceps n. sp., Y. 

 Inermis n. sp. Deiphon forbeni Barr. Encrinurun punctains Briinn, E. 

 Icevis Aug., E. obtusus Ang. Acidaspis crenata Emm., A. barrandei Aug., 

 A. marklinl Ang., .-1. pectinata Aug., A. ( Trapelocera ) bicuspis Ang. 

 Lichas concinnus Ang., L. latifrons Aug., L. palifer n. sp., L. araneus 

 n. sp., L. ornatus Ang., L.marginatus n. sp., L. visbyensis n.sp., L. plica- 

 tus n. sp., L. triqnetrus n. sp., L. rotundifrons Aug., L. gotlandicus Ang. 

 Trochuriis salteri Fletcher, T. pusillus Ang. Harpes acuminatus n. sp. 

 Calymene tubercnlata Briinn, C. tuberculosa Dalm., C. spectabilis Aug., 

 C. loRvis n. sp., C . frontosa n. sp., C. intermedia n. sp., C. excavata n. sp., 

 C. papillata n. sp. Homalonotus knighti Konig. Phaetonides stokesi 

 Murch., P. rugolosus n. sp., P. longifrons n. sp. Cyphaspis elegantula 

 Ang., C. piaictillosa n. s^. Proetus concirmus Dalm., P. obconic^is n. sp., 

 P. distans n. sp., P. acutus n. sp., P. conspersus Ang., P. signatus n. sp., 

 P. granulatus n. sp., P. verrucosus n. sp. IllcenuH barriensis Murch., 

 /. sulcatus n. sp., /. holmi n. sp. Bronteus platyactin Aug., B. marklini 

 Ang., B. polyactin Aug., B. irradians n. sp., B. umbonatus n. sp., B. creh- 

 ristratus n. sp. Eurypterus jischeri Eichw. Pterygotus osiliensis Schm. 



Linnarsson (J. G. 0.) Om de Siluriska bildningarne 

 i Mellersta Westergotland, 1. 



In Akad. Afhandling som med tillstond af Vidtberomda Filosofiska 

 Fakulteten i TJpsala, etc., 1866, 2 pis. 



The Trilobites are grouped as follows: Phacopida^: Phacops. Cheiru- 

 ridae: Pliomera, Cyrtometopus, Sphihrexochus. Encrinuridse : Cybele. 



