206 CALIFORNIA ACADEMY OF SCIENCES. 



4. Paradoxldes. 1, P. tessini Brong. 2, P. spinulosus Brong. 3, P. 

 ijibbosus Wahl. 4, P. bucephalus Wahl. 



5. Agnosius. 1, A. pisiformia Linne. 



1, Tril. (Calymene) sulzeri Schloth. 2, Tril. (Calymene) hoffi Schloth. 

 3, Tril. prohlematicus Schloth. 4, Tril. cassicauda Wahl. 5, Tril. bitu- 

 minosus Schloth. 6, Tril. gracilis Boeck. 7, Tril. conophthalmus S. & B. 

 8, Tril. schlotheimii Broun. 9, Tril. catenatus u. sp. 10, Tril. esmarkii 

 Schloth. 11, Tril.velatus Schloth. 12, Tril. borealis n. sp. 13, Tril. 

 bmschst. von. Tril. aus Eeval. 14, Tril. sp.? 15, Tril. sternbergii Boeck. 



Schmid (E. E.) Die kleineren organischea Formeii 

 des Zechsteiiikalkes von Selters in der Wetterau. 



In Neues Jahrbuch fiir Mineral., 1867,^^576, pi. 

 The author gives a brief notice of the following species: 

 Cythere {Cytherella) nuciformis Jones, C. pyrrhce Eichw., C. elongata 

 Geinitz, C. morrisiana Jones, C. (Bairdia) mucronata Reuss, C. {Bairdia) 

 rhomboidea Kirkby, C. (Cytherella) tyronica Jones, C. richieriana Jones, C. 

 kutorgana and C. {Bairdia) subreni/ormis Kirkby, C. (Bairdia) frumentum 

 Keuss, C. (Bairdia) plebeja, pi. 6, figs. 1-45, Eeuss, C. (Bairdia) brevicauda 

 Jones, C. (Cytherella) inornata, C. (Bairdia) kingi Keuss, C. (Bairdia) 

 acuta Jones, C. (Bairdia) ampla Keuss. 



Schmidt (Fr.) Untersuchungen liber die silurische 

 Formation von Ehstland, Nord-Livland und Oesei. 



In Archiv Naturk. Liv-, Ehst- u. Kurl., Dorpat, vol. 2, 1858-59, pp. 

 443, 445, 448, 453, 461, 463.* 



Miscellanse Silurica. I. Ueber die russischen 



silurischen Leperditien mit Hinzuziehung einiger Arten 

 aus den Nachbarlandern. 



In Mem. Acad. Imp. Sci. St. Petersburg, vol. 21, No. 2, 1873, 1 pi. 



Leperditia grandis Schrenk, L. barbotana n. sp., L. tyraica n. sp., L. 

 angelini n. sp., L. balthica His., L. hisingeri n. sp., L. eichivaldi n. sp., L. 

 wiluiensis n. sp., L. parallela n. sp., L. marginata Keys., L. keyserlingi 

 n.sp. Isochilina biensis Griinew, /. punctata Eichw., /. maakii n. sp. 



Einige Bemerkungen iiber die podolisch-gali- 



zische Silurformation und deren Petrefacten. St. 

 Petersburg, 1875, 1 pi. 



Eurypterus Jischeri Eichw. (E. tetragonophthalmus Fischer). Encrinurus 

 punctatus Brllnn, E. obtusus Ang. Illcenus (Bumastus) barriensis Murch. 

 Calymene blumenbachii Brong. Phacops caudatus Briinn, P. doioningiai 

 Murch. Proetusconcinna'D&i'm. Cyphaspis elegantulusjjoxen. Pterygotus 

 anglicus Agas. The author illustrates Phacops downingice and Illcenus 

 (Bumnstus) barriensis. 



