252 CALIFORNIA ACADEMY OF SCIENCES. 



Quadersaiidstein, jenaischen bunten Sandstein und 

 bohmischen Uebergangsgebirge, mit 6 illuminirten Kup- 

 fertafeln. Jena, 1833. 



Olenus loiKjicaudulus n. sp., 0. pyramidalis u. sp., . laius n. sp. Ota- 

 rion n. g., 0. diffraclum n. sp., 0.? squarrosum n. s-p. Conocephalus n. 

 g., C. costatus n. sp. Ellipsocephalus n. g., E. amhiguus u. sp. 



The genus Otarion was made up from the head of Ci/phaspis burmeisieri 

 Barr., connected with the pygidium of Cromus beaumonti Barr. The 

 second species, described as Otarion? squarrosum, is referred by Barrande 

 to Cheirurus quenstedli. 



Zenker uses two generic names for his new genus Conocej^halus, the first 

 on p. 48 in describing the genus and the second in his description of plate 

 5, where he calls it Tr'Hjonocej)halus. 



Both these generic terms had been used in natural history for other 

 genera, the first by Thurnburg in 1812 foi- a genus of the Orthoptera, and 

 the second by Oppel in ISU for the Reptiles, 



The typical species described as Conocephalus costatus on p. 49, and also 

 in the explanation of pi. 5, tigs. G-K, p. 51, as Trigonocephalus costatus 

 has been referred by Barrande to an amended genus, Conocephalites (Zenker) 

 Barr., and the species to the older name of sulzeri. The other new genus, 

 Ellipsocephalus, has been used by all subsequent authors, the sjiecies tak- 

 ing the older name of Ellipsocephalus hoji Schloth. 



Zeno (Franz). Von Seeversteinerungen und Fos- 

 silien, welche bei Prag zu finden sind. 



In Neuephys. Belustigungeu, etc., vol. I, 1770, p. 65. Continued same 

 vol., p. 362, pi. 1, fig. 1. 



Under the names of Cacada or Ki'ifermuschel Zeno describes the pygidium 

 of Dalmanites hausmanni and the head of Phacops latifrons Bronn. 



Zittel (Karl A.) Handbuch der Palseontologie. 

 Miinchen und Leipzig, 1881-85. 



The Crustacean are described in I, Band. II, Abtheiluug. Ill, Lief- 

 erung, 1885. 



The class is arranged in the following order: 



A. Entomostraca. 1, Cirripedia. 2, Copepoda. 3, Ostracoda. 4, 

 Phyllopoda. 5, Trilobitae. 



B. Merostomata. 6, Xiphosura. 7, Gigantostraca. 



0. Malaeostraca. 8, Phyllocarida. 9, Isopoda. 10, Amphipoda. 11, 

 Stomatopoda. 12, Cumacea. 13, Schizopoda. 14, Decapoda. 



The author gives a diagonis of each genus, with numerous illustrations; 

 also, tabulated stratigraphic distribution of the genera. 



Zippe (F. X.) See Sternberg (Kasper Graf von). 



