Lower Palaeozoic Crinoids of Bohemia. 1 1 1 



Vletavicrinus is not the same as Bohemicocrinus, even if 

 V. Haueri be not a synonym of B. pulvereus itself. 



The last of the alleged new genera from the black lime- 

 stone, e 1-2, is based on an ill-preserved cup from Dvorce, 

 and is now called Zenker icrinus melocrinoides. It is the 

 Xenocrinus mentioned by name only on p. 416 of Dr. Jahn's 

 " Beitrage zur Stratigraphie und Tektonik der mittelbohm- 

 ischen Silurformation " *. The authors refer it to the Melo- 

 crinidae, to which family, even in its latest and most restricted 

 sense, it certainly belongs. They say that " it is nearest to 

 Melocrinus, from which, however, it differs in many essential 

 features." This opinion also is well founded ; but the authors 

 eeem unaware that the genus Mariacrinus, Hall, is distin- 

 guished from Melocrinus by those same features. There is 

 nothing to prevent the relegation of the present specimen to 

 Mariacrinus. 



Fig. 5. — Caleidocrinus multiramus. Proximal portions of stem and 

 crown, seen from alleged right posterior radius ; the supple- 

 mentary plates of the alleged posterior interradius are in two 

 vertical rows, those of the other are in a single row. This is 

 fig. 28 a of Waagen and J aim, and is said to be " grossi " ; but 

 not a single measurement is given throughout the account of 

 this genus. The block has been kindly lent by Dr. Anton 

 Fritsch, on behalf of the Barraude Committee. 



In the second fauna the only representative of the (Jrinoidea 

 is a new genus, Caleidocrinus, based on impressions in the 

 " schistts de grauwacke," d.4, of Haj Hill, near Zahoran. 



* Jahrb. d. k. k. geol. Reichsanst. Wien, xlii. pp. 397-462, Feb. 1893 

 {not 1892). 



